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1.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-38697283

RESUMO

INTRODUCTION AND OBJECTIVES: The multiparametric implantable cardioverter-defibrillator HeartLogic index has proven to be a sensitive and timely predictor of impending heart failure (HF) decompensation. We evaluated the impact of a standardized follow-up protocol implemented by nursing staff and based on remote management of alerts. METHODS: The algorithm was activated in HF patients at 19 Spanish centers. Transmitted data were analyzed remotely, and patients were contacted by telephone if alerts were issued. Clinical actions were implemented remotely or through outpatient visits. The primary endpoint consisted of HF hospitalizations or death. Secondary endpoints were HF outpatient visits. We compared the 12-month periods before and after the adoption of the protocol. RESULTS: We analyzed 392 patients (aged 69±10 years, 76% male, 50% ischemic cardiomyopathy) with implantable cardioverter-defibrillators (20%) or cardiac resynchronization therapy defibrillators (80%). The primary endpoint occurred 151 times in 86 (22%) patients during the 12 months before the adoption of the protocol, and 69 times in 45 (11%) patients (P<.001) during the 12 months after its adoption. The mean number of hospitalizations per patient was 0.39±0.89 pre- and 0.18±0.57 postadoption (P<.001). There were 185 outpatient visits for HF in 96 (24%) patients before adoption and 64 in 48 (12%) patients after adoption (P<.001). The mean number of visits per patient was 0.47±1.11 pre- and 0.16±0.51 postadoption (P<.001). CONCLUSIONS: A standardized follow-up protocol based on remote management of HeartLogic alerts enabled effective remote management of HF patients. After its adoption, we observed a significant reduction in HF hospitalizations and outpatient visits.

2.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-38701881

RESUMO

INTRODUCTION AND OBJECTIVES: Cardiac resynchronization therapy (CRT) is an effective treatment for patients with nonischemic dilated cardiomyopathy associated with left bundle branch block (LBBB). In these patients, the device can normalize left ventricular ejection fraction (LVEF). Nevertheless, it remains unclear whether CRT responders still require neurohormonal blockers. The aim of this study is to determine the long-term safety of withdrawing drug therapy in these patients. METHODS: The REMOVE trial is a prospective, multicenter, open-label and randomized 1:1 study designed to assess the effect of withdrawing neurohormonal blockers in patients with nonischemic dilated cardiomyopathy associated with left bundle branch block who recovered LVEF after CRT. The study will include a 12-month follow-up with the option to continue into the follow-up extension phase for up to 24 months. The primary endpoint is the recurrence of cardiomyopathy defined as any of the following criteria: a) a reduction in LVEF >10% (provided the LVEF is <50%); b) a reduction in LVEF >10% accompanied by an increase >15% in the indexed end-systolic volume relative to the previous value and in a range higher than the normal values, or c) decompensated heart failure requiring intravenous diuretic administration. In patients meeting the primary endpoint, drug therapy will be restarted. CONCLUSIONS: The results of this study will help to enhance our understanding of CRT superresponders, a specific group of patients. Registred at ClinicalTrials.gov (Identifier: NCT05151861).

3.
Rev. chil. cardiol ; 43(1)abr. 2024.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1559641

RESUMO

Introducción: La presencia de una vena cava superior izquierda persistente, durante el implante de electrodos endocavitarios para la resincronización cardíaca, representa una anomalía poco habitual de gran relevancia, que puede presentarse de forma inesperada durante el abordaje venoso superior habitual. Planteando desafíos técnicos en su implante y dudas sobre su eficacia o seguridad a corto y largo plazo; existiendo aislados casos publicados. Caso clínico: Presentamos un caso complejo con esta inusual anomalía llevado a implante de este dispositivo de forma exitosa, con funcionamiento normal durante su seguimiento de 7 años, llevado posteriormente a cambio de generador. Conclusiones: La vena cava superior izquierda persistente es la anomalía del retorno venoso cardiaco más frecuente, aunque su prevalencia es baja, presenta una gran relevancia en el implante y posicionamiento de electrodos endocavitarios necesarios para la terapia de resincronización cardiaca. Existe una evidencia creciente sobre su factibilidad y seguridad a corto y largo plazo a pesar de sus dificultades técnicas asociadas.


Introduction: The presence of a persistent left superior vena cava, during the implantation of endocavitary electrodes for cardiac resynchronization, represents an unusual anomaly of great relevance, which can occur unexpectedly during the usual superior venous approach. It constitutes a technical challenge in your implant and doubts about its effectiveness or safety in the short and long term. There are isolated published cases. We present a complex case with this unusual anomaly that led to successful implantation of this device, with a normal functio during its 7-year follow-up It was followed by uneventul generator change. Conclusions: Persistent left superior vena cava is the most common cardiac venous return anomaly. Although its prevalence is low, it is of great relevance in the implantation and positioning of endocavitary electrodes necessary for cardiac resynchronization therapy. There is growing evidence about its feasibility and safety in the short and long term despite.

4.
Rev. esp. cardiol. (Ed. impr.) ; 77(3): 243-253, mar. 2024. graf, tab
Artigo em Espanhol | IBECS | ID: ibc-231061

RESUMO

Introducción y objetivos La monitorización a distancia (MD) de los dispositivos cardiacos implantables (DCI) se considera más fiable, eficiente y segura que los convencionales seguimientos presenciales, aunque su implantación es aún subóptima. Este estudio pretende analizar el impacto de la pandemia de COVID-19 en las tasas de implantes y activaciones de MD de DCI en España. Métodos Se utilizó el Registro COVID-19 de MD en España para analizar el número mensual de todos los implantes de DCI y activaciones de MD desde enero de 2018 hasta diciembre de 2021 en España. Se sumaron los datos de los 5 principales fabricantes de DCI y se analizaron de manera descriptiva. Resultados Se registró un total de 205.345 DCI. El número de implantes disminuyó bruscamente (48,2%) con el confinamiento (marzo a junio de 2020) y aumentó progresivamente después hasta compensar la reducción previa, excepto en marcapasos y desfibriladores automáticos implantables (DAI), con una pérdida agregada (2020-2021) del 7 y el 3%, respectivamente, respecto a la media anual. Aumentaron la terapia de resincronización cardiaca con desfibrilador (TRC-D, 17%) y con marcapasos (TRC-P, 4,5%) a los 2 años. El porcentaje de activaciones de MD aumentó del 24,5% en 2018 al 49,0% en 2021, con un fuerte aumento durante el confinamiento. Las tasas de activación de MD aumentaron invariablemente durante el confinamiento con todos los dispositivos: marcapasos (el 14,4 frente al 37,2%; p<0,001); DAI (el 75,6 frente al 94,2%; p<0,001); TRC-D/TRC-P (del 68,6/44,2% al 81,6/61%; p<0,001), y Holters implantables (el 50,2 frente al 68,7%; p<0,001). Conclusiones La significativa reducción de los implantes que se produjo durante el confinamiento se recuperó gradualmente después, excepto los de marcapasos y DAI. La pandemia de COVID-19 impulsó la MD de todos los DCI en España. (AU)


Introduction and objectives Remote monitoring (RM) of cardiac implantable electronic devices (CIEDs) is considered more reliable, efficient, and safer than conventional in-person follow-up. However, the implementation of RM is still suboptimal. This study aimed to analyze the impact of the COVID-19 pandemic on the rates of CIED implants and RM activations in Spain. Methods The COVID-19 RM Spain Registry was used to analyze the monthly number of all CIED implantations and RM activations from January 2018 to December 2021. A descriptive analysis was performed using aggregated data from the five major CIED manufacturers. Results A total of 205 345 CIEDs were recorded. The number of implants decreased sharply (48.2%) during the pandemic lockdown (March-June 2020) but gradually increased thereafter, compensating for the previous reduction. However, pacemakers and implantable cardiac defibrillators (ICD) showed an aggregate loss of 7% and 3%, respectively, from the annual average during 2020-2021. In contrast, cardiac resynchronization therapy defibrillators (CRT-D) increased by 17%, and pacemakers (CRT-P) by 4.5% over the 2-year period. The percentage of RM activations increased from 24.5% in 2018 to 49.0% in 2021, with a sharp increase during the lockdown. The RM activation rates consistently increased during the lockdown for all devices: pacemakers (14.4% vs 37.2%; P<.001); ICD (75.6% vs 94.2%; P<.001); CRT-D/CRT-P (68.6-44.2% vs 81.6-61%; P<.001), and implantable loop recorders (50.2% vs 68.7%; P<.001). Conclusions The significant decline in implants during the lockdown gradually recovered, except for pacemakers and ICD. However, the COVID-19 pandemic boosted RM for all CIEDs in Spain. (AU)


Assuntos
Humanos , Marca-Passo Artificial , Desfibriladores Implantáveis , Próteses e Implantes , /epidemiologia , Espanha , Pacientes
5.
Arch Cardiol Mex ; 94(1): 15-24, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38507305

RESUMO

BACKGROUND: Cardiac resynchronization therapy (CRT) has been established as an effective therapy for heart failure with reduced ejection fraction. Randomized clinical trials have shown its impact on mortality and HF hospitalizations, as well as improvement of symptoms and quality of life. OBJECTIVES: Finding clinical, electrocardiographic, and echocardiographic variables that may predict the response to cardiac resynchronization therapy (CRT). METHODS: We performed a single-center, observational, analytic, and retrospective study that included 102 patients with heart failure (HF) diagnosis who underwent CRT according to guideline-directed therapy from January 2010 to April 2020 in a third-level center. CRT response was defined as an improvement of New York Heart Association functional class in at least 1 category associated with a recovery of ≥ 5% in the left ventricular ejection fraction (LVEF). RESULTS: Our study population was 102 patients of which 61 (59.8%) were men. The mean age at HF diagnosis was 54 ± 18.7 years. Ischemic heart disease was the etiology in 37 (36.3%) cases. Fifty-one (50%) patients were classified as responders. Responders had wider QRS, and lower LVEF and right ventricular fractional area change at baseline. After CRT, responders had a greater reduction of QRS duration, and improvement in LVEF, global longitudinal strain, and echocardiographic dyssynchrony parameters. Multivariate regression analysis showed that left bundle branch block (LBBB), left ventricular end-diastolic volume (LVEDV), tricuspid annular plane systolic excursion (TAPSE), and baseline difference of pre-ejection periods were predictors of a positive response to CRT in this population. CONCLUSIONS: LBBB, TAPSE, LVEDV, and pre-ejection time difference are independent variables that can predict adequate response to CRT.


ANTECEDENTES: La terapia de resincronización cardíaca (TRC) se ha establecido como una terapia efectiva para la insuficiencia cardíaca con fracción de eyección reducida. Ensayos clínicos aleatorizados han demostrado su impacto en la mortalidad y hospitalizaciones por insuficiencia cardíaca, así como la mejora de los síntomas y la calidad de vida. OBJETIVOS: Determinar las variables clínicas, electrocardiográficas y ecocardiográficas que puedan predecir la respuesta a la terapia de resincronización cardíaca (TRC). MÉTODO: Estudio unicéntrico, observacional, analítico, retrospectivo, que incluyó 102 pacientes con diagnóstico de IC sometidos a TRC y terapia dirigida por guías, de enero de 2010 a abril de 2020, en un centro de tercer nivel. La respuesta a TRC fue definida como mejoría de la clase funcional de la New York Heart Association en al menos 1 categoría, asociado con una recuperación ≥ 5% en la fracción de expulsión del ventrículo izquierdo (FEVI). RESULTADOS: Incluimos a 102 pacientes, 61 (59.8%) fueron hombres. El promedio de edad al diagnóstico de IC fue 54 ± 18.7 años. La cardiopatía isquémica fue la etiología en 37 (36.3%) pacientes. 51 (50%) pacientes, fueron clasificados como respondedores. Los respondedores presentaron QRS amplio, menor FEVI y menor fracción de acortamiento del ventrículo derecho al inicio del estudio. Después de la TRC, los respondedores tuvieron una mayor reducción en la duración del QRS, mejoría en la FEVI, strain longitudinal global y parámetros de disincronía ecocardiográfica. El análisis de regresión multivariado mostró que el bloqueo de rama izquierdo (BRI), el volumen telediastólico del ventrículo izquierdo (VTDVI) la excursión sistólica del plano anular tricuspídeo (TAPSE) y la diferencia basal del período expulsivo fueron predictores de respuesta positiva a TRC. CONCLUSIONES: BRI, TAPSE, VTDVI y la diferencia basal de períodos preexpulsivos son variables independientes que predicen respuesta adecuada a TRC.


Assuntos
Terapia de Ressincronização Cardíaca , Insuficiência Cardíaca , Masculino , Humanos , Adulto , Pessoa de Meia-Idade , Idoso , Feminino , Volume Sistólico/fisiologia , Estudos Retrospectivos , Qualidade de Vida , Resultado do Tratamento , Função Ventricular Esquerda , Bloqueio de Ramo/terapia
6.
Arch. cardiol. Méx ; 94(1): 15-24, ene.-mar. 2024. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1556888

RESUMO

Abstract Background: Cardiac resynchronization therapy (CRT) has been established as an effective therapy for heart failure with reduced ejection fraction. Randomized clinical trials have shown its impact on mortality and HF hospitalizations, as well as improvement of symptoms and quality of life. Objectives: Finding clinical, electrocardiographic, and echocardiographic variables that may predict the response to cardiac resynchronization therapy (CRT). Methods: We performed a single-center, observational, analytic, and retrospective study that included 102 patients with heart failure (HF) diagnosis who underwent CRT according to guideline-directed therapy from January 2010 to April 2020 in a third-level center. CRT response was defined as an improvement of New York Heart Association functional class in at least 1 category associated with a recovery of ≥ 5% in the left ventricular ejection fraction (LVEF). Results: Our study population was 102 patients of which 61 (59.8%) were men. The mean age at HF diagnosis was 54 ± 18.7 years. Ischemic heart disease was the etiology in 37 (36.3%) cases. Fifty-one (50%) patients were classified as responders. Responders had wider QRS, and lower LVEF and right ventricular fractional area change at baseline. After CRT, responders had a greater reduction of QRS duration, and improvement in LVEF, global longitudinal strain, and echocardiographic dyssynchrony parameters. Multivariate regression analysis showed that left bundle branch block (LBBB), left ventricular end-diastolic volume (LVEDV), tricuspid annular plane systolic excursion (TAPSE), and baseline difference of pre-ejection periods were predictors of a positive response to CRT in this population. Conclusions: LBBB, TAPSE, LVEDV, and pre-ejection time difference are independent variables that can predict adequate response to CRT.


Resumen Antecedentes: La terapia de resincronización cardíaca (TRC) se ha establecido como una terapia efectiva para la insuficiencia cardíaca con fracción de eyección reducida. Ensayos clínicos aleatorizados han demostrado su impacto en la mortalidad y hospitalizaciones por insuficiencia cardíaca, así como la mejora de los síntomas y la calidad de vida. Objetivos: Determinar las variables clínicas, electrocardiográficas y ecocardiográficas que puedan predecir la respuesta a la terapia de resincronización cardíaca (TRC). Método: Estudio unicéntrico, observacional, analítico, retrospectivo, que incluyó 102 pacientes con diagnóstico de IC sometidos a TRC y terapia dirigida por guías, de enero de 2010 a abril de 2020, en un centro de tercer nivel. La respuesta a TRC fue definida como mejoría de la clase funcional de la New York Heart Association en al menos 1 categoría, asociado con una recuperación ≥ 5% en la fracción de expulsión del ventrículo izquierdo (FEVI). Resultados: Incluimos a 102 pacientes, 61 (59.8%) fueron hombres. El promedio de edad al diagnóstico de IC fue 54 ± 18.7 años. La cardiopatía isquémica fue la etiología en 37 (36.3%) pacientes. 51 (50%) pacientes, fueron clasificados como respondedores. Los respondedores presentaron QRS amplio, menor FEVI y menor fracción de acortamiento del ventrículo derecho al inicio del estudio. Después de la TRC, los respondedores tuvieron una mayor reducción en la duración del QRS, mejoría en la FEVI, strain longitudinal global y parámetros de disincronía ecocardiográfica. El análisis de regresión multivariado mostró que el bloqueo de rama izquierdo (BRI), el volumen telediastólico del ventrículo izquierdo (VTDVI) la excursión sistólica del plano anular tricuspídeo (TAPSE) y la diferencia basal del período expulsivo fueron predictores de respuesta positiva a TRC. Conclusiones: BRI, TAPSE, VTDVI y la diferencia basal de períodos preexpulsivos son variables independientes que predicen respuesta adecuada a TRC.

7.
Rev Esp Cardiol (Engl Ed) ; 77(3): 243-253, 2024 Mar.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-37516312

RESUMO

INTRODUCTION AND OBJECTIVES: Remote monitoring (RM) of cardiac implantable electronic devices (CIEDs) is considered more reliable, efficient, and safer than conventional in-person follow-up. However, the implementation of RM is still suboptimal. This study aimed to analyze the impact of the COVID-19 pandemic on the rates of CIED implants and RM activations in Spain. METHODS: The COVID-19 RM Spain Registry was used to analyze the monthly number of all CIED implantations and RM activations from January 2018 to December 2021. A descriptive analysis was performed using aggregated data from the five major CIED manufacturers. RESULTS: A total of 205 345 CIEDs were recorded. The number of implants decreased sharply (48.2%) during the pandemic lockdown (March-June 2020) but gradually increased thereafter, compensating for the previous reduction. However, pacemakers and implantable cardiac defibrillators (ICD) showed an aggregate loss of 7% and 3%, respectively, from the annual average during 2020-2021. In contrast, cardiac resynchronization therapy defibrillators (CRT-D) increased by 17%, and pacemakers (CRT-P) by 4.5% over the 2-year period. The percentage of RM activations increased from 24.5% in 2018 to 49.0% in 2021, with a sharp increase during the lockdown. The RM activation rates consistently increased during the lockdown for all devices: pacemakers (14.4% vs 37.2%; P <.001); ICD (75.6% vs 94.2%; P <.001); CRT-D/CRT-P (68.6-44.2% vs 81.6-61%; P <.001), and implantable loop recorders (50.2% vs 68.7%; P <.001). CONCLUSIONS: The significant decline in implants during the lockdown gradually recovered, except for pacemakers and ICD. However, the COVID-19 pandemic boosted RM for all CIEDs in Spain.


Assuntos
COVID-19 , Terapia de Ressincronização Cardíaca , Desfibriladores Implantáveis , Marca-Passo Artificial , Humanos , Pandemias , COVID-19/epidemiologia , Controle de Doenças Transmissíveis
8.
Arch Cardiol Mex ; 93(Supl): 39-53, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37918411

RESUMO

Epidemiological studies suggest that approximately half of the patients with heart failure (HF) have reduced ejection fraction, while the other half have normal ejection fraction (EF). Currently, international guidelines consider QRS duration greater than 130 ms, in the presence of ventricular dysfunction (EF < 35%), as a criterion for selecting patients for cardiac resynchronization therapy (CRT). CRT helps restore intraventricular and auriculoventricular synchrony, improving left ventricular (LV) performance, reducing functional mitral regurgitation, and inducing reverse LV remodeling. This is evidenced by increased LV filling time and left ventricular ejection fraction, decreased LV end-diastolic and end-systolic volumes, mitral regurgitation, and septal dyskinesia. Because the mechanisms of dyssynchrony may be heterogeneous, no single measure may accurately predict response to CRT. Finally, CRT has been progressively shown to be safe and feasible, improves functional status and quality of life, reversely remodels the LV, decreases the number of hospitalizations, total mortality in patients with refractory HF, LV dysfunction, and intraventricular conduction disorders; is a pacemaker-based therapy for HF and thanks to current technology, safe remote monitoring of almost all types of cardiac devices is possible and provides useful alerts in clinical practice.


Los estudios epidemiológicos sugieren que aproximadamente la mitad de los pacientes con insuficiencia cardiaca (IC) tiene fracción de eyección reducida, mientras que la otra mitad, fracción de eyección (FE) normal. Actualmente, las guías internacionales consideran la duración de QRS mayor a 130 ms, en presencia de disfunción ventricular (FE < 35%), como criterio para selección de pacientes a terapia de resincronización cardiaca (TRC). La TRC ayuda a restaurar la sincronía intraventricular y auriculoventricular, mejorando el rendimiento del ventrículo izquierdo (VI), reduciendo la regurgitación mitral funcional e induciendo la remodelación inversa del VI. Esto se evidencia en el aumento del tiempo de llenado del VI y la fracción de eyección del VI, la disminución de los volúmenes telediastólico y telesistólico del VI, y la regurgitación mitral y discinesia septal. Como los mecanismos de la disincronía pueden ser heterogéneos, es posible que ninguna medida prediga con exactitud la respuesta a la TRC. Finalmente, la TRC cardiaca ha demostrado progresivamente ser segura y factible, mejora el estado funcional y la calidad de vida, remodela inversamente el VI, disminuye el número de hospitalizaciones, la mortalidad total en pacientes con IC refractaria, la disfunción ventricular izquierda y los trastornos de conducción intraventricular; es una terapia basada en marcapasos para la IC y gracias a la tecnología actual es posible realizar una supervisión remota y segura de casi todos los tipos de dispositivos cardiacos y obtener alertas útiles en la práctica clínica.


Assuntos
Terapia de Ressincronização Cardíaca , Cardiologia , Insuficiência Cardíaca , Insuficiência da Valva Mitral , Disfunção Ventricular Esquerda , Humanos , Volume Sistólico , América Latina , Qualidade de Vida , Função Ventricular Esquerda , Insuficiência Cardíaca/terapia , Resultado do Tratamento , Remodelação Ventricular/fisiologia
9.
Rev. argent. cardiol ; 91(1): 41-48, abr. 2023. graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1529569

RESUMO

RESUMEN Introducción : La terapia de resincronización cardíaca (TRC) se indica en pacientes que habitualmente presentan remodelado cardíaco generado por dilatación y disincronía contráctil. La TRC contribuye al remodelado reverso, relacionado con menor mortalidad y hospitalizaciones por insuficiencia cardíaca (IC). Se han observado además mejoras en la conducción intraventricular, con reducción del tiempo de activación. La cuantificación del remodelado eléctrico reverso se ha subutilizado como parámetro de respuesta, con escasos reportes sobre su asociación con la respuesta clínica-estructural. Objetivo : Analizar el remodelado eléctrico reverso intraventricular como parámetro de respuesta a la TRC. Métodos: Se incluyeron pacientes con más de 6 meses de implante. Se obtuvo un ECG con estimulación desactivada (QRS intrínseco, QRSi, post TRC), y por ecocardiograma transtorácico se definió la fracción de eyección ventricular izquierda (FEVI), el diámetro de fin de diástole del ventrículo izquierdo (DFDVI) y la presencia de insuficiencia mitral. Se clasificó a los pacientes según la respuesta clínica-estructural. El remodelado eléctrico se caracterizó con la comparación de la duración del QRS pre y post TRC y la valoración de los cambios del QRS (ΔQRSi) entre grupos. Resultados : Se incluyeron 23 pacientes. Un 39% presentó disminución >10 mseg del QRSi. Observamos un QRSi de -9,3 ± 20,7 mseg en respondedores, y 11,25 ± 18,9 mseg en no respondedores (p = 0,027), más acentuada en los hiper respondedores (ΔQRSi: -14,44 ± 17,40 mseg, p = 0,026). Las mujeres con QRS ≥150 mseg pre TRC exhibieron disminución significativa del QRSi (p = 0,0195). Conclusiones : El remodelado eléctrico reverso se comprobó en 39% de los pacientes que recibieron TRC. Observamos una relación significativa del QRSi con la respuesta clínica-estructural, mayor en hiper respondedores. Mujeres con QRS ancho pre-TRC exhiben remodelado eléctrico reverso más acentuado. Este es un parámetro de fácil acceso e interpretación durante los controles ambulatorios.


ABSTRACT Introduction : Cardiac resynchronization therapy (CRT) is indicated in patients who often present cardiac remodeling due to dilatation and contractile dyssynchrony. CRT contributes to reverse remodeling which is associated with reduced mortality and heart failure (HF) hospitalizations. Improvements in intraventricular conduction with decreased ventricular activation time have also been observed. The quantification of reverse electrical remodeling has been underused as a parameter of response, and there are few reports on its association with the clinical-structural response. Objective : To analyze intraventricular reverse electrical remodeling as a parameter of response to CRT in living individuals. Methods : We included patients implanted at least 6 months ago. A deactivated stimulation ECG (post-CRT intrinsic QRS) was obtained, and by means of transthoracic echocardiography (TTE), the left ventricular ejection fraction (LVEF), the left ventricular end-diastolic diameter (LVEDD) and the presence of mitral regurgitation were defined. Patients were classified according to their clinical-structural response. Electrical remodeling was characterized by comparing pre- and post-CRT QRS duration and assessing QRS changes (ΔiQRS) between groups. Results : A total of 23 patients were included, 39% of which showed a >10 ms decrease in iQRS. We observed a iQRS of -9.3±20.7 ms in responders, and of 11.25±18.9 ms in non-responders (p=0.027), more marked in hyper-responders (ΔiQRS: -14.44±17.40 ms, p=0.026). Women with pre-CRT QRS ≥150 ms showed a significant decrease in iQRS (p=0.0195). Conclusion : Reverse electrical remodeling was found in 39% of the patients under CRT. We noted a significant relationship between iQRS and clinical-structural response, higher in hyper-responders. Women with wider pre-CRT QRS showed more marked reverse electrical remodeling. This parameter is accessible and easy to read in outpatient visits.

10.
Repert. med. cir ; 32(2): 156-167, 2023. ilus, tab, graf
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-1526462

RESUMO

Introducción: la perfusión miocárdica mediante SPECT gatillado (tomografía computarizada de emisión de fotón único) y análisis de fase permiten evaluar la disincronía mecánica y la fracción de eyección, indicando quienes podrían responder a la terapia de resincronización cardíaca. Objetivo: describir la frecuencia de disincronía miocárdica y su relación con los resultados del SPECT en el Hospital de San José de Bogotá entre mayo 2018 y febrero 2019. Metodología: estudio transversal en mayores de 18 años, con electrocardiograma de no más de 6 meses y SPECT gatillado. Para la información sociodemográfica, antecedentes cardíacos, parámetros de electrocardiograma y resultados del SPECT se empleó estadística descriptiva y análisis de correspondencias múltiples. Resultados: se incluyeron 539 pacientes con edad promedio de 68 años, 59.8% con sobrepeso y obesidad, 47.7% en clase funcional NYHA (New York Heart Association) III y IV, 48.4% fumadores y 26.9% diabéticos; 48.1% tenían cateterismo cardíaco y 45.3% infarto agudo de miocardio; en 31% la fracción de eyección del ventrículo izquierdo < 50%. La disincronía se determinó con un ancho de banda >135°; hubo disincronía en 202 pacientes (37.5%) que se relacionó con: género masculino, sobrepeso, diabetes, tabaquismo, infarto agudo del miocardio, colocación de stent, fracción de eyección del ventrículo izquierdo <40% o entre 40%-50% y dilatación isquémica transitoria (TID) >1.22 o entre 1.12-1.22. Discusión y conclusiones: el uso de la nueva herramienta del análisis de fase de medicina nuclear es factible y útil para determinar los pacientes respondedores a la terapia de resincronización cardíaca.


Introduction: Myocardial perfusion gated SPECT (simple photon emission computed tomography) with phase analysis allows the assessment of mechanical dyssynchrony and ejection fraction, for prediction of response to cardiac resynchronization therapy. Objective: to describe myocardial dyssynchrony frequency and its relationship with SPECT results at Hospital de San José de Bogotá between May 2018 and February 2019. Methodology: cross-sectional study in patients aged over 18 years, with a less than 6 months electrocardiogram and gated SPECT. Sociodemographic data, cardiovascular history, electrocardiogram parameters and SPECT results were evaluated using descriptive statistics and multiple correspondence analysis. Results: five-hundred-thirty-nine patients with a mean age of 68 years were included, 59.8% had overweight and obesity, 47.7% were NYHA (New York Heart Association) functional class III and IV, 48.4% smokers and 26.9% diabetics; 48.1% received cardiac catheterization and 45.3% had history of acute myocardial infarction; left ventricular ejection fraction was < 50% in 31%. Dyssynchrony was determined with a >135° bandwidth; dyssynchrony was evidenced in 202 patients (37.5%) and was related to male gender, overweight, diabetes, smoking, acute myocardial infarction, stent placement, left ventricular ejection fraction <40% or 40%-50% and transient ischemic dilation (TID) >1.22 or 1.12-1.22. Discussion and conclusions: the new nuclear medicine phase analysis tool is feasible and useful to identify cardiac resynchronization therapy responders.


Assuntos
Humanos
11.
Rev. esp. cardiol. (Ed. impr.) ; 75(10): 806-816, oct. 2022. ilus, tab, graf
Artigo em Espanhol | IBECS | ID: ibc-211052

RESUMO

Introducción y objetivos La igualdad de oportunidades para acceder a avances técnicos de reconocido valor clínico debe ser una prioridad del sistema público de salud. Se analizó la variabilidad entre todas las comunidades autónomas españolas en el uso de técnicas cardiológicas con indicación ya establecida y su relación con indicadores económicos, carga de enfermedad y mortalidad hospitalaria. Métodos Se analizaron los registros de actividad de las asociaciones de la Sociedad Española de Cardiología desde 2011 a 2019 en coronariografía, intervención coronaria percutánea (ICP) general, ICP primaria, desfibrilador automático implantable (DAI), terapia de resincronización cardiaca e implante percutáneo de válvula aórtica (TAVI). Se obtuvieron índices económicos (producto interior bruto y gasto sanitario per cápita) y datos sobre frecuentación y mortalidad hospitalarias reportados en los informes RECALCAR (Recursos y Calidad en Cardiología) de la Sociedad Española de Cardiología. Se analizó el coeficiente de variación en la actividad y la correlación de esta con los índices regionales económicos, de frecuentación y la razón de mortalidad hospitalaria estandarizada por riesgo. Resultados Existe una variación notable en el uso de las tecnologías, especialmente ICP primaria (18%), DAI (22%), terapia de resincronización cardiaca (36%) y TAVI (42%). Solo se observó cierta correlación con la frecuentación de la ICP general y el DAI. No se encontró una correlación significativa entre la penetración de las técnicas y los índices económicos de riqueza y gasto. La correlación con la mortalidad hospitalaria no mostró resultados significativos, aunque es el análisis con más limitaciones, ya que estas técnicas tienen mayor impacto en la supervivencia en el medio y largo plazo. Conclusiones Los resultados del estudio, con sus limitaciones inherentes (AU)


Introduction and objectives Equal opportunities to access technical advances with recognized clinical value should be a priority of the publicly-funded health system. We analyzed variability among all the Spanish autonomous communities in the use of cardiovascular techniques with an established indication and its relationship with economic indicators, burden of disease, and hospital mortality. Method The activity registries of various Associations of the Spanish Society of Cardiology from 2011 to 2019 were analyzed for coronary angiography, overall percutaneous coronary intervention (PCI), primary PCI, implantable cardioverter-defibrillators (ICD), cardiac resynchronization therapy, and transcatheter aortic valve replacement (TAVR). Economic indices (gross domestic product and per capita health care expenditure) were obtained from public sources and data on attendance rates and mortality from the Resources and Quality in Cardiology (RECALCAR) reports of the Spanish Society of Cardiology. We analyzed the coefficient of variation for activity and the correlation of activity with regional economic indices, attendance rates, and risk-adjusted rates of in-hospital mortality. Results We identified wide variability in the use of technologies, especially for primary PCI (18%), ICD (22%), cardiac resynchronization therapy (36%), and TAVR (42%). A certain correlation with attendance rates was seen only for overall PCI and ICD. In general, no significant correlation was found between the use of the techniques and the economic indices of wealth and expenditure. The correlation with in-hospital mortality showed no significant results, although this was the analysis with the greatest limitations because the impact of these techniques on survival is exerted more in the mid- and long-term Conclusions The results of this study, despite its inherent limitations, show marked variability between autonomous communities in the use of cardiovascular technologies (AU)


Assuntos
Humanos , Mortalidade Hospitalar , Intervenção Coronária Percutânea , Substituição da Valva Aórtica Transcateter , Resultado do Tratamento , Academias e Institutos , Angiografia Coronária , Cardiologia , Registros , Espanha
12.
Rev. esp. cardiol. (Ed. impr.) ; 75(9): 710-717, sept. 2022. tab
Artigo em Espanhol | IBECS | ID: ibc-208223

RESUMO

Introducción y objetivos HeartLogic es un algoritmo multiparamétrico incorporado a desfibriladores automáticos implantables (DAI). La alerta asociada predice descompensaciones de insuficiencia cardiaca (IC). Nuestro objetivo es analizar la asociación entre alertas y eventos clínicos bajo un protocolo de seguimiento común en un registro multicéntrico. Métodos Se evaluaron la fase 1 (investigadores ciegos al estado de la alerta) y las fases 2 y 3 (tras la activación de HeartLogic, según práctica local y un protocolo común respectivamente). Resultados Se incluyó a 288 pacientes en 15 centros. En fase 1, tras una media de observación de 10 meses, hubo 73 alertas (0,72 alertas/paciente-año), con 8 hospitalizaciones y 2 visitas a urgencias por IC (0,10 eventos/año-paciente). No hubo hospitalizaciones fuera del periodo de alerta. Las fases activas tuvieron una media de seguimiento de 16 (IC95%, 15-22) meses, con 277 alertas (0,89 alertas/año-paciente); 33 se asociaron con hospitalizaciones o muerte por IC, 46 con descompensaciones menores y 78 con otros eventos. La tasa de alertas inexplicables fue 0,39/año-paciente. Fuera del estado de alerta solo hubo una hospitalización y una descompensación menor. La mayoría de las alertas (el 82% en fase 2 y el 81% en fase 3; p=0,861) se gestionaron a distancia. La mediana de NT-proBNP fue superior en estado de alerta que fuera de él (7.378 frente a 1.210 pg/ml; p <0,001). Conclusiones El índice HeartLogic se asoció con descompensaciones de IC y otros eventos relevantes, con baja tasa de alertas inexplicables. Un protocolo estandarizado permitió detectar y actuar a distancia con seguridad sobre las alertas (AU)


Introduction and objectives HeartLogic is a multiparametric algorithm incorporated into implantable cardioverter-defibrillators (ICD). The associated alerts predict impending heart failure (HF) decompensations. Our objective was to analyze the association between alerts and clinical events and to describe the implementation of a protocol for remote management in a multicenter registry. Methods We evaluated study phase 1 (the investigators were blinded to the alert state) and phases 2 and 3 (after HeartLogic activation, managed as per local practice and with a standardized protocol, respectively). Results We included 288 patients from 15 centers. In phase 1, the median observation period was 10 months and there were 73 alerts (0.72 alerts/patient-y), with 8 hospitalizations and 2 emergency room admissions for HF (0.10 events/patient-y). There were no HF hospitalizations outside the alert period. In the active phases, the median follow-up was 16 (95%CI, 15-22) months and there were 277 alerts (0.89 alerts/patient-y); 33 were associated with HF hospitalizations or HF death (n=6), 46 with minor decompensations, and 78 with other events. The unexplained alert rate was 0.39 alerts/patient-y. Outside the alert state, there was only 1 HF hospitalization and 1 minor HF decompensation. Most alerts (82% in phase 2 and 81% in phase 3; P=.861) were remotely managed. The median NT-proBNP value was higher within than outside the alert state (7378 vs 1210 pg/mL; P <.001). Conclusions The HeartLogic index was frequently associated with HF-related events and other clinically relevant situations, with a low rate of unexplained events. A standardized protocol allowed alerts to be safely and remotely detected and appropriate action to be taken on them (AU)


Assuntos
Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Insuficiência Cardíaca/diagnóstico , Desfibriladores Implantáveis , Telemonitoramento , Algoritmos , Seguimentos
13.
Rev Esp Cardiol (Engl Ed) ; 75(10): 805-815, 2022 Oct.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-35688688

RESUMO

INTRODUCTION AND OBJECTIVES: Equal opportunities to access technical advances with recognized clinical value should be a priority of the publicly-funded health system. We analyzed variability among all the Spanish autonomous communities in the use of cardiovascular techniques with an established indication and its relationship with economic indicators, burden of disease, and hospital mortality. METHODS: The activity registries of various Associations of the Spanish Society of Cardiology from 2011 to 2019 were analyzed for coronary angiography, overall percutaneous coronary intervention (PCI), primary PCI, implantable cardioverter-defibrillators (ICD), cardiac resynchronization therapy, and transcatheter aortic valve replacement (TAVR). Economic indices (gross domestic product and per capita health care expenditure) were obtained from public sources and data on attendance rates and mortality from the Resources and Quality in Cardiology (RECALCAR) reports of the Spanish Society of Cardiology. We analyzed the coefficient of variation for activity and the correlation of activity with regional economic indices, attendance rates, and risk-adjusted rates of in-hospital mortality. RESULTS: We identified wide variability in the use of technologies, especially for primary PCI (18%), ICD (22%), cardiac resynchronization therapy (36%), and TAVR (42%). A certain correlation with attendance rates was seen only for overall PCI and ICD. In general, no significant correlation was found between the use of the techniques and the economic indices of wealth and expenditure. The correlation with in-hospital mortality showed no significant results, although this was the analysis with the greatest limitations because the impact of these techniques on survival is exerted more in the mid- and long-term. CONCLUSIONS: The results of this study, despite its inherent limitations, show marked variability between autonomous communities in the use of cardiovascular technologies, which is not explained by economic differences or by hospital attendance rates due to the corresponding diseases.


Assuntos
Cardiologia , Intervenção Coronária Percutânea , Substituição da Valva Aórtica Transcateter , Angiografia Coronária , Mortalidade Hospitalar , Humanos , Sistema de Registros , Resultado do Tratamento
14.
Rev. colomb. cardiol ; 29(2): 240-243, ene.-abr. 2022. graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1376885

RESUMO

Resumen El implante percutáneo de un electrodo de estimulación ventricular izquierdo a través del seno coronario para resincronización cardiaca siempre ha implicado un reto y más aún en pacientes con anatomía venosa coronaria compleja. Este caso demuestra cómo una técnica de doble canulación del seno coronario con uso de catéter multi-snare permite la colocación exitosa de un electrodo de estimulación ventricular izquierdo mediante acceso retrógrado a una vena posterolateral estenótica.


Abstract The percutaneous implantation of a left ventricular pacing electrode through the coronary sinus for cardiac resynchronization has always been a challenge, especially in patients with a complex coronary venous anatomy. This case shows how double cannulation of the coronary sinus using a multisnare catheter allows a left ventricular pacing electrode to be placed through retrograde access to a stenotic posterolateral vein, with a good clinical outcome.

15.
Rev. argent. cardiol ; 90(1): 31-35, mar. 2022. tab, graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1407107

RESUMO

RESUMEN Introducción: La insuficiencia mitral funcional (IMF) es común en pacientes con insuficiencia cardíaca (IC). La IMF moderada/ grave (M/G) se asocia a peor pronóstico. Objetivo: Describir la prevalencia de IMF y los mecanismos involucrados en su reducción en respondedores a la terapia de resincronización cardíaca (TRC) a los 6 meses comparados con 12 y 24 meses. Métodos: Entre 2009 y 2018 fueron tratados 338 pts. Respondedores: reducción de CF NYHA ≥1 grado o aumento de la fracción de eyección ventricular izquierda (FEVI) ≥5% (absoluto). La IMF se graduó en 4 puntos: No-IMF, leve, M y G, y se la relacionó con las mediciones ecocardiográficas. Características Basales: edad 64 ±10 años, hombres 71%, CF-NYHA IIIII 92%, bloqueo de rama izquierda (BRI) 67%, QRS ≥150 ms 75%, diámetro diastólico del VI (DDVI) 68 ± 9 mm, diámetro sistólico del VI (DSVI) 52 ± 12 mm, FEVI 24 ± 7%. Resultados: La prevalencia de IMF fue del 92,6%. A los 6 meses, 86% fueron respondedores y 23% de ellos mejoraron de IMF-M/G a IMF-Leve/No-IMF. Hubo un fuerte remodelado inverso: DDVI 68 ± 10 vs 63 ± 11 mm, (p = 0,0001), DSVI 55 ± 12 vs 50 ± 13 mm, (p = 0,0006) y FEVI 25 ± 11 vs 33 ± 10%, (p = 0,00001). Comparando 6 con 12 meses 89,4% fueron respondedores, 8% mejoraron de IMF-M/G a IMF-Leve/No-IMF. Comparando 6 con 24 meses 88% fueron respondedores, 14,6% mejoraron de IMF-M/G a IMF-Leve/No-IMF. Entre 6 y 12 y 6 y 24 meses no hubo remodelado inverso significativo. Conclusiones: La prevalencia de IMF fue elevada. El mayor remodelado inverso y reducción de la IMF se observaron a los 6 meses, siendo el primero el principal mecanismo en la reducción de la IMF. Esta mejoría se sostuvo a los 12 y 24 meses.


ABSTRACT Background: Functional mitral regurgitation (FMR) is common in heart failure, and moderate/severe (M/S) FMR is associated with worse prognosis. Objective: The aim of this study was to describe the prevalence of FMR and the mechanisms involved in its reduction in responders to cardiac resynchronization therapy (CRT) at 6 months compared with 12 and 24 months. Methods: Between 2009 and 2018, 338 patients received CRT. Patients showing NYHA functional class (FC) reduction ≥1 or left ventricular ejection fraction (LVEF) absolute increase ≥5% were considered responders. Functional mitral regurgitation was graded using a 4-point scale into none-, mild-, M- and S-FMR, and was related to echocardiographic measurements. Baseline patient characteristics were: age 64±10 years, men 71%, NYHA FC II-III 92%, left bundle branch block (LBBB) 67%, QRS ≥150 ms 75%, LV diastolic diameter (LVDD) 68±9 mm, LV systolic diameter (LVSD) 52±12 mm, and LVEF 24±7%. Results: The prevalence of FMR was 92.6%. At 6 months, 86% were responders, 23% improved from M/S-FMR to mild/none-FMR and there was strong reverse remodeling: LVDD 68±10 vs. 63±11 mm, (p=0.0001), LVSD 55±12 vs. 50±13 mm, (p=0.0006) and LVEF 25±11 vs. 33±10%, (p=0.00001). Comparing 6 with 12 months, 89.4% were responders and 8% improved M/S-FMR to mild/none-FMR. Comparing 6 with 24 months, 88% were responders and 14.6% improved M/S-FMR to mild/none-FMR. Between 6 and 12 and 6 and 24 months, there was no significant reverse remodeling. Conclusions: The prevalence of FMR was high. The highest reverse remodeling and FMR reduction was observed at 6 months, the former being the main mechanism of FMR reduction. This improvement persisted at 12 and 24 months.

16.
Rev. colomb. cardiol ; 29(1): 111-114, ene.-feb. 2022. graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1376863

RESUMO

Resumen Se presenta el caso de una paciente con atrapamiento de guía al interior del seno coronario durante el procedimiento de cambio de un electrodo (Sentus ProMRI OTW BP L-85) por desalojo asociado a disfunción de la terapia de resincronización cardiaca. Durante el implante del nuevo electrodo se presentó atrapamiento y retención intravascular de la guía utilizada para su posicionamiento a nivel del seno coronario, lo cual hizo imposible su remoción. La paciente no aceptó tratamiento quirúrgico, se encuentra en vigilancia médica y permanece asintomática desde hace 3 años.


Abstract It is reported the case of a patient with guidewire trapping inside the coronary sinus during an electrode exchange procedure (Sentus ProMRI OTW BP L-85) due to dislocation associated with dysfunction of cardiac re-synchronization therapy. During the implantation of the new electrode, entrapment of the guidewire used for its positioning at the level of the coronary sinus and intravascular retention were presented, making it impossible to remove it. The patient did not accept surgical treatment and has been under medical surveillance, asymptomatic for three years.

17.
Rev Esp Cardiol (Engl Ed) ; 75(9): 709-716, 2022 Sep.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-34896031

RESUMO

INTRODUCTION AND OBJECTIVES: HeartLogic is a multiparametric algorithm incorporated into implantable cardioverter-defibrillators (ICD). The associated alerts predict impending heart failure (HF) decompensations. Our objective was to analyze the association between alerts and clinical events and to describe the implementation of a protocol for remote management in a multicenter registry. METHODS: We evaluated study phase 1 (the investigators were blinded to the alert state) and phases 2 and 3 (after HeartLogic activation, managed as per local practice and with a standardized protocol, respectively). RESULTS: We included 288 patients from 15 centers. In phase 1, the median observation period was 10 months and there were 73 alerts (0.72 alerts/patient-y), with 8 hospitalizations and 2 emergency room admissions for HF (0.10 events/patient-y). There were no HF hospitalizations outside the alert period. In the active phases, the median follow-up was 16 (95%CI, 15-22) months and there were 277 alerts (0.89 alerts/patient-y); 33 were associated with HF hospitalizations or HF death (n=6), 46 with minor decompensations, and 78 with other events. The unexplained alert rate was 0.39 alerts/patient-y. Outside the alert state, there was only 1 HF hospitalization and 1 minor HF decompensation. Most alerts (82% in phase 2 and 81% in phase 3; P=.861) were remotely managed. The median NT-proBNP value was higher within than outside the alert state (7378 vs 1210 pg/mL; P <.001). CONCLUSIONS: The HeartLogic index was frequently associated with HF-related events and other clinically relevant situations, with a low rate of unexplained events. A standardized protocol allowed alerts to be safely and remotely detected and appropriate action to be taken on them.


Assuntos
Desfibriladores Implantáveis , Insuficiência Cardíaca , Algoritmos , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/epidemiologia , Insuficiência Cardíaca/terapia , Hospitalização , Humanos , Sistema de Registros
18.
Rev. colomb. anestesiol ; 49(4): e301, Oct.-Dec. 2021. tab, graf
Artigo em Inglês | LILACS, COLNAL | ID: biblio-1341240

RESUMO

Abstract Patients with implantable electric stimulation devices are challenging to the anesthesiologist since these cases demand a comprehensive knowledge about how the device operates, the indications for the implant and the implications that must be addressed during the perioperative period. This article is intended to provide the reader with clear and structured information so that the anesthesiologist will be able to safely deal with the situation of a patient with an implantable cardiac stimulation device, who has been programmed for emergent surgery. A search for the scientific evidence available was conducted in Pubmed / Medline, ScienceDirect, OVID, SciELO), for a non-systematic review. The incidence of the use of cardiac electric stimulation devices has been growing. Their operation is increasingly complex, and demands being constantly updated on the knowledge in the area.


Resumen El paciente portador de un dispositivo de estimulación eléctrica cardiaca implantable se convierte en un reto para el anestesiólogo debido a que implica un conocimiento integral que abarca su funcionamiento, las indicaciones que llevaron a su implante y las implicaciones que se deben abordar en el perioperatorio. Este artículo busca proporcionar al lector información clara y estructurada que le permita al anestesiólogo enfrentarse de forma segura al escenario de un paciente con un dispositivo de estimulación eléctrica cardiaca implantable programado para cirugía emergente. Se realizó una búsqueda de la evidencia científica disponible en bases de datos (Pubmed / Medline, ScienceDirect, OVID, SciELO), para una revisión no sistemática. La incidencia en el uso de dispositivos de estimulación eléctrica cardiaca viene en aumento. Su funcionamiento es cada vez más complejo lo cual implica una actualización permanente del conocimiento en esta área.


Assuntos
Humanos , Estimulação Cardíaca Artificial , Período Perioperatório , Dispositivos de Terapia de Ressincronização Cardíaca , Radiografia , Desfibriladores Implantáveis , Estimulação Elétrica/métodos , Anestesiologistas
19.
Arch Cardiol Mex ; 91(1): 93-99, 2021.
Artigo em Espanhol | MEDLINE | ID: mdl-33661876

RESUMO

La terapia de resincronización cardiaca mediante estimulación hisiana ha demostrado ser efectiva en pacientes con bloqueo de rama izquierda del haz de His e insuficiencia cardiaca. Paciente masculino, con 47 años de edad, con insuficiencia cardiaca, fracción de expulsión del 17% y miocardio dilatada idiopática, electrocardiograma en ritmo sinusal, bloqueo auriculoventricular de 1.er grado, intervalo PR 400 ms, bloqueo completo de rama derecha del haz de His, bloqueo del fascículo anterior de la rama izquierda del haz de His, duración del QRS 200 ms. Se decidió realizar estimulación selectiva del haz de His. La resincronización cardiaca biventricular convencional en pacientes con presencia de bloqueo completo de la rama derecha del haz de His no está indicada debido a la pobre respuesta al tratamiento. La estimulación hisiana permite reclutar la rama bloqueada y reestablecer la conducción a través de ella, de tal forma que, en ausencia de necrosis, se logre sincronía biventricular. En el caso presentado el reclutamiento de la rama derecha mediante estimulación hisiana se reflejó en el restablecimiento de la sincronía biventricular, medida por rastreo de marcas (speckle tracking) e incremento significativo de la fracción de expulsión del ventrículo izquierdo del 17 al 36.6%, con un incremento absoluto del 19.6%.Cardiac resynchronization therapy has proven to be an effective therapy in patients with left bundle branch block and heart failure. Male, 47 years old, heart failure with a left ventricle ejection fraction of 17%, idiopathic heart failure. ECG with sinus rhythm, 1st degree AV block, PR 400 ms, complete right bundle branch block, anterior hemi-fascicle of the left bundle of His, and QRS duration 200 ms. We decided to perform a selective His bundle pacing. In patients with right bundle branch block the biventricular cardiac resynchronization is not indicated due to low treatment response. His bundle pacing allows recruiting the blocked branch and restoring conduction throughout it, therefore, in the absence of necrosis the biventricular synchrony is achieved. We presented a case of His bundle pacing with recruitment of the right bundle branch, which reestablish biventricular synchrony measured by speckle tracking, and with a significant increase of the left ventricle ejection fraction from 17 to 36.6%, with an absolute increase of 19.6%.


Assuntos
Fascículo Atrioventricular , Bloqueio de Ramo/terapia , Terapia de Ressincronização Cardíaca , Bloqueio de Ramo/complicações , Insuficiência Cardíaca/complicações , Humanos , Masculino , Pessoa de Meia-Idade
20.
Arch. cardiol. Méx ; 91(1): 93-99, ene.-mar. 2021. graf
Artigo em Espanhol | LILACS | ID: biblio-1152865

RESUMO

Resumen La terapia de resincronización cardiaca mediante estimulación hisiana ha demostrado ser efectiva en pacientes con bloqueo de rama izquierda del haz de His e insuficiencia cardiaca. Paciente masculino, con 47 años de edad, con insuficiencia cardiaca, fracción de expulsión del 17% y miocardio dilatada idiopática, electrocardiograma en ritmo sinusal, bloqueo auriculoventricular de 1.er grado, intervalo PR 400 ms, bloqueo completo de rama derecha del haz de His, bloqueo del fascículo anterior de la rama izquierda del haz de His, duración del QRS 200 ms. Se decidió realizar estimulación selectiva del haz de His. La resincronización cardiaca biventricular convencional en pacientes con presencia de bloqueo completo de la rama derecha del haz de His no está indicada debido a la pobre respuesta al tratamiento. La estimulación hisiana permite reclutar la rama bloqueada y reestablecer la conducción a través de ella, de tal forma que, en ausencia de necrosis, se logre sincronía biventricular. En el caso presentado el reclutamiento de la rama derecha mediante estimulación hisiana se reflejó en el restablecimiento de la sincronía biventricular, medida por rastreo de marcas (speckle tracking) e incremento significativo de la fracción de expulsión del ventrículo izquierdo del 17 al 36.6%, con un incremento absoluto del 19.6%.


Abstract Cardiac resynchronization therapy has proven to be an effective therapy in patients with left bundle branch block and heart failure. Male, 47 years old, heart failure with a left ventricle ejection fraction of 17%, idiopathic heart failure. ECG with sinus rhythm, 1st degree AV block, PR 400 ms, complete right bundle branch block, anterior hemi-fascicle of the left bundle of His, and QRS duration 200 ms. We decided to perform a selective His bundle pacing. In patients with right bundle branch block the biventricular cardiac resynchronization is not indicated due to low treatment response. His bundle pacing allows recruiting the blocked branch and restoring conduction throughout it, therefore, in the absence of necrosis the biventricular synchrony is achieved. We presented a case of His bundle pacing with recruitment of the right bundle branch, which reestablish biventricular synchrony measured by speckle tracking, and with a significant increase of the left ventricle ejection fraction from 17 to 36.6%, with an absolute increase of 19.6%.


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Bloqueio de Ramo/terapia , Fascículo Atrioventricular , Terapia de Ressincronização Cardíaca , Bloqueio de Ramo/complicações , Insuficiência Cardíaca/complicações
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