Prevalence of Frailty in Patients Undergoing Cardiac Valve Surgery: Comparison of Frailty Tools

Abstract Background There is no consensus among tools for assessing frailty. Objective To evaluate the prevalence of frailty according to different tools in patients referred for elective valve cardiac surgery. Methods This is a cross-sectional study. All patients were ≥ 18 years of age, clinically stable. The following patients were excluded: those unable to perform the tests because of physical, cognitive, or neurological limitations; those requiring non elective/emergency procedures or hemodynamic instability. During the preoperative cardiology visit, frailty was assessed by the Short Physical Performance Battery (SPPB), the Frailty Deficit Index (FDI), handgrip strength, and gait speed 3m. For the entire analysis, the statistical significance was set at 5%. Results Our cohort consisted of 258 subjects. From the total cohort, 201 were ≤ 70 years of age (77.9%), the predominant etiology according to rheumatic disease (50.7% vs 8.8%; p=0.000) with double mitral lesion (24.9% vs 0%; p=0.000). Frailty was present in 32.9% according SPPB, 29.1% with reduced muscular strength. and 8.9% with FDI. Handgrip strength was weaker in elderly patients (26.7 vs 23.6; p=0.051) and gait speed was lower in the younger group, in which 36% were considered frail (36% vs 14%; p=0.002). Variables associated with frailty were age ≥ 70 years, female gender, aortic stenosis, and regurgitation. Conclusion Frailty in adult patients who will have elective heart valve surgery is present even in the younger groups, although the older group with comorbidities are more frail. Frailty was more clearly shown by the SPPB than by the FDI and handgrip tests.

Acute kidney injury after heart valve surgery in elderly patients: any risk factors to modify?

Abstract Introduction: Postoperative acute kidney injury contributes to longer hospital stays and increased costs related to cardiac surgery in the elderly. We analyse the influence of the patient's age on risk factors for acute kidney injury after cardiac valve surgery. Methods: We evaluated the prevalence and risk factors for acute kidney injury in 939 consecutive patients undergoing valve surgery, between 2013 and 2018. Results: The prevalence of acute kidney injury was 19.5%. Hypertension (P=0.017); RR (95% CI): 1.74 (1.10-3.48), age ≥70 years (P=0.006); RR (95% CI): 1.79 (1.17-2.72), preoperative haematocrit <33% (P=0.009); RR (95% CI): 2.04 (1.19-3.48), glomerular filtration rate <60 ml/min/1.73 m2 (P<0.0001); RR (95%) CI: 2.36 (1.54-3.62) and cardiac catheterization <8 days before surgery (P=0.021); RR (95% CI): 2.15 (1.12-4.11) were identified as independent risk factors. In patients older than 70 years, with no kidney disease diagnosed preoperatively, glomerular filtration rate <70 ml/min/1.73 m2, male gender, cardiopulmonary bypass time, preoperative haematocrit <36% and preoperative therapy with angiotensin-converting enzyme inhibitors were risk factors for acute kidney injury after valve surgery. Conclusions: In elderly patients, postoperative acute kidney injury develops with higher values of preoperative glomerular filtration rate than those observed in a younger population. Preoperative correction of anaemia, discontinuation of angiotensin-converting enzyme inhibitors and surgical techniques reducing cardiopulmonary bypass time would be considered to reduce the prevalence of renal failure.

Research Method of Fatigue Performance of Surgically Implanted Heart Valve Stent / 中国医疗器械杂志

The aim of this study was to evaluate the fatigue property

Clinical risk score for postoperative pneumonia following heart valve surgery / 中华医学杂志(英文版)

BACKGROUND@#Postoperative pneumonia (POP) is one of the most common infections following heart valve surgery (HVS) and is associated with a significant increase in morbidity, mortality, and health care costs. This study aimed to identify the major risk factors associated with the occurrence of POP following HVS and to derive and validate a clinical risk score.@*METHODS@#Adults undergoing open HVS between January 2016 and December 2019 at a single institution were enrolled in this study. Patients were randomly assigned to the derivation and validation sets at 1:1 ratio. A prediction model was developed with multivariable logistic regression analysis in the derivation set. Points were assigned to independent risk factors based on their regression coefficients.@*RESULTS@#POP occurred in 316 of the 3853 patients (8.2%). Multivariable analysis identified ten significant predictors for POP in the derivation set, including older age, smoking history, chronic obstructive pulmonary disease, diabetes mellitus, renal insufficiency, poor cardiac function, heart surgery history, longer cardiopulmonary bypass, blood transfusion, and concomitant coronary and/or aortic surgery. A 22-point risk score based on the multivariable model was then generated, demonstrating good discrimination (C-statistic: 0.81), and calibration (Hosmer-Lemeshow χ2 = 8.234, P = 0.312). The prediction rule also showed adequate discriminative power (C-statistic: 0.83) and calibration (Hosmer-Lemeshow χ2 = 5.606, P = 0.691) in the validation set. Three risk intervals were defined as low-, medium-, and high-risk groups.@*CONCLUSION@#We derived and validated a 22-point risk score for POP following HVS, which may be useful in preventive interventions and risk management.@*TRIAL REGISTRATION@#Chictr.org, ChiCTR1900028127; http://www.chictr.org.cn/showproj.aspx?proj=46932.

Mechanical heart valve thrombosis during pregnancy under non / 中南大学学报(医学版)

Anticoagulation drugs should be used for patients with mechanical heart valve (MHV) in case of potential risk of thrombosis. Pregnant women with MHV have to change therapies due to teratogenic effect of some anti-coagulation drugs. European Society of Cardiology clinical guidelines for the management of cardiovascular diseases during pregnancy gives specific suggestions for anticoagulation therapy.We have treated 2 patients with mechanical heart valve thrombosis (MVT) during pregnancy: One received low molecular weight heparin (LMWH) throughout the pregnancy and developed MVT at the third trimester of pregnancy; one developed MVT at the first trimester when replacing vitamin K antagonists (VKA) with LMWH. These patients raised secondary reflection on the balance between clinical guideline and personalized medicine. During LMWH therapy, we should dynamically monitor patients' anti-activated factor X (anti-Xa) level to evaluate coagulation function during pregnancy. When a pregnant woman with MHV develops symptoms of acute heart failure, stuck mechanical valve should be paid attention to and surgery should be promptly performed if necessary.

Characteristics of infectious endocarditis patients from a town in Boyacá. A cross-sectional study / Caracterización de los pacientes con endocarditis infecciosa en población de Boyacá. Estudio transversal

Abstract Infectious endocarditis (IE) is a multisystemic disease caused by an infection, generally bacterial, of the endocardial surface. Its incidence is three to nine cases per 100,000 persons. Objective: to characterize the patients with a diagnosis of infectious endocarditis seen at the Hospital Universitario San Rafael de Tunja. Materials and methods: a descriptive observational study. Patients seen at the Hospital Uni versitario San Rafael de Tunja between January 1, 2010 and January 1, 2019. Sociodemographic, clinical, paraclinical, imaging, treatment and outcome variables were gathered. Results: a total of 87 persons with a confirmed diagnosis of infectious endocarditis were seen. The average age was 38.77 years, with an SD ± 13.32 years. Leukocytosis was seen in 90%, neutrophilia in 85%, lymphocytosis in 3%, thrombocytopenia in 4%, elevated serum CRP in 85%, transaminitis in 45%, hyponatremia in 2% and hypernatremia in 4%. All patients received antibiotic treatment; only 23% required surgery. Conclusions: this case series found similar clinical and microbiological characteristics to those reported in other national and international studies. Males were affected more often than females, with the main etiological agent being Staphylococcus aureus. Fever and infectious vasculitis signs were the main clinical manifestations, most often affecting the mitral valve.

Resumen La endocarditis infecciosa (EI) es una enfermedad multisistémica que resulta de una infección, generalmente bacteriana, de la superficie endocárdica. Su incidencia es de tres a nueve casos por cada 100 000 personas. Objetivo: realizar una caracterización de los pacientes atendidos en el Hospital Universitario San Rafael de Tunja con diagnóstico de endocarditis infecciosa. Material y métodos: estudio observacional descriptivo. Pacientes atendidos en el Hospital Universitario San Rafael de Tunja entre el 1°. de enero del 2010 a 1°. de enero del 2019. Se tomaron variables sociodemográficas, clínicas, paraclínicas, imagenológicos, terapéuticas y de desenlaces. Resultados: en total se atendieron 87 personas que presentaron diagnóstico confirmado de endocarditis infecciosa. La edad promedio fue 38.77 años con una DE ± 13.32 años. Se observó leucocitosis en 90%, neutrofilia en 85%, linfocitosis en 3%, trombocitopenia en 4%, aumento de los valores séricos de PCR en 85%, transaminitis en 45%, hiponatremia en 2% e hipernatremia en 4%. Todos los pacientes recibieron manejo antibiótico, tan solo 23% requi rieron manejo quirúrgico. Conclusiones: en esta serie de casos se encontraron características clínicas y microbiológicas similares a lo reportado en otras investigaciones nacionales e internacionales. Afectando con mayor frecuencia a personas del sexo masculino, siendo el principal agente causal el Staphylococcus aureus, el agente causal. La fiebre y los signos de vasculitis infecciosa fueron las principales manifestacio nes clínicas, afectado con mayor frecuencia la válvula mitral.

Image analysis of morphometric evaluation from the heart valves for age estimation in Thai population / Análisis de la evaluación morfométrica de las valvas cardíacas para la estimación de la edad en la población tailandesa

Determination of age represents one of the most important aspects in forensic identification. Through aging, changes can occur in morphological structures of the heart valves. The objective is to examine the relationship between the dimensions of the rigth atrioventricular (tricuspid), pulmonary, left atrioventricular (mitral), and aortic valves and age at death. Sixty fresh human hearts were obtained from Department of Anatomy and Department of Forensic Medicine, Faculty of medicine, Chiang Mai University, Thailand. The age of individuals was between 20-90 years. We investigated the morphometric parameters of the valves were taken including: valve circumference, length, the height and area of each leaflet. All parameters were measured by using specific image analysis software. The correlation test and predictive equation were established. The positive correlation between the circumference, area of posterior leaflet, height of anterior leaflet, and area of anterior leaflet of the rigth atrioventricular valve were found. The left atrioventricular valve showed correlation with age in circumference, length and area of posterior leaflet. For the pulmonary and aortic valves, there were correlated between circumference at sinotubular junction and leaflet sizes in almost leaflets. The circumference at sinotubular junction of the pulmonary valve was highest significantly correlation with age (r=0.693). The predictive equation was age = -3.659+0.652(Circumference at sinotubular junction of the pulmonary valve) with standard error of ± 14.7 years. Additional knowledge of morphometric features in human heart valves and its relationship with age could be used as age indicator in forensic field.

La determinación de la edad representa uno de los aspectos más importantes en la identificación forense. Pueden ocurrir cambios a través del envejecimiento, en las estructuras morfológicas de las válvulas cardíacas. El objetivo de este estudio fue examinar la relación entre las dimensiones de las valvas atrioventricular derecha (tricúspide), pulmonar, atrioventricular izquierda (mitral) y aórtica, y la edad en relación a la muerte. Se obtuvieron sesenta corazones humanos frescos del Departamento de Anatomía y el Departamento de Medicina Forense de la Facultad de Medicina de la Universidad de Chiang Mai, Tailandia. La edad de las personas fluctuaba entre los 20 y 90 años. Investigamos los parámetros morfométricos de las valvas analizadas, incluyendo: circunferencia de la valva, longitud, altura y área de cada valva. Todos los parámetros se midieron utilizando un software de análisis de imagen específico. Se estableció la prueba de correlación y la ecuación predictiva. Se encontró la correlación positiva entre la circunferencia, el área de la valvula posterior, la altura de la valvula anterior y el área de la valvula anterior de la valva atrioventricular derecha. La valva atrioventricular izquierda mostró correlación con la edad en la circunferencia, longitud y área de la valvula posterior. Para las valvas pulmonar y aórtica, se correlacionó entre la circunferencia en la unión sinotubular y el tamaño de las válvulas. La circunferencia en la unión sinotubular de la valva pulmonar fue la mayor correlación significativa con la edad (r = 0,693). La ecuación predictiva fue edad = -3,659 + 0,652 (circunferencia en la unión sinotubular de la valva pulmonar) con error estándar de ± 14,7 años. El conocimiento adicional de las características morfométricas en las valvas cardíacas humanas y su relación con la edad podría usarse como indicador de edad en el campo forense.

Caracterización clínico-epidemiológica con enfoque quirúrgico de la endocarditis infecciosa en la región central de Cuba / Clinico-epidemiological characterization with a surgical approach of infective endocarditis in the central region of Cuba

RESUMEN Introducción: La endocarditis infecciosa no ha disminuido su incidencia y mortalidad en los últimos 30 años. Objetivo: Caracterizar los pacientes operados por diagnóstico de endocarditis infecciosa activa. Método: Se realizó un estudio descriptivo retrospectivo que incluyó a 109 pacientes con diagnóstico de esta enfermedad y fueron intervenidos quirúrgicamente en el Cardiocentro Ernesto Che Guevara (Cuba) desde julio de 2010 hasta junio de 2018. La información se obtuvo de las historias clínicas y el informe operatorio. Resultados: La endocarditis infecciosa sobre válvula protésica fue diagnosticada en 15 pacientes (13,8%), pero la más frecuente fue la relacionada con la colonización de dispositivos intracardíacos (51,4%), razón por la que el procedimiento quirúrgico más utilizado fue el cambio de sistema de estimulación. La principal indicación quirúrgica fue la infección incontrolada en 63 casos (57,8%), seguida por la insuficiencia cardíaca (38 pacientes; 34,9%) y en 67 casos (61,5%) los hemocultivos resultaron negativos. La sustitución de la válvula nativa por una prótesis mecánica se realizó en 28 pacientes (25,7%), de los cuáles 15 (13,8%) fueron en posición mitral. El recambio de una prótesis mecánica por otra de igual características se llevó a cabo en 14 (12,8%) casos, 8 (7,3%) de ellos mitrales. La mortalidad global fue de 17,4%, más evidente en aquellos con endocarditis sobre válvula protésica izquierda (7/15). Conclusiones: Predominaron el sexo masculino y la edad mayor de 60 años, así como la presencia de vegetaciones sobre dispositivos intracardíacos y los hemocultivos negativos. La endocarditis sobre válvula protésica se asoció significativamente con la mortalidad.

ABSTRACT Introduction: Infective endocarditis has not decreased its incidence and mortality in the last 30 years. Objective: To characterize patients operated on due to diagnosis of active infective endocarditis. Method: A retrospective, descriptive study was carried out, which included 109 patients with a diagnosis of this disease, who underwent surgery at Cardiocentro Ernesto Che Guevara (Cuba), from July 2010 to June 2018. The information was obtained from the medical records and the surgical report. Results: Prosthetic valve infective endocarditis was diagnosed in 15 patients (13.8%), but the most frequent was the one related to intracardiac device colonization (51.4%), reason why the most used surgical procedure was the change of the electrical stimulation system. The main surgical indication was the uncontrolled infection in 63 cases (57.8%), followed by heart failure (38 patients; 34.9%) and in 67 cases (61.5%), the blood cultures were negative. The native valve replacement for a mechanical prosthetic valve was performed in 28 patients (25.7%), of which 15 (13.8%) were in mitral position. The replacement of a mechanical prosthetic valve for another with the same characteristics was carried out in 14 (12.8%) cases, 8 (7.3%) of them were mitral. Overall mortality was of 17.4%, more evident in those with left-side prosthetic valve endocarditis (7/15). Conclusions: Male gender and age over 60 years old predominated, as well as the presence of vegetations on intracardiac devices, and negative blood cultures. The prosthetic valve endocarditis was significantly associated with mortality.

Internal Validation of a Risk Score for Prediction of Postoperative Atrial Fibrillation after Cardiac Surgery

Abstract Background: Postoperative atrial fibrillation (POAF) after cardiac surgery has great clinical and economic implications. Many attempts have been made to identify risk factors aiming at a better evaluation of prophylactic treatment strategies. Objective: To perform an internal validation of a risk score for POAF. Methods: A prospective cohort of 1,054 patients who underwent myocardial revascularization and/or valve surgery was included. The risk score model was developed in 448 patients, and its performance was tested in the remaining 606 patients. Variables with a significance level of 5% in the cohort were included and subjected to a multiple logistic regression model with backward selection. Performance statistics was performed using the c-statistic, the chi-square and the Hosmer-Lemeshow (HL) goodness-of-fit, Pearson's correlation coefficient. Results: Four variables were considered predictors of outcome: age (≥ 70 years), mitral valve disease, the non-use or discontinuation of beta-blockers and a positive water balance (> 1,500 mL). The ROC curve was 0.76 (95% confidence interval [CI]: 0.72-0.79). The risk model showed a good ability according to the performance statistics - HL test x(2) = 0.93; p = 0.983 and r = 0.99 (Pearson's coefficient). There was an increase in the frequency of POAF with the increase of the score: very low risk = 0.0%; low risk = 3.9%; intermediate risk = 10.9%; and high risk = 60.0%; p < 0.0001. Conclusion: The predictive variables of POAF allowed us to construct a simplified risk score. This scoring system showed good accuracy and can be used in routine clinical practice.

Perfil clínico de mulheres submetidas à cirurgia de revascularização do miocárdio e troca valvar / Perfil clínico de las mujeres sometidas a la cirugía de revascularización miocárdica e intercambio de válvulas / Clinical profile of women submitted to myocardial revascularization surgery and valve exchange

Objetivo descrever o perfil clínico de mulheres submetidas à cirurgia de revascularização do miocárdio e troca valvar. Método estudo documental, retrospectivo, analítico, quantitativo, realizado em 131 prontuários de pacientes submetidas à cirurgia cardíaca em um hospital no sul do Rio Grande do Sul. A coleta de dados foi realizada no ano de 2018. Os dados foram analisados pelos testes de Qui-quadrado e o teste de Correlação de Spearman. Foi considerado o nível de significância de 5% para todos os testes estatísticos (p<0,05). Resultados verificou-se que houve associações significativas nas características clínicas para tabagismo, obesidade e infarto agudo do miocárdio recente (p=0,009, 0,017 e 0,029, respectivamente). Conclusão os achados mostraram características importantes de um grupo significativo de pacientes, sinalizando a atenção que deve ser atribuída às atividades de prevenção da saúde e controle dos fatores de risco nas mulheres, principalmente pela associação do climatério e o desenvolvimento de doenças cardiovasculares.

Objetivo describir el perfil clínico de las mujeres sometidas a cirugía de revascularización miocárdica e intercambio de válvulas. Método estudio documental, retrospectivo, analítico, cuantitativo, realizado con 131 registros médicos de pacientes sometidas a cirugía cardíaca en un hospital en el sur de Rio Grande do Sul. Los datos se recogieron en 2018. Los datos fueron analizados por pruebas de chi-cuadrado y prueba de correlación de Spearman. El nivel de significancia del 5% se consideró para todas las pruebas estadísticas (p<0.05). Resultados se encontró que había asociaciones significativas en las características clínicas para el tabaquismo, la obesidad y el infarto agudo de miocardio reciente (p-0,009, 0,017 y 0,029, respectivamente). Conclusión los hallazgos mostraron características importantes de un grupo significativo de pacientes, señalando la atención que debe atribuirse a las actividades de prevención de la salud y el control de los factores de riesgo en las mujeres, principalmente debido a la asociación de las enfermedades climáticas y el desarrollo de enfermedades cardiovasculares.

Objective to describe the clinical profile of women undergoing myocardial revascularization surgery and valve replacement. Method documentary, retrospective, analytical, quantitative study, conducted with 131 medical records of patients submitted to cardiac surgery in a hospital in southern Rio Grande do Sul. Data were collected in 2018. The data were analyzed by chi-square tests and Spearman's correlation test. The significance level of 5% was considered for all statistical tests (p<0.05). Results there were significant associations in the clinical characteristics for smoking, obesity and recent acute myocardial infarction (p=0.009, 0.017 and 0.029, respectively). Conclusion the findings showed important characteristics of a significant group of patients, stressing the attention that should be attributed to health prevention activities and control of risk factors in women, mainly due to the association of climacteric and the development of cardiovascular diseases.

Relationship between emotional states before cardiac valve surgeries with postoperative complications / Relaciones entre el estado emocional antes de la cirugía cardíaca valvar con complicaciones en el post-operatorio / Relações entre o estado emocional antes da cirurgia cardíaca valvar com complicações no pós-operatório

ABSTRACT Objective: To investigate associations between preoperative anxiety and depression symptoms and postoperative complications and the sociodemographic and clinical characteristics of patients undergoing valve repair surgery. Method: Observational, exploratory and prospective study. The consecutive non-probabilistic sample consisted of patients undergoing their first valve repair surgery. Data were collected from September 2013 to September 2015, in a university hospital in the interior of São Paulo, Brazil. Symptoms were assessed using the Hospital Anxiety and Depression Scale and analyzed using Mann-Whitney and Spearman correlation; alpha was established at 5%. Results: Among the 70 participants, depressive symptoms were more frequent among women (p=0.042) and among patients experiencing postoperative agitation (p=0.039) Conclusion: In this study, depressive symptoms were associated with being a woman and postoperative agitation; the same was not true in regard to anxiety symptoms.

RESUMEN Objetivo: Investigar la asociación de los síntomas de ansiedad y depresión preoperatorios con complicaciones en postoperatorio y con características sociodemográficas y clínicas de pacientes sometidos a la corrección quirúrgica de valvopatías. Método: Estudio observacional, exploratorio y prospectivo. Muestra consecutiva y no probabilística fue constituida por pacientes sometidos a la primera cirugía de corrección de valvopatías. Los datos fueron recolectados de septiembre/2013 a septiembre/2015, en un hospital universitario del interior del São Paulo. Los síntomas fueron evaluados por el Hospital Anxiety and Depression Scale. Los datos fueron analizados por las pruebas de Mann-Whitney y Correlación de Spearman, alpha=5%. Resultados: Entre los 70 pacientes, fue encontrado mayor presencia de síntomas depresivos entre las mujeres (p=0,042) y en el grupo con agitación (p=0,039) en el postoperatorio. Conclusión: En el grupo estudiado, los síntomas depresivos se asociaron al sexo femenino y la agitación en el postoperatorio, lo que no ocurrió con los síntomas de ansiedad.

RESUMO Objetivo: Investigar a associação dos sintomas de ansiedade e depressão pré-operatórios com complicações no pós-operatório e com características sociodemográficas e clínicas de pacientes submetidos à correção cirúrgica de valvopatias. Método: Estudo observacional, exploratório e prospectivo. Uma amostra consecutiva e não probabilística foi constituída por pacientes submetidos à primeira cirurgia de correção de valvopatias. Os dados foram coletados de setembro/2013 a setembro/2015, em um hospital universitário do interior paulista. Os sintomas foram avaliados pela Hospital Anxiety and Depression Scale. Os dados foram analisados pelos testes de Mann-Whitney e Correlação de Spearman, alpha de 5%. Resultados: Entre os 70 pacientes, encontrou-se maior presença de sintomas depressivos entre as mulheres (p=0,042) e no grupo com agitação (p=0,039) no pós-operatório. Conclusão: No grupo estudado, sintomas depressivos foram associados ao sexo feminino e a agitação no pós-operatório, o que não ocorreu com os sintomas de ansiedade.

Manifestaciones clínicas, diagnóstico y tratamiento de pacientes con valvulopatía reumática / Clinical manifestations, diagnosis and treatment of patients with rheumatic valve disease

Las enfermedades valvulares cardíacas constituyen condiciones de gran impacto en la calidad de vida de las personas que las padecen y que influyen también de una u otra forma en el desarrollo de un país, pues muchas se manifiestan en edades en que la persona es económicamente activa y el inicio y exacerbaciones de los síntomas traducen incapacidades laborales frecuentes, hospitalizaciones y más aún si se le brinda intervención quirúrgica. Debido a que por falta de conocimiento o el desarrollo paulatino de las manifestaciones clínicas de las mismas, son detectadas en etapas avanzadas, cuando las opciones de tratamiento son escasas, paliativas o las opciones quirúrgicas son de riesgo más que beneficio y considerando que la cardiopatía reumática es una causa importante y prevenible de morbilidad y mortalidad en todas las regiones, sobre todo en países en vías de desarrollo presentando una alta frecuencia en nuestra región y la causa de más de 300 000 muertes cada año, especialmente entre grupos vulnerables y marginados por lo que es comprensible también la importancia en la prevención, detección y tratamiento oportuno y adecuado de ciertas enfermedades respiratorias agudas, como la faringoamigdalitis bacteriana. Estas afecciones, detectadas principalmente por síntomas como disnea y lipotimias, confirmadas por estudio de ecocardiografía, y que constituyen las indicaciones más frecuentes de una intervención quirúrgica, las cual se ha desarrollado de mejor manera en los últimos años, realizadas en nuestro país en el centro de tercer nivel del sistema de salud, el Hospital Nacional Rosales

Comparison on efficacy and safety of different bridging anticoagulation therapies in patients undergoing mechanical heart valve replacement surgery / 中华心血管病杂志

Objective: To evaluate the efficacy and safety of different bridging anticoagulant therapies in patients undergoing mechanical heart valve replacement (MHVR) surgery. Methods: Consecutive patients undergoing MHVR surgery from January 2018 to December 2018 in First Hospital of Lanzhou University were prospectively enrolled in this study. Patients were divided into unfractionated heparin (UFH) group and low molecular weight heparin (LMWH) group according to the postoperative bridging anticoagulation methods. Preoperative clinical data and postoperative related time and cost parameters, including drainage time, duration of stay in intensive care unit (ICU), postoperative time (interval from end of operation to discharge) and INR stabilization time (interval from start of bridge anticoagulation to INR value reaching the standard for 2 consecutive days) of all enrolled patients were collected, and all patients were followed up for 4 weeks and thromboembolic or bleeding events were analyzed. Multivariate logistic regression was used to determine the independent prognostic factors of thromboembolic or bleeding events after MHVR receiving various bridging anticoagulant therapies. Results: A total of 217 patients were included in the study, including 120 patients in the UFH group and 97 patients in the LMWH group. Stroke occurred in two patients in the UFH group, while no stroke event occurred in the LMWH group. The incidence of bleeding events was significantly higher (9.28%(9/97) vs. 1.67%(2/120), P=0.02), while the drainage time, duration of stay in ICU, postoperative time, INR stabilization time were all significantly shorter in LMWH group than in UFH group (all P<0.05). Multivariate logistic regression analysis showed that bridging anticoagulation therapies (OR=0.18, 95%CI 0.04-0.86, P=0.03), fibrinogen level (OR=1.99, 95%CI 1.16-3.41, P=0.01) and creatinine level (OR=1.05, 95%CI 1.01-1.08, P=0.04) were independent prognostic factors for bleeding events. Conclusion: LMWH use is associated with increased risk of bleeding events, but can significantly reduce the drainage time, duration of stay in ICU, postoperative time, INR stabilization time in patients post MHVR surgery.

Revisión de la evidencia de estudios de supervivencia de pacientes con prótesis valvular biológica / Review of the evidence in survival studies of patients with a biological valve replacement

Resumen Introducción: las modificaciones en las características estructurales/funcionales de las prótesis valvulares han derivado en un aumento en las curvas de sobrevida/supervivencia de los pacientes, dada la reducción de las tasas de morbilidad y mortalidad posteriores a intervenciones quirúrgicas de las válvulas cardíacas y los cambios sustanciales en la relación costo-efectividad y costo-beneficio de estos procedimientos. Objetivo: conocer la supervivencia de pacientes mayores de 60 años de edad, con prótesis valvular biológica. Materiales y métodos: revisión de estudios de seguimiento publicados en los cuales se evaluó la supervivencia de los pacientes sometidos a reemplazo valvular. Se hizo una búsqueda de artículos científicos registrados en la base de datos PubMed, de acuerdo con los descriptores seleccionados como palabras clave − Prótesis Valvulares Cardíacas/Heart Valve Prosthesis, Bioprótesis/Bioprosthesis, Supervivencia/Survival − en el programa de gestión de referencias EndNote. Se valoró la fuerza de evidencia científica de cada uno de los artículos seleccionados con la escala de McMaster para estudios cuantitativos. Resultados: se obtuvieron 12 referencias y se descartaron 5 (41,7%); calificación global de "fuerte" con la escala de McMaster 7 (58,3%). El tiempo promedio de seguimiento fue de 13,7 años y la razón de masculinidad de 1:0,8. La edad promedio de los pacientes fue 67,2 (rango 60,0-78,5) años. La supervivencia promedio a diez años fue del 65%. Conclusiones: se observa mayor supervivencia entre los pacientes sometidos a reemplazo valvular mecánico versus biológico; sin embargo, la literatura plantea como opción razonable el uso de prótesis biológicas en pacientes mayores de 60 años. Se reconoce, así mismo, la necesidad de hacer más estudios que puedan corroborar los hallazgos.

Abstract Introduction: The modifications in the structural / functional features of replacement valves have led to an increase the survival curves of the patients. This can be seen in the reduction in morbidity and mortality rates after the surgical intervention of the cardiac valves, as well as the substantial changes in the cost-effectivity and cost-benefit ratio of these procedures. Objective: To determine the survival of patients over 60 years of age with a biological valve replacement. Materials and methods: A review of follow-up published studies that evaluated the survival of patients subjected to a valve replacement. A search was made of the scientific articles registered in the PubMed databases, using the selected descriptors as Key words: Heart Valve Prosthesis, Bioprosthesis, Survival, in the references management program-EndNote. The strength of the scientific evidence in each of the selected articles was assessed using the McMaster scale for quantitative studies. Results: A total of 12 references were found and 5 (41.7%) were discarded, and 7 (58.3%) had an overall "strong" score with the McMaster scale. The mean follow-up time was 13.7 years, and the male ratio was 1:0.8. The mean age of the patients was 67.2 (range: 60.0-78.5) years. The mean survival rate at 10 years was 65%. Conclusions: A higher survival was observed between the patients fitted with a mechanical versus a biological valve. However, the literature has established the use of a biological replacement valve as a reasonable option in patients over 60 years of age. It is also recognised that more studies are needed that can corroborate the findings.

Prótese valvar Starr-Edwards - meio século de durabilidade / Starr-Edwards valve prothesis - half a century of durability

A prótese de Star-Edwards foi a primeira válvula mecânica a ser implantada no mundo, no ano de 1960. Cerca de 200.000 pacientes foram beneficiados com esse modelo, porém, caiu em desuso por suas frequentes complicações como hemólise, anemia e tromboembolismos, apesar de sua notável durabilidade. Neste artigo apresentamos um caso de paciente com a maior durabilidade com manutenção da funcionalidade da prótese S-E, já relatado na literatura. O paciente fez o seguimento cardiológico corretamente, bem como usou a anticoagulação adequada. Apresentou disfunção de outras valvas, porém a prótese S-E manteve-se estável e funcional. Inclusive, necessitou de cirurgia para troca valvar mitral, mas não da prótese de S-E em posição aórtica. Este relato foi realizado através da história clínica do paciente e do levantamento de dados da literatura sobre próteses valvares e sua durabilidade. Existem relatos de durabilidade de próteses valvares com aproximadamente 30 a 40 anos, mas nenhum relato próximo ou igual a este com 49 anos de durabilidade. A importância dos cuidados pós-operatórios, uso correto dos anticoagulantes e o seguimento clínico para controle das possíveis complicações da prótese, foi mostrada neste artigo através do relato desse caso

In 1960, the Starr-Edwards prosthesis became the first mechanical valve to be implanted, worldwide. Roughly 200,000 patients benefited from this model. However, it has now fallen out of use due to its frequent complications, such as hemolysis, anemia and thromboembolisms, despite its noteworthy durability. In this article, we present a case of a patient with the longest durability with maintenance of functionality of the S-E prosthesis reported in the literature. The patient had correctly followed the cardiological follow-up, including adequate use of anti-coagulant medications. The patient presented dysfunction in other valves, but the S-E prosthesis remained stable and functional. The patient even required mitral valve replacement surgery, but not for the S-E prosthesis in the aortic position. This report was based on patient's clinical history and a survey of the literature data on valve prostheses and their durability. There are reports of prostheses remaining stable for approximately 30 to 40 years, but none that came close to this one, which had lasted for 49 years The importance of postoperative care, the correct use of anti-coagulant medicines, and clinical follow-up to minimize the possible complications of the prosthesis, were shown in this article through this case report