Prognóstico Relacionado à Terapia de Reperfusão Pós-Síndrome Coronariana Aguda na Atenção Secundária: Análise de Sobrevida em Longo Prazo na Estratégia ERICO / Prognosis Related to Reperfusion Therapy Post-Acute Coronary Syndrome in Secondary Care: Long-Term Survival Analysis in the ERICO Study

Resumo Fundamento A relação entre terapia de reperfusão após a síndrome coronariana aguda (SCA) e mortalidade na atenção secundária não é bem conhecida. Objetivos Avaliar o impacto de três estratégias terapêuticas: (1) terapia medicamentosa exclusiva, (2) Angioplastia Transluminal percutânea coronaria (ATPC) e (3) revascularização do miocárdio (RM) na sobrevida em longo prazo de participantes da Estratégia de Registro de Insuficiência Coronariana Aguda (ERICO). Métodos Análises de sobrevida para mortalidade por todas as causas, mortalidade por doença cardiovascular (DCV) e mortalidade por doença arterial coronariana (DAC) foram realizadas de acordo com três estratégias terapêuticas (tratamento clínico exclusivo, ATPC ou RM). Modelos de regressão de Cox foram usados para estimar o hazard ratio (HR) com intervalo de confiança de 95% (IC95%) de 180 dias a quatro anos de acompanhamento após a SCA. Os modelos são apresentados como modelo sem ajuste ou ajustado quanto à idade, sexo e DAC prévia, tipo de SCA, tabagismo, hipertensão, dislipidemia, fração de ejeção do ventrículo esquerdo e de acordo com o número de artérias coronárias principais obstruídas (≥50%). Resultados Entre os 800 participantes, as piores taxas de sobrevida (mortalidade por todas as causas e DCV) foram detectadas entre os indivíduos que se submeteram a RM. Houve correlação entre RM e DAC [HR: 2,19 (IC95% 1,05-4,55)], mas o risco perdeu significância no modelo multivariado. A ATPC foi associada a uma menor probabilidade de eventos fatais durante os quatro anos de acompanhamento: mortalidade por todas as causas [HR, análise multivariada: 0,42 (IC95% 0,26-0,70)], por DCV [HR: 0,39 (95% CI: 0,20-0,73)] e DAC [HR, análise multivariada: 0,24 (IC95% 0,09-0,63)] em comparação aos submetidos ao tratamento clínico exclusivo. Conclusão No ERICO, a ATPC após a SCA foi associada a um melhor prognóstico, principalmente sobrevida por DAC.

Abstract Background Relationship between reperfusion therapy post-acute coronary syndrome (ACS) and mortality in secondary care is not well-known. Objectives To evaluate the impact of three therapeutic strategies: (1) exclusive medical therapy, (2) percutaneous coronary intervention (PCI) and (3) coronary artery bypass grafting (CABG) on long-term survival of participants in the Strategy of Registry of Acute Coronary Syndrome (ERICO) study. Methods Survival analyses for all-cause, cardiovascular (CVD) and coronary artery disease (CAD) mortality were performed according to three therapeutic strategies (exclusive medical therapy, PCI or CABG). Cox regression models were used to estimate the hazard ratio (HR) with respective 95% confidence interval (95%CI) from 180 days to four years of follow-up after ACS. Models are presented as crude, age-sex adjusted and further adjusted for previous CAD, ACS subtype, smoking, hypertension, dyslipidemia, left ventricular ejection fraction and according to the number of obstructed (≥ 50%) major coronary arteries. Results Among 800 participants, the lowest crude survival rates were detected among individuals who underwent CABG (all-cause and CVD). CABG was correlated to CAD (HR: 2.19 [95% CI: 1.05-4.55]). However, this risk lost significance in the full model. PCI was associated to lower probability of fatal events during four-year follow-up: all-cause [multivariate HR: 0.42 (95% CI: 0.26-0.70)], CVD [HR: 0.39 (95% CI: 0.20-0.73)] and CAD [multivariate HR: 0.24 (95% CI: 0.09-0.63)] compared to those submitted to exclusive medical therapy. Conclusion In the ERICO study, PCI after ACS was associated to better prognosis, particularly CAD survival.

Avaliação no Mundo Real de um Stent Eluidor de Sirolimus de Hastes Ultrafinas em Pacientes com Infarto do Miocárdio com Supradesnivelamento do Segmento ST Submetidos à Intervenção Coronária Percutânea Primária (Registro INSTEMI) / Real-World Assessment of an Ultrathin Strut, Sirolimus-Eluting Stent in Patients with ST-Elevation Myocardial Infarction Submitted to Primary Percutaneous Coronary Intervention (INSTEMI Registry)

Resumo Fundamento O padrão-ouro atual dos stents farmacológicos (SF) coronários consiste em ligas metálicas com hastes mais finas e polímeros bioabsorvíveis. Objetivos Nosso objetivo foi comparar um stent eluidor de sirolimus de hastes ultrafinas (Inspiron®) com outras plataformas de SF de terceira geração em pacientes com infarto do miocárdio com supradesnivelamento do segmento ST (IAMCSST) submetidos à intervenção coronária percutânea (ICP) primária. Métodos Analisamos dados de um registro multicêntrico de IAMCSST de centros de referência da Região Sul do Brasil. Todos os pacientes foram submetidos à ICP primária, seja com Inspiron® ou outro SF de segunda ou terceira geração. Foi calculado pareamento por escore de propensão (PEP) para gerar grupos semelhantes (Inspiron® versus outros stents) em relação às características clínicas e do procedimento. Todos os testes de hipótese tiveram um nível de significância bilateral de 0,05. Resultados De janeiro de 2017 a janeiro de 2021, 1.711 pacientes foram submetidos à ICP primária, e 1.417 pacientes preencheram nossos critérios de inclusão (709 pacientes no grupo Inspiron® e 708 pacientes no grupo dos outros SF de segunda ou terceira geração). Após PEP, a amostra do estudo foi composta por 706 pacientes (353 pacientes no grupo Inspiron® e 353 pacientes no grupo dos demais SF de segunda ou terceira geração). As taxas de revascularização do vaso alvo (odds ratio [OR] 0,52; intervalo de confiança [IC] 0,21 a 1,34; p = 0,173), trombose de stent (OR 1,00; IC 0,29 a 3,48;p = 1,000), mortalidade (hazard ratio 0,724; IC 0,41 a 1,27; p = 0,257) e os desfechos cardiovasculares maiores (OR 1,170; IC 0,77 a 1,77; p = 0,526) foram semelhantes entre os grupos após um acompanhamento mediano de 17 meses. Conclusão Nossos achados mostram que o stent Inspiron® foi eficaz e seguro quando comparado a outros SF de segunda ou terceira geração em uma coorte contemporânea do mundo real de pacientes com IAMCSST submetidos à ICP primária.

Abstract Background The current gold standard of coronary drug-eluting stents (DES) consists of metal alloys with thinner struts and bioresorbable polymers. Objectives Our aim was to compare an ultrathin strut, sirolimus-eluting stent (Inspiron®) with other third-generation DES platforms in patients with ST-elevation myocardial infarction (STEMI) submitted to primary percutaneous coronary intervention (PCI). Methods We analyzed data from a STEMI multicenter registry from reference centers in the South Region of Brazil. All patients were submitted to primary PCI, either with Inspiron® or other second- or third-generation DES. Propensity score matching (PSM) was computed to generate similar groups (Inspiron® versus other stents) in relation to clinical and procedural characteristics. All hypothesis tests had a two-sided significance level of 0.05. Results From January 2017 to January 2021, 1711 patients underwent primary PCI, and 1417 patients met our entry criteria (709 patients in the Inspiron® group and 708 patients in the other second- or third-generation DES group). After PSM, the study sample was comprised of 706 patients (353 patients in the Inspiron® group and 353 patients in the other the other second- or third-generation DES group). The rates of target vessel revascularization (OR 0.52, CI 0.21 - 1.34, p = 0.173), stent thrombosis (OR 1.00, CI 0.29 - 3.48, p = 1.000), mortality (HR 0.724, CI 0.41 - 1.27, p = 0.257), and major cardiovascular outcomes (OR 1.170, CI 0.77 - 1.77, p = 0.526) were similar between groups after a median follow-up of 17 months. Conclusion Our findings show that Inspiron® was effective and safe when compared to other second- or third-generation DES in a contemporary cohort of real-world STEMI patients submitted to primary PCI.

Trombose venosa profunda de veia ilíaca contralateral após stent venoso posicionado na confluência ilíaco-cava: um desafio terapêutico / Deep venous thrombosis of the contralateral iliac vein after stenting of the iliocaval confluence: a therapeutic challenge

Resumo O tratamento de escolha para pacientes com síndrome de compressão venosa sintomática é o implante de stent venoso. Entretanto, esse tratamento possui complicações bem documentadas e, embora rara, trombose venosa profunda contralateral é uma dessas complicações. Nosso objetivo é apresentar um caso de trombose venosa profunda da veia ilíaca contralateral como resultado do posicionamento do stent além do preconizado e o desafio terapêutico que é a recanalização da veia com reconstrução da confluência ilíaco-cava.

Abstract The treatment of choice for patients with symptomatic venous compression syndrome is venous stenting. However, this treatment has well-documented complications and, although rare, contralateral deep venous thrombosis is one of these complications. Our objective is to present a case of deep venous thrombosis of the contralateral iliac vein resulting from placement of the stent beyond the recommended position and the therapeutic challenge is to recanalize the vein with reconstruction of the iliocaval confluence.

Eficácia da Hidratação Oral na Prevenção da Nefropatia Induzida por Contraste em Indivíduos Submetidos a Intervenções Coronárias Eletivas / Effectiveness of Oral Hydration in Preventing Contrast-Induced Nephropathy in Individuals Undergoing Elective Coronary Interventions

Resumo Fundamento A nefropatia induzida por contraste (NIC) é definida como deterioração da função renal, representada por um aumento da creatinina sérica ≥25% ou ≥0,5 mg/dL até 72 horas após a exposição ao meio de contraste iodado (MCI). A medida preventiva mais eficaz até o momento é a hidratação venosa (HV). Pouco se sabe sobre a eficácia da hidratação oral (HO) ambulatorial. Objetivo Investigar se a HO ambulatorial com água é tão eficaz quanto a HV com solução salina a 0,9% na prevenção de NIC em procedimentos coronarianos eletivos. Métodos Neste estudo observacional retrospectivo, foram analisados prontuários médicos e dados laboratoriais para coletar dados de indivíduos submetidos a procedimentos coronarianos percutâneos com MCI. Os dados coletados entre 2012 e 2015 avaliaram indivíduos que foram submetidos à HV e entre 2016 e 2020 (após a implementação de um protocolo de HO), os indivíduos que foram submetidos à HO em casa antes e depois de procedimentos coronarianos, conforme orientação da equipe de enfermagem. A significância estatística adotada foi de α=0,05. Resultados No total, 116 pacientes foram incluídos neste estudo, 58 no grupo HV e 58 no grupo HO. Observou-se incidência de NIC de 15% (9/58) no grupo que recebeu HV e 12% (7/58) no grupo que recebeu HO (p=0,68). Conclusão O protocolo de HO realizado pelo paciente parece ser tão eficaz quanto o protocolo de HV hospitalar na proteção renal de indivíduos suscetíveis a desenvolver NIC em intervenções coronarianas eletivas. Essas descobertas devem ser testadas em ensaios mais abrangentes.

Abstract Background Contrast-induced nephropathy (CIN) is defined as worsening renal function, represented by an increase in serum creatinine of ≥ 25% or ≥ 0.5 mg/dL up to 72 h after exposure to iodinated contrast medium (ICM). The most effective preventive measure to date is intravenous hydration (IVH). Little is known about the effectiveness of outpatient oral hydration (OH). Objetive To investigate whether outpatient OH with water is as effective as IVH with 0.9% saline solution in preventing CIN in elective coronary procedures. Methods In this retrospective observational study, we analyzed the medical records and laboratory data of individuals undergoing percutaneous coronary procedures with ICM. Data collected between 2012 and 2015 refer to individuals who underwent IVH and those collected between 2016 and 2020 (after implementation of an OH protocol) correspond to individuals who underwent OH at home before and after coronary procedures as instructed by the nursing team. Statistical significance was established at α = 0.05. Results In total, 116 patients were included in this study: 58 in the IVH group and 58 in the OH group. An incidence of CIN of 15% (9/58) was observed in the group that received IVH and an incidence of 12% (7/58) was seen in the group that received OH (p = 0.68). Conclusion The OH protocol, performed by the patient, appears to be as effective as the in-hospital IVH protocol for the renal protection of individuals susceptible to CIN in elective coronary interventions. These findings should be put to test in larger trials.

Tiempos de reperfusión de un programa guiado por telemedicina para la atención del infarto agudo de miocardio con elevación del ST en la Provincia de La Pampa / Reperfusion Times in a Telemedicine-guided Program for the Management of ST-segment Elevation Myocardial Infarction in the Province of La Pampa

RESUMEN Introducción: Los tiempos de atención médica son un factor relevante para la mortalidad por infarto agudo de miocardio con elevación del segmento ST (IAMCEST). Objetivos: Evaluar los tiempos de reperfusión en pacientes con IAMCEST participantes de un programa de atención médica cardiológica basada en telemedicina en la provincia de La Pampa durante el período transcurrido entre agosto de 2018 y diciembre de 2021. Material y Métodos: Este programa consiste en la protocolización de la atención de los pacientes que cursan un síndrome coronario agudo (SCA) en las diferentes localidades de la provincia, con asistencia cardiológica remota las 24 horas del día, que incluye tanto la asistencia diagnóstica como la coordinación de las medidas terapéuticas, incluyendo la posibilidad de administrar trombolíticos a nivel local, con asistencia remota. Resultados: De un total de 72 IAMCEST evaluados, 44 recibieron como terapia de reperfusión trombolisis, 25 angioplastia primaria, y 3 trombolisis seguida de angioplastia de rescate. De los 47 sujetos que recibieron trombolisis, sólo 5 requirieron de traslado al centro de referencia para realizar este procedimiento. La mediana de tiempo puerta-aguja fue de 24 minutos y el tiempo puerta-balón fue de 105 minutos. El 28% de los sujetos con angioplastia primaria tuvieron un tiempo puerta-balón inferior a los 90 minutos y el 53,2% de los tratados con trombolíticos cumplieron con un tiempo puerta-aguja menor a 30 minutos. Conclusiones: La implementación de un programa de atención descentralizada guiada por telemedicina se asoció a un elevado porcentaje de cumplimento de las metas de implementación de la terapia de reperfusión basada en fibrinolíticos.

ABSTRACT Background: Timing of medical care is a relevant factor for ST-segment elevation myocardial infarction (STEMI) mortality. Objectives: The aim of the present study is to evaluate reperfusion times in STEMI patients participating in a telemedicinebased cardiology care program in the province of La Pampa during the period between August 2018 and December 2021. Methods: This program consists of a protocol for the management of patients with acute coronary syndrome (ACS) in the different locations of the province, with 24-hour remote assistance provided by cardiologists including both diagnostic support and coordination of on-site thrombolysis. Results: Of a total of 72 STEMI patients evaluated, 44 received thrombolysis as reperfusion therapy, 25 received primary percutaneous coronary intervention, and 3 received thrombolysis followed by rescue percutaneous coronary intervention. Of the 47 subjects who received thrombolysis, only 5 required to be transferred to the referral center for this procedure. Median door-to-needle time was 24 minutes and door-to balloon-time was 105 minutes. Twenty-five percent of the subjects had a door-to-balloon time <90 minutes and 53.2% fulfilled a door-to-needle time <30 minutes. Conclusions: The implementation of a telemedicine-guided program for decentralized management of STEMI patients was associated with a high percentage of compliance with the goals of implementing fibrinolytic-based reperfusion therapy.

Angioplastia simple de arteria tibial posterior en paciente diabético para el salvamento de la extremidad / Posterior tibial artery simple angioplasty in diabetic patient for limb salvage

Introducción: La diabetes mellitus constituye un factor de riesgo distintivo en la enfermedad arterial periférica. Esta produce típicamente la afectación de los vasos infrageniculares, asociada con mayor predisposición a ulceración y amputación que en pacientes no diabéticos. Debido al desenlace sombrío de estos pacientes es necesario revascularizar con el fin de salvar la extremidad. Objetivo: Presentar un caso en el que se utilizó la angioplastia simple de la arteria tibial posterior para salvar la extremidad de un paciente diabético. Presentación del caso: Se presenta un caso con diagnóstico de pie diabético isquémico infectado en la extremidad inferior izquierda. Al examen físico se constató lesión isquémica infectada en el quinto y cuarto dedos con extensión al dorso y planta del pie, y patrón esteno-oclusivo distal. Se detectó disminución de los índices de presiones distales. En la arteriografía se apreció oclusión de las arterias tibial anterior y peronea desde su origen, y lesiones esteno-oclusivas en la tibial posterior en el tercio inferior de la pierna. Se realizó angioplastia transluminal percutánea de la tibial posterior y el paciente recuperó pulso en tibial posterior con mejoría hemodinámica. Evolucionó satisfactoriamente y egresó con tratamiento médico. A los cinco meses de operado mantenía su pulso tibial posterior presente y la lesión cicatrizada. Conclusiones: La angioplastia simple de una de las arterias de la pierna puede resultar beneficiosa para la cicatrización de lesiones en el pie, aun siendo estas extensas(AU)

Introduction: Diabetes mellitus is a distinctive risk factor in peripheral artery disease. This typically produces the involvement of the infragenicular vessels, associated with a greater predisposition to ulceration and amputation than in non-diabetic patients. Due to the bleak outcome of these patients it is necessary to revascularize in order to save the limb. Objective: To present a case in which simple angioplasty of the posterior tibial artery was used to save the limb of a diabetic patient. Case Presentation: It is presented a case with a diagnosis of infected ischemic diabetic foot in the left lower extremity. On physical examination, infected ischemic lesion was found in the fifth and fourth toes with extension to the back and soles of the foot, and distal steno-occlusive pattern. Decreases in distal pressure indices were detected. Arteriography showed occlusion of the anterior tibial and peroneal arteries from their origin, and steno-occlusive lesions in the posterior tibial in the lower third of the leg. Percutaneous transluminal angioplasty of the posterior tibial was performed and the patient recovered pulse in the posterior tibial with hemodynamic improvement. The patient progressed satisfactorily and was discharged with medical treatment. Five months after surgery, the kept posterior tibial pulse present and the injury healed. Conclusions: Simple angioplasty of one of the arteries of the leg can be beneficial for the healing of foot injuries, even if these are extensive(AU)

Effect of the Implementation of Interdisciplinary Discharge Planning on Treatment Adherence and Readmission in Patients Undergoing Coronary Artery Angioplasty / Efecto de la implementación de la planificación interdisciplinaria del alta en la adherencia al tratamiento y el reingreso en pacientes sometidos a angioplastia de la arteria coronaria / Efeito da implantação do planejamento de alta interdisciplinar na adesão ao tratamento e readmissão em pacientes submetidos à angioplastia coronariana

Objective. To determine the effect of interdisciplinary discharge planning on treatment adherence and readmission in the patients undergoing coronary artery angioplasty in the south of Iran in 2020. Methods. This experimental study had an intervention group and a control group with pre-test and post-test. 70 patients participated in the study who were randomly divided into the groups (intervention group (n=35) and control group (n=35)). In the intervention group, discharge planning was performed based on an interdisciplinary approach. Treatment adherence before, immediately, and one month after the intervention was evaluated with a 10-question survey scored from 1 to 5 (maximum score = 50), as well as readmission three months after the discharge was examined in both groups. Results. Before the intervention, there was no statistically significant difference between the intervention and the control groups in the treatment adherence score (18.22 versus 17.37; p=0.84) but immediately and one month after the intervention statistically significant differences between the groups were showed (21.51 versus 46.14 and 23.28 versus 43.12, respectively; p<0.001). Within three months after discharge, the readmission rate was 11.4% in the control group, while no readmission was reported in the intervention group. Within three months after discharge, the readmission rate was 11.4% in the control group, while no readmission was reported in the intervention group. Conclusion. The implementation of interdisciplinary discharge planning had positive effects on treatment adherence and readmission rate in patients undergoing coronary artery angioplasty; therefore, it is suggested that health care system managers make the necessary plans to institutionalize this new educational approach for other patients discharge planning

Objetivo. Determinar el efecto de la planificación interdisciplinaria del alta en la adherencia al tratamiento y el reingreso en los pacientes sometidos a angioplastia de la arteria coronaria en el sur de Irán en 2020. Métodos. Este estudio experimental contó con un grupo de intervención y un grupo de control con evaluación pre-test y post-test. Participaron en el estudio 70 pacientes que se dividieron aleatoriamente en los grupos. En el grupo de intervención, la planificación del alta se realizó sobre la base de un enfoque interdisciplinario. En ambos grupos se examinó la adherencia al tratamiento antes, inmediatamente y un mes después de la intervención con una encuesta de 10 preguntas puntuadas de 1 a 5 (máximo puntaje = 50), así como el reingreso hasta tres meses después del alta. Resultados. Antes de la intervención, no hubo diferencias estadísticamente significativas entre el grupo de intervención y el de control en la puntuación de la adherencia al tratamiento (18.22 versus 17.37; p=0.84), pero inmediatamente y un mes después de la intervención los grupos mostraron una diferencia estadísticamente significativa (21.51 versus 46.14 y 23.28 versus. 43.12, respectivamente; p<0.001). A los tres meses del alta, la tasa de reingreso fue del 11.4% en el grupo de control, mientras que no se registró ningún reingreso en el grupo de intervención. Conclusión. La aplicación de la planificación interdisciplinaria del alta tuvo efectos positivos la adherencia del tratamiento y la tasa de reingreso en los pacientes sometidos a angioplastia de las arterias coronarias; por lo tanto, se sugiere que los gestores del sistema sanitario hagan los planes necesarios para institucionalizar este nuevo enfoque educativo para la planificación del alta de otros pacientes

Objetivo. Determinar o efeito do planejamento de alta interdisciplinar na adesão ao tratamento e readmissão em pacientes submetidos à angioplastia de artéria coronária no sul do Irã em 2020. Métodos. Este estudo experimental contou com um grupo intervenção e um grupo controle com avaliação pré-teste e pós-teste. Participaram do estudo 70 pacientes que foram divididos aleatoriamente em grupos. No grupo intervenção, o planejamento da alta foi realizado com base na abordagem interdisciplinar. Em ambos os grupos, a adesão ao tratamento foi examinada antes, imediatamente e um mês após a intervenção com um questionário de 10 questões pontuadas de 1 a 5 (pontuação máxima = 50), bem como a readmissão até três meses após a alta. Resultados. Antes da intervenção, não houve diferenças estatisticamente significativas entre os grupos intervenção e controle na pontuação de adesão ao tratamento (18.22 vr. 17.37; p = 0.84), mas imediatamente e um mês após a intervenção os grupos apresentaram diferença estatisticamente significativa (21.51 vr. 46.14 e 23.28 vr. 43.12, respectivamente; p <0.001). Aos três meses após a alta, a taxa de readmissão foi de 11.4% no grupo de controle, enquanto nenhuma readmissão foi registrada no grupo de intervenção. Conclusão. A aplicação do planejamento de alta interdisciplinar teve efeitos positivos na adesão ao tratamento e na taxa de readmissão em pacientes submetidos à angioplastia de artéria coronária; portanto, sugere-se que os gestores do sistema de saúde façam os planos necessários para institucionalizar essa nova abordagem educativa para o planejamento da alta de outros pacientes

The effect of mobile application-based technology use on medication compliance and modification of risk factors in post PTCA cohort of patients

Mobile application-based technology was used to study medication compliance and influence on cardiovascular lifestyle in ischemic heart disease (IHD) patients who undergo percutaneous transluminal coronary angioplasty (PTCA). The Mobile-app was made available at Google play store; the app was downloaded and instructions to use were thought to patients by the research team during hospitalization in the study group. A total of two hundred patients with ischemic heart disease who underwent PTCA were enrolled into the study. The control group had telephonic follow up at periodic interval. Both groups had clinical follow ups at appropriate time intervals. Higher medication compliance, smaller number of adverse events and regular follow ups were significantly more in mobile-app group than in control group.

Safety and efficacy of arteriovenous fistula angioplasties performed by nephrologists: report from a Brazilian interventional nephrology center / Segurança e eficácia de angioplastias de fístulas arteriovenosas realizadas por nefrologistas: relato de um centro de nefrologia intervencionista brasileiro

ABSTRACT Introduction: Arteriovenous fistulas (AVF) are the first choice vascular access for hemodialysis. However, they present a high incidence of venous stenosis leading to thrombosis. Although training in interventional nephrology may improve accessibility for treatment of venous stenosis, there is limited data on the safety and efficacy of this approach performed by trained nephrologists in low-income and developing countries. Methods: This study presents the retrospective results of AVF angioplasties performed by trained nephrologists in a Brazilian outpatient interventional nephrology center. The primary outcome was technical success rate (completion of the procedure with angioplasty of all stenoses) and secondary outcomes were complication rates and overall AVF patency. Findings: Two hundred fifty-six angioplasties were performed in 160 AVF. The technical success rate was 88.77% and the main cause of technical failure was venous occlusion (10%). The incidence of complications was 13.67%, with only one patient needing hospitalization and four accesses lost due to the presence of hematomas and/or thrombosis. Grade 1 hematomas were the most frequent complication (8.2%). The overall patency found was 88.2 and 80.9% at 180 and 360 days after the procedure, respectively. Conclusion: Our findings suggest that AVF angioplasty performed by trained nephrologists has acceptable success rates and patency, with a low incidence of major complications as well as a low need for hospitalization.

RESUMO Introdução: As fístulas arteriovenosas (FAV) são a primeira escolha de acesso vascular para hemodiálise. No entanto, elas apresentam uma alta incidência de estenoses venosas levando à trombose. Embora o treinamento em nefrologia intervencionista possa melhorar a acessibilidade para o tratamento das estenoses venosas, há dados limitados sobre a segurança e a eficácia desta abordagem realizada por nefrologistas treinados em países em desenvolvimento e de baixa renda. Métodos: Este estudo apresenta os resultados retrospectivos de angioplastias de FAV realizadas por nefrologistas treinados em um centro ambulatorial brasileiro de nefrologia intervencionista. O desfecho primário foi a taxa de sucesso técnico (conclusão do procedimento com angioplastia de todas as estenoses) e os desfechos secundários foram taxas de complicação e a patência geral das FAV. Achados: Duzentas e cinquenta e seis angioplastias foram realizadas em 160 FAV. A taxa de sucesso técnico foi de 88,77% e a principal causa de falha técnica foi a oclusão venosa (10%). A incidência de complicações foi de 13,67%, com apenas um paciente necessitando de internação e quatro acessos perdidos devido à presença de hematomas e/ou trombose. Hematomas de grau 1 foram a complicação mais frequente (8,2%). A patência geral encontrada foi de 88,2 e 80,9% a 180 e 360 dias após o procedimento, respectivamente. Conclusão: Nossos achados sugerem que a angioplastia de FAV realizada por nefrologistas treinados tem taxas de sucesso e patência aceitáveis, com uma baixa incidência de complicações maiores, bem como uma baixa necessidade de hospitalização.

Clinical-epidemiological profile of health users who have undergone a Percutaneous Coronary Intervention / Perfil clínico-epidemiológico de usuários de saúde submetidos à Intervenção Coronária Percutânea

Background: Coronary artery disease represents the condition with the highest prevalence worldwide. The treatment of this disease is through Percutaneous Coronary Intervention (PCI). Aiming: To outline the clinical epidemiological profile of health users who have undergone PCI, in a Hospital in the state of Rio Grande do Sul. Methods: Exploratory research, with a quantitative approach carried out on 188 medical records of health users who were submitted to elective or emergency PCI, with the use of stents or not in the year 2018. Values of p <0.05 represented significant statistical differences. Results: Users with a diagnosis of unstable angina (n = 16; 17.8%), diagnostic symptoms of unstable angina (n = 61; 67.8%) and a diagnosis of angina pectoris (n = 52; 57.8%) presented significantly more likely to be submitted to the PCI in elective way (p <0.001). Users diagnosed with Acute Myocardial Infarction - AMI (n = 59; 60.2%) and symptoms with evolution greater than 24 hours (n = 30; 30.6%) and less than 24 hours (n = 24; 24.5%), with dyslipidemia (n = 38; 38.8%) and who underwent catheterization on the same day (n = 87; 88.8%) are significantly more likely to perform emergency surgery (p <0.05). In addition, the data showed that the diagnosis of unstable angina potentiates new cardiomyopathies (n = 9, 47.4%; p <0.001) and restenosis (n = 5; 26.3%; p = 0.002). Conclusion: It is necessary to create strategies to strengthen the Health Care Network (HCN) with actions for prevention, promotion and rehabilitation to health, aiming quality in diagnosis, treatment and rehabilitation.

ntrodução: A doença arterial coronariana representa a afecção de maior prevalência mundial. O tratamento desta doença se dá pela intervenção coronária percutânea (ICP). Objetivo: Delinear o perfil clínico-epidemiológico dos usuários de saúde submetidos à ICP em um Hospital do estado do Rio Grande do Sul. Métodos: Pesquisa exploratória, de abordagem quantitativa realizada em 188 prontuários de usuários de saúde submetidos à ICP eletiva ou de urgência com uso de stent ou não no ano de 2018. Valores de p< 0,05 representaram diferenças estatísticas significativas. Resultados: Usuários com diagnóstico de angina instável (n=16; 17,8%), sintomas diagnósticos de angina instável (n= 61; 67,8%) e diagnóstico de angina pectoris (n=52; 57,8%) apresentaram significativamente maior probabilidade de serem submetidos à ICP em caráter eletivo (p<0,001). Usuários com diagnóstico para infarto agudo do miocárdio (n=59; 60,2%) e sintomatologia com evolução maior que 24 horas (n=30; 30,6%) e menor que 24 horas (n=24; 24,5%), com dislipidemia (n=38; 38,8%) e que fizeram cateterismo no mesmo dia (n=87; 88,8%) são significativamente mais propensos a realizar cirurgia de urgência (p<0,05). Além disso, os dados evidenciaram que o diagnóstico de angina instável potencializa novas cardiomiopatias (n=9, 47,4%; p<0,001) e reestenose (n=5; 26,3%; p= 0,002). Conclusão: É necessário criar estratégias para fortalecer a Rede de Atenção à Saúde (RAS) com ações de prevenção, promoção e reabilitação à saúde, visando a qualidade no diagnóstico, tratamento e reabilitação.

Door to Balloon Time in St-Segment Elevation Myocardial Infarction (STEMI): A Prospective Study

Background: The most acute manifestation of coronary artery disease is ST-segment elevation myocardial infarction (STEMI) and is associated with mortality and morbidity. In the majority of cases, complete thrombotic occlusion develops from an atherosclerotic plaque in an epicardial coronary vessel is the cause of STEMI. Early diagnosis and immediate reperfusion reduce the risk of post-STEMI complications and heart failure and thereby are the most effective ways to limit myocardial ischemia and infarct size. If primary percutaneous coronary intervention (PCI) cannot be performed within 120 minutes of STEMI diagnosis, fibrinolysis therapy should be administered to dissolve the occluding thrombus and PCI has become the preferred reperfusion strategy in patients with STEMI. Methods: From the emergency section of the hospital in the month of October 2021, 7 adult patients were identified with ST-segment–elevation myocardial infarction undergoing primary percutaneous coronary. We used the framework of regression discontinuity to test for discontinuity at 90 minutes among the included cases. The Door - Balloon as 90 minutes minus the time between hospital arrival and catheterization laboratory arrival -defined as a novel variable. To assess the relationship between remaining Door - Balloon time and access site we have estimated multivariable logistic regression models. Results: The results of primary PTCA in the month of October 2021 were performed in less than 90 minutes without any mortality in 7 patients. Conclusions: Our Data on mortality and morbidity benefits of primary angioplasty shows a 100% decrease in mortality of patients undergoing primary PTCA within 90 minutes as compared to international data which shows a 40% decrease.

Experiencia en angioplastia percutánea de recoartación de aorta en un solo centro. Resultados a corto, medio y largo plazo / Experience in percutaneous angioplasty of aortic recoartation in a single centre. Short, medium and long-term outcomes

Resumen Introducción: La angioplastia con balón es una técnica que ofrece buenos resultados, especialmente en los casos de recoartación tras cirugía correctora. Objetivo: Analizar los resultados de un centro hospitalario a partir de la introducción de la técnica. Método: Se analizaron 73 pacientes con una edad media de 3.3 años; el 74% eran menores de 1 año y el 72.6% estaban por debajo de 10 kg de peso. Todos los pacientes incluidos fueron casos de recoartación tras cirugía correctora. Resultados: Se observó un resultado efectivo en el 93.1% de los casos, con gradiente residual < 20 mmHg. Durante el seguimiento, el 20.5% precisaron reintervención, la cual fue más frecuente en caso de angioplastia sobre el arco, lesiones asociadas y menores de 1 año. Solo se objetivó una complicación grave relacionada con el procedimiento, que correspondió a una rotura aórtica que no pudo ser solventada con implante de stent cubierto. Conclusiones: La angioplastia percutánea de recoartación de aorta es una técnica segura y efectiva, en especial en los casos de recoartación tras cirugía correctora de lesiones circunscritas al istmo.

Abstract Introduction: Balloon angioplasty is a technique with good outcomes, specially in cases aortic recoartation after correcting surgery. Objective: To analyze our centre results since the introduction of the technique. Method: We analyzed 73 patients with medium age of 3,3 years; 74% were under 1 years old and 72,6% under 10 kg weight. All patients included were cases of recoartation after surgery. Results: Effective results was achieved in 93,1%, obtaining residual gradient less than 20 mmHg. During the following up 20,5% of patients required reintervention, being more frequent in case of aortic arch hypoplasia, associated lesions or patients under 1 year. Only a severe complication was referred, a case of aortic rupture that couldn’t be solved with a covered stent. Conclusions: Percutaneous angioplasty of aortic recoartation is a safe and effective technique, specially in discrete istmic lesions after correcting surgery.

Acute Myocardial Infarction and Percutaneous Coronary Intervention: What does the Epidemiological Data of the Last Years Indicate?

Abstract Background: ST-segment elevation acute myocardial infarction (STEMI) is a pathological process that involves cardiac muscle tissue death. Intravenous thrombolysis with fibrinolytics or primary percutaneous coronary intervention (PCI), an invasive technique, can be performed for tissue revascularization. PCI has been preferred as compared to non-invasive methods, although few studies have described its use in Brazil. Objectives: The aim of the present study was to analyze data on the use of primary PCI and investigate the relevance of hospitalizations for the treatment of STEMI in the country. Methods: A descriptive, cross-sectional analysis of data from the Brazilian Unified Health system (SUS) Department of Informatics (DATASUS) from 2010 to 2019 was conducted. Results: Hospitalizations for STEMI represented 0.6% of all hospital admissions in Brazil in the analyzed period, 0.9% of hospital costs, and 2.1% of deaths. The number of hospitalizations due to STEMI was 659,811, and 82,793 for PCIs. Length of hospital stay was 36.0% shorter and mortality rate was 53.3% lower in PCI. The mean cost of PCI was 3.5-fold higher than for treatment of STEMI. Conclusions: Data on hospitalizations for STEMI treatment in Brazil revealed high hospitalization and mortality rates, elevated costs, and long hospital stay. Although primary PCI is a more expensive and less used technique than other methods, it can reduce the length of hospital stay and mortality in the treatment of STEMI.

Using the Casper Stent in Carotid Angioplasty: A Single Center Experience

Objectives To establish the success rate in endovascular internal carotid artery (ICA) stenosis recanalization using the double-layer stent Casper-RX (Microvention, Inc 35 Enterprise, Aliso Viejo, California, United States of America) and to identify the main comorbidities in individuals with ICA stenosis, morphological characteristics of the stenosis, diagnostic methods, intraoperative complications, as well as morbidity and mortality within 30 days of the surgical procedure. Materials and Methods Retrospective analysis of 116 patients undergoing ICA angioplasty with a degree of stenosis > 70% using Casper-RX stenting who underwent this procedure from April 2015 to December 2019. Results Technical success was achieved in 99.1% of the patients. Three of them had postprocedural complications: one transient ischemic attack (TIA) and two puncture site hematomas. A cerebral protection filter was not used in only two procedures, as these consisted of dissection of the carotid. There was satisfactory recanalization and adequate accommodation of the stents in the previously stenosed arteries, with no restenosis in 99.4% of the cases. Conclusion The endovascular treatment of extracranial carotid stenoses using the Casper-RX stent showed good applicability and efficacy. Although only two cases of thromboembolic complications occurred during the procedure, fu

Síndrome de Wellens: o infarto agudo do miocárdio iminente / Wellens Syndrome: impending acute myocardial infarction

A síndrome de Wellens foi descrita em 1982 por Zwaan, Bär e Wellens. No eletrocardiograma, observam-se alterações morfológicas da onda T nas derivações precordiais, sugerindo estenose proximal grave da artéria coronária descendente anterior que representa iminente risco de infarto agudo do miocárdio e/ou morte súbita, com discreta ou nenhuma alteração da troponina sérica. Seu reconhecimento antecipado e a abordagem com reperfusão miocárdica precoce evitam desfechos desfavoráveis. A intervenção coronária percutânea e a revascularização miocárdica cirúrgica são as estratégias mais utilizadas para tratamento. Os autores descrevem dois casos de síndrome de Wellens tipos A e B tratados por diferentes estratégias de reperfusão.

Wellens syndrome was described by Zwaan, Bär and Wellens, in 1982. On the electrocardiogram, T wave morphological alterations are observed in precordial leads, suggesting severe proximal stenosis of the left anterior descending coronary artery and an imminent risk of acute myocardial infarction and/or sudden death, with slight or no alteration in serum troponin. Its early recognition and management with early myocardial reperfusion avoid unfavorable outcomes. Percutaneous coronary intervention and surgical myocardial revascularization are the most used strategies for treatment. The authors describe two cases of types A and B Wellens syndrome treated with different reperfusion strategies.

Clinical-epidemiological profile of health users who have undergone a Percutaneous Coronary Intervention / Perfil clínico-epidemiológico de usuários de saúde submetidos à Intervenção Coronária Percutânea

ABSTRACT: Background: Coronary artery disease represents the condition with the highest prevalence worldwide. The treatment of this disease is through Percutaneous Coronary Intervention (PCI). Aiming: To outline the clinical epidemiological profile of health users who have undergone PCI, in a Hospital in the state of Rio Grande do Sul. Methods: Exploratory research, with a quantitative approach carried out on 188 medical records of health users who were submitted to elective or emergency PCI, with the use of stents or not in the year 2018. Values of p <0.05 represented significant statistical differences. Results: Users with a diagnosis of unstable angina (n = 16; 17.8%), diagnostic symptoms of unstable angina (n = 61; 67.8%) and a diagnosis of angina pectoris (n = 52; 57.8%) presented significantly more likely to be submitted to the PCI in elective way (p <0.001). Users diagnosed with Acute Myocardial Infarction - AMI (n = 59; 60.2%) and symptoms with evolution greater than 24 hours (n = 30; 30.6%) and less than 24 hours (n = 24; 24.5%), with dyslipidemia (n = 38; 38.8%) and who underwent catheterization on the same day (n = 87; 88.8%) are significantly more likely to perform emergency surgery (p <0.05). In addition, the data showed that the diagnosis of unstable angina potentiates new cardiomyopathies (n = 9, 47.4%; p <0.001) and restenosis (n = 5; 26.3%; p = 0.002). Conclusion: It is necessary to create strategies to strengthen the Health Care Network (HCN) with actions for prevention, promotion and rehabilitation to health, aiming quality in diagnosis, treatment and rehabilitation. (AU)

RESUMO: Introdução: A doença arterial coronariana representa a afecção de maior prevalência mundial. O tratamento desta doença se dá pela intervenção coronária percutânea (ICP). Objetivo: Delinear o perfil clínico-epidemiológico dos usuários de saúde submetidos à ICP em um Hospital do estado do Rio Grande do Sul. Métodos: Pesquisa exploratória, de abordagem quantitativa realizada em 188 prontuários de usuários de saúde submetidos à ICP eletiva ou de urgência com uso de stent ou não no ano de 2018. Valores de p< 0,05 representaram diferenças estatísticas significativas. Resultados: Usuários com diagnóstico de angina instável (n=16; 17,8%), sintomas diagnósticos de angina instável (n= 61; 67,8%) e diagnóstico de angina pectoris (n=52; 57,8%) apresentaram significativamente maior probabilidade de serem submetidos à ICP em caráter eletivo (p<0,001). Usuários com diagnóstico para infarto agudo do miocárdio (n=59; 60,2%) e sintomatologia com evolução maior que 24 horas (n=30; 30,6%) e menor que 24 horas (n=24; 24,5%), com dislipidemia (n=38; 38,8%) e que fizeram cateterismo no mesmo dia (n=87; 88,8%) são significativamente mais propensos a realizar cirurgia de urgência (p<0,05). Além disso, os dados evidenciaram que o diagnóstico de angina instável potencializa novas cardiomiopatias (n=9, 47,4%; p<0,001) e reestenose (n=5; 26,3%; p= 0,002). Conclusão: É necessário criar estratégias para fortalecer a Rede de Atenção à Saúde (RAS) com ações de prevenção, promoção e reabilitação à saúde, visando a qualidade no diagnóstico, tratamento e reabilitação. (AU)

Tratamento combinado na dissecção de artéria mesentérica superior: desafio terapêutico / Combination treatment for superior mesenteric artery dissection: therapeutic challenge

Resumo A dissecção da artéria mesentérica superior é uma causa rara de dor abdominal, com quadro clínico variável. Seu diagnóstico é difícil, e não existe consenso sobre suas opções terapêuticas; elas variam em torno de tratamento conservador, correção aberta, endovascular ou combinada. Descrevemos o caso de um homem de 45 anos com dissecção isolada da artéria mesentérica superior, com quadro de dor abdominal persistente após tentativa de tratamento conservador. Ele foi submetido à revascularização cirúrgica aberta devido à localização e complexidade da dissecção. O tratamento com endarterectomia, arterioplastia com remendo de pericárdio bovino e acesso retrógrado para abertura da mesentérica com stent foi realizado com sucesso. A angina abdominal foi totalmente resolvida após estabilização do quadro. A combinação de abordagem aberta e endovascular deve ser considerada como terapia para casos de dissecção complexa isolada da artéria mesentérica superior.

Abstract Dissection of the superior mesenteric artery is a rare cause of abdominal pain, with a variable clinical picture. It is difficult to diagnose and there is no consensus on treatment options, which range from conservative treatment to open, endovascular, or combination repair. We describe the case of a 45-year-old man with isolated dissection of the superior mesenteric artery and persistent abdominal pain after conservative treatment had been attempted. He underwent open surgical revascularization due to the location and complexity of the dissection. Treatment consisting of endarterectomy, arterioplasty with bovine pericardium patch, and retrograde access to open the mesenteric artery with a stent was successful. Abdominal angina was completely resolved after the condition had stabilized. A combination of open and endovascular approaches should be considered as treatment for cases of isolated complex dissection of the superior mesenteric artery.

Tratamento endovascular de doença oclusiva venosa central com fístula arteriovenosa funcionante / Endovascular treatment of central vein occlusion in patients with functioning arteriovenous fistulas

Resumo Contexto A maior sobrevida dos doentes dialíticos somada à incapacidade de obtenção de órgãos suficientes para atender a demanda, bem como à dificuldade de acesso aos serviços de saúde, levou ao aumento da fila para transplante e ao prolongamento do tempo de utilização do acesso venoso central para hemodiálise. A etiologia mais comum de estenose de veia central é o acesso venoso central prolongado, pelas lesões intimais decorrentes da presença do cateter. Objetivos Avaliar resultados de angioplastia para tratamento de doença oclusiva venosa central com fístula arteriovenosa periférica funcionante. Métodos Estudo tipo coorte retrospectivo com revisão de prontuários de 47 doentes com lesões estenóticas ou oclusivas. A avaliação dos doentes foi realizada em 30 dias, 6 meses e 1 ano após a recanalização ou correção da estenose com ATP ou ATP/aplicação de stent. Resultados Lesões estenóticas foram encontradas em 25 doentes (53%), e oclusões, em 22 (47%) doentes. A angioplastia percutânea transluminal (ATP) com stent foi utilizada em 64% dos doentes, e angioplastia isolada com balão, em 36% deles. A análise de resultados clínicos mostrou elevada taxa de melhora clínica precoce (30 dias) em 82% dos doentes (intervalo de confiança [IC] 71-93%). Após 1 ano de seguimento, a taxa de perviedade primária foi de 57%, e a taxa de perviedade primária assistida foi de 72% (IC 57-84%). Conclusão O tratamento endovascular das estenoses ou oclusões de veia central sugere melhora clínica dos sintomas e taxas adequadas de perviedade no período de 1 ano, apesar da limitação no tamanho amostral.

Abstract Background The increased survival of dialysis patients and the inability to obtain sufficient organs to meet demand for transplantation, compounded by poor access to health services, have caused the transplant waiting lists to grow, extending the time spent using central venous accesses for hemodialysis. The most common etiology of central vein stenosis is prolonged central venous access, due to intimal injuries caused by the presence of the catheter. Objectives To assess the results of angioplasty to treat central vein occlusion in patients with functioning peripheral arteriovenous fistulas. Methods Retrospective cohort study with review of medical records from 47 patients with stenotic or occlusive lesions. Patients were assessed at 30 days, 6 months, and 1 year after recanalization or correction of stenosis with transluminal percutaneous angioplasty (TPA) or TPA/stenting. Results Stenotic lesions were detected in 25 patients (53%) and occlusions were found in 22 (47%) patients. TPA with stenting was used in 64% of patients and balloon angioplasty in isolation was used in 36%. Analysis of clinical results showed a high rate of early clinical improvement (30 days), seen in 82% of patients (confidence interval [CI] 71-93%). After 1 year of follow-up, the primary patency rate was 57% and the assisted primary patency rate was 72% (CI 57-84%). Conclusions Endovascular treatment of central vein stenosis or occlusions suggests clinical improvement of symptoms and adequate rates of patency at 1 year, notwithstanding the limited sample size.