Results: 1051

Instrumento virtual para aquisiçäo de sinais bioelétricos
Virtual instrument for acquisition of bioeletrical signals

Neste trabalho é apresentado um instrumento virtual baseado em computador IBM-PC Pentium compatível para aquisição, armazenamento, processamento e análise de sinais eletroencefalográficos, eletroculográficos, eletromiográficos e eletrocardiográficos que amplie o arsenal de ferramentas numéricas...

Assistência circulatória ao coração direito através da contrapulsação pulmonar usando-se um método biológico

Arq. bras. cardiol; 65 (5), 1995
PURPOSE: To study the hemodynamic effects of latissimus dorsi dynamic pulmonaroplasty in open chest animals. METHODS: Six anesthetized mongrel dogs were subjected to diastolic counterpulsation using electrically stimulated latissimus dorsi muscle flap wrapped around the aortic and pulmonary arteries root...

Origem anômala de artéria coronária esquerda. Correção concomitante à substituição valvar por insuficiência mitral

Arq. bras. cardiol; 65 (4), 1995
A four year-old boy with an anomalous origin of the left coronary artery (LCA) directly from the right pulmonary artery was reported. He had been underwent to mitral valve replacement by a St Judes no. 29, due to severe mitral insufficiency, secondary to an extensive myocardial infarction including the a...

Drenagem venosa anômala de pulmão esquerdo. Achados clínicos e cirúrgicos e dificuldades diagnósticas

Arq. bras. cardiol; 65 (4), 1995
PURPOSE: To analyze clinical and surgical aspects of patients with anomalous left pulmonary venous drainage (ALPVD). METHODS: Seven patients, 3 males, with ages ranging from 18 months to 29 years were retrospectively studied, by analyzing the symptoms, electrocardiograms, chest X-ray, echocardiograms, an...

Thyroid dysfunction effect on cardiac stimulation and sensing parameters

We report our findings in a chronic canine study performed to evaluate the effects of thyroid funciton alteration on atrial and ventricular pacing parameters. Each of five dogs with normal, healthy myocardia, received four unipolar Medtronic contempory pacing leads - model 4011 Target Tip and model 4023 ...

Papel do acometimento da artéria coronária circunflexa no infarto do miocárdio sem onda Q

Arq. bras. cardiol; 65 (2), 1995
PURPOSE--To determine the patency and incidence rates of left circumflex coronary artery (LCX) as the infarct related artery (IRA) in Q-wave and non-Q wave acute myocardial infarction (AMI). METHODS--Two-hundreds and twenty one patients (172 men) with AMI were stratified in Q and non-Q waves groups. All ...

Falso diagnóstico de miocardiopatia hipertrófica em feocromocitoma

Arq. bras. cardiol; 65 (2), 1995
A 24 year-old man was admitted with hypertensive crises and diagnosis hypothesis of neurofibromathosis and pheochromocytoma with blood pressure of 150 x 110mmHg and in use of anti-hypertensive drugs. The electrocardiogram (EKG) showed left ventricle hypertrophy. An echocardiogram showed interventricular ...

Efeitos do sotalol sobre o eletrocardiograma de alta resoluçäo avaliados por ensaio duplo-cego cruzado randomizado
Effects of sotalol over signal-averaged electrocardiogram: a randomized double-blind crossover trial

A presente investigaçäo teve por objetivo avaliar os efeitos do Sotalol sobre o eletrocadiograma de alta resoluçäo (ECGAR), em uma populaçäo com arritmia ventricular idiopática. Foi estudado um grupo de 12 pacientes submetidos a um ensaio clínico do tipo duplo-cego cruzado e randomizado, para ava...