The immediate effect of sildenafil on right ventricular function in patients with heart failure measured by cardiac magnetic resonance: a randomized control trial.

BACKGROUND: Studies have demonstrated that phosphodiesterase 5 (PDE5) inhibition is associated with right ventricle (RV) functional improvement in patients with primary pulmonary hypertension. This study aims to demonstrate the immediate impact of Sildenafil, a PDE5 inhibitor, on RV function, measured by cardiovascular magnetic resonance (CMR), in patients with heart failure (HF). METHODS: We conducted a randomized double-blind controlled trial. INCLUSION CRITERIA: diagnosis of HF functional class I-III; left ventricle ejection fraction < 35%. Patients underwent CMR evaluation and were then equally randomly assigned to either 50 mg of Sildenafil or Placebo groups. One hour following drug administration, they were submitted to a second scan examination. RESULTS: 26 patients were recruited from a tertiary reference center in Brazil and 13 were allocated to each study group. The median age was 61.5 years (50-66.5 years). Except for the increase in RV fractional area change following the administration of sildenafil (Sildenafil [before vs. after]: 34.3 [25.2-43.6]% vs. 42.9 [28.5-46.7]%, p = 0.04; Placebo [before vs. after]: 28.1 [9.2-34.8]% vs. 29.2 [22.5-38.8]%, p = 0.86), there was no statistically significant change in parameters. There was no improvement in left ventricular parameters or in the fractional area change of the pulmonary artery. CONCLUSION: This study demonstrated that a single dose of Sildenafil did not significantly improve RV function as measured by the CMR. TRIAL REGISTRATION: ClinicalTrials.gov NCT01936350.

A influência da escolha da prótese valvar sobre a mortalidade intra-hospitalar no pós-operatório em pacientes submetidos à cirurgia valvar / Influence of valve prosthesis type on early mortality in patients undergoing valve surgery

Objetivo: Avaliar a influência do tipo de prótese na mortalidade intra-hospitalar no período de pós-operatório imediato nos pacientes que fizeram substituição de válvula. Métodos: Estudo transversal, em que dados, como sexo, origem, idade, etiologia, dados ecocardiográficos, o tipo de cirurgia realizada e da prótese utilizada em casos de substituição de válvula foram analisadas r etrospectivamente. Resultados: Foram revisados 353 prontuários de pacientes que realizaram cirurgia de troca valvar. A idade média foi de 41,87±17,9 anos. Em relação ao gênero, 52,8% eram do sexo feminino. Quanto à origem, 61,1% vieram de cidades do interior do estado. Do total de pacientes, 58,5% eram portadores da doença reumática. Avaliando o tipo de prótese implantada, 70% realizou troca por bioprótese e 30% metálica. A mortalidade hospitalar desse estudo foi de 11%, não havendo diferença significativa entre o tipo de prótese utilizada. Conclusão: O tipo de prótese utilizada não influenciou na mortalidade intra-hospitalar. .

Objective: To evaluate the influence of the type of prosthesis in-hospital mortality in the post-operative period in patients who had valve replacement. Methods: A cross-sectional data, such as gender, origin, age, etiology, echocardiograph data, the type of surgery performed and the prosthesis used in cases of valve replacement were analyzed retrospectively. Results: We reviewed 353 charts of patients who underwent valve replacement surgery. The mean age was 41.87±17.9 years. Regarding gender, 52.8% were female. As for the origin, 61.1% came from small cities within the state. Of all patients, 58.5% suffered from rheumatic disease. Assessing the type of prosthesis implanted, 70% held replace by bioprosthesis and 30% metallic. The hospital mortality in this study was 11%, with no significant difference between the types of prosthesis utilized. Conclusion: The type of implant used had no effect on in-hospital mortality. .

Influence of valve prosthesis type on early mortality in patients undergoing valve surgery.

OBJECTIVE: To evaluate the influence of the type of prosthesis in-hospital mortality in the post-operative period in patients who had valve replacement. METHODS: A cross-sectional data, such as gender, origin, age, etiology, echocardiograph data, the type of surgery performed and the prosthesis used in cases of valve replacement were analyzed retrospectively. RESULTS: We reviewed 353 charts of patients who underwent valve replacement surgery. The mean age was 41.87±17.9 years. Regarding gender, 52.8% were female. As for the origin, 61.1% came from small cities within the state. Of all patients, 58.5% suffered from rheumatic disease. Assessing the type of prosthesis implanted, 70% held replace by bioprosthesis and 30% metallic. The hospital mortality in this study was 11%, with no significant difference between the types of prosthesis utilized. CONCLUSION: The type of implant used had no effect on in-hospital mortality.

Impact of socio-economic profile on the prosthesis type choice used on heart surgery.

BACKGROUND: Valvar heart disease is an important public health problem, more common in developing countries, especially in younger. OBJECTIVE: To evaluate the epidemiological features of patients and its influence on the prosthesis type choice used on patients who underwent valve surgery. METHODS: Cross-sectional. Data such as age, sex, provenance, surgery procedure and prosthesis type were retrospectively analyzed. We reviewed 366 charts of all patients submitted to heart valve surgery during three years in a public health cardiovascular treatment center. RESULTS: 52% of patients were female. The age range was from 5 to 82, the median was 41 years old. In regards 37.7% of patients came from Salvador (Bahia, Brazil) and 62.3% from countryside. Valve replacement was performed in 73% of patients, whereas 7.38% underwent valvuloplasty and 18.3% underwent valve repair and replacement. Regarding type of prosthesis, 70.0% received bioprosthesis and 30.0% received metal prosthesis. On note bioprosthesis were more used in younger (P<0,001). CONCLUSION: Biological prostheses were used predominantly in younger. This might be possible due to a low social-economic status, avoiding metal valve implantation and the consequent anticoagulation therapy.

Impacto do perfil socioeconômico na escolha da prótese valvar em cirurgia cardíaca / Impact of socio-economic profile on the prosthesis type choice used on heart surgery

INTRODUÇÃO: A doença cardíaca valvar é um grave problema de saúde pública, mais frequente em países em desenvolvimento, acometendo indivíduos em idade laboralmente produtiva. OBJETIVO: Avaliar o perfil socioeconômico e epidemiológico dos pacientes submetidos a cirurgia valvar e a sua relação com os tipos de próteses utilizadas em um centro de referência público de Salvador, BA, Brasil. MÉTODOS: Estudo de corte transversal descritivo de prevalência, no qual foram analisados retrospectivamente idade, sexo, procedência, tipo de valvopatia, cirurgia a qual o paciente foi submetido e o tipo de prótese utilizada em casos de trocas, em centro de referência público de cardiologia. RESULTADOS: Foram revisados 366 prontuários, de todos os pacientes submetidos a cirurgia de valva cardíaca, de janeiro de 2007 a dezembro de 2009. Em relação ao sexo, 52% dos pacientes eram do sexo feminino. A idade média ± DP foi de 41,70 ± 17,85 anos. Dentre os pacientes, 37,7% eram procedentes da capital e 62,3%, do interior do estado da Bahia (Brasil). A troca valvar foi realizada em 73% dos pacientes, enquanto que 7,38% realizaram plastia valvar e 18,3% realizaram tanto plastia quanto troca. Dos pacientes que realizaram troca valvar, 70% receberam bioprótese e 30% do tipo metálica, com predominância do uso bioprótese nas faixas etárias jovens (P<0,001). CONCLUSÃO: Próteses biológicas foram predominantemente usadas em jovens. Esse fato, possivelmente, pode ser atribuído ao baixo nível socioeconômico da população em questão, distância de centros urbanos, dificuldade de realização de exames para controle da anticoagulação e nível educacional ruim, inviabilizando o uso de valva metálica e a consequente terapia anticoagulante.

BACKGROUND: Valvar heart disease is an important public health problem, more common in developing countries, especially in younger. OBJECTIVE: To evaluate the epidemiological features of patients and its influence on the prosthesis type choice used on patients who underwent valve surgery. METHODS: Cross-sectional. Data such as age, sex, provenance, surgery procedure and prosthesis type were retrospectively analyzed. We reviewed 366 charts of all patients submitted to heart valve surgery during three years in a public health cardiovascular treatment center. RESULTS: 52% of patients were female. The age range was from 5 to 82, the median was 41 years old. In regards 37.7% of patients came from Salvador (Bahia, Brazil) and 62.3% from countryside. Valve replacement was performed in 73% of patients, whereas 7.38% underwent valvuloplasty and 18.3% underwent valve repair and replacement. Regarding type of prosthesis, 70.0% received bioprosthesis and 30.0% received metal prosthesis. On note bioprosthesis were more used in younger (P<0,001). CONCLUSION: Biological prostheses were used predominantly in younger. This might be possible due to a low social-economic status, avoiding metal valve implantation and the consequent anticoagulation therapy.

Mitral valve regurgitation: paradoxical behavior of dobutamine stress cardiac magnetic resonance imaging.

A 62-year-old woman with mitral regurgitation (MR) underwent cardiac magnetic resonance (CMR) and dobutamine stress CMR imaging, a widely used method to analyze left ventricular function and MR volumes. During dobutamine provocation at escalating doses, the left ventricular end-diastolic diameter (LVEDD) decreased, with a corresponding decrease in MR. At peak dobutamine dose, the LVEDD further decreased, with near complete relief of MR. Upon cessation of dobutamine provocation, the MR returned to predobutamine level. This case thereby demonstrates that MR may be reversible under certain conditions.