1. Bloqueio atrioventricular de segundo grau 3:1 induzido por cateter durante ablação de taquicardia por reentrada nodal atrioventricular / Catheter-induced 3:1 second degree atrioventricular nodal block during atrioventricular nodal reentrant tachycardia

Publicado em: 2010

2. Recognition of imperforate atrioventricular valves by two dimensional echocardiography.

The majority of hearts in which selective right or left atrial angiography shows no direct communication between one atrium and a ventricular chamber are considered to be examples of atresia of the right or left atrioventricular valves. Most patients presenting with the clinical features of tricuspid atresia have an absent right atrioventricular connection,

3. Aspectos da irrigação do nó atrioventricular e tronco do fascículo atrioventricular em bovinos mestiços Girolando

Estudaram-se aspectos da irrigação do nó atrioventricular e tronco do fascículo atrioventricular, componentes do sistema de condução do coração. Para tanto, utilizaram-se trinta corações de bovinos fêmeas, mestiças Girolando, com idade entre 36 e 48 meses. Os mesmos foram dissecados, após prévia injeção das artérias coronárias direita e esq

Brazilian Journal of Veterinary Research and Animal Science. Publicado em: 2003

4. Physiological importance of different atrioventricular intervals to improved exercise performance in patients with dual chamber pacemakers.

To determine the importance of different atrioventricular intervals during exercise in patients with dual chamber pacemakers, seven patients with complete heart block and sinus rhythm were exercised in different pacing modes and atrioventricular intervals: (a) ventricular inhibited (VVI) pacing with no synchronous atrial augmentation or rate responsiveness;

5. Two-dimensional echocardiographic assessment of common atrioventricular valves in univentricular hearts.

Twelve patients with univentricular heart and common atrioventricular valve were identified by two-dimensional echocardiography. Seven had an ostium primum atrial septal defect and five a common atrium. The common atrioventricular valve had the appearance of a free floating anterior leaflet flanked by two lateral leaflets. The position of the rudimentary cha

6. Efeitos da mudança de modo de estimulação ventricular para atrioventricular sobre a qualidade de vida em pacientes com cardiopatia chagásica e bloqueio atrioventricular na troca eletiva do gerador de pulsos

OBJETIVO: Avaliar os efeitos da mudança de modo de estimulação ventricular para atrioventricular sobre a qualidade de vida em pacientes com cardiopatia chagásica e bloqueio atrioventricular, na troca eletiva do gerador de pulsos. MÉTODO: No período de 8 de setembro de 2001 a 18 de março de 2004, no Instituto do Coração da Faculdade de Medicina da Un

Brazilian Journal of Cardiovascular Surgery. Publicado em: 2005-03

7. Relation between atrioventricular pathways and ventricular response during atrial fibrillation and flutter.

We have analysed the ventricular response as seen on the surface electrocardiogram in patients with paroxysmal atrial fibrillation and flutter in relation to the electrophysiological properties of the corresponding atrioventricular pathways. In 15 patients who had atrial fibrillation with conduction solely through the atrioventricular node, there was a signi

8. Pseudo second degree atrioventricular block with bradycardia. Successful treatment with quinidine.

Pseudo second degree atrioventricular block resulting from blocked His premature beats was successfully treated with quinidine. The diagnosis was proved by His bundle electrogam which showed both blocked and conducted His premature beats. The blocked His prematures produced second degree atrioventricular block by making the atrioventricular junction refracto

9. Transvenous high energy shock for ablating atrioventricular conduction in man. Observations on the histological effects.

Transvenous ablation of atrioventricular conduction by high energy shock through a pacing wire has been used as a method of controlling the ventricular response to rapid atrial arrhythmias. A patient in whom this technique successfully controlled refractory tachycardia was admitted with severe left ventricular impairment five months after the procedure and d

10. Identical twins with differing forms of ventricular pre-excitation.

Identical 10-year-old twins, both with electrocardiograms showing a short PR interval and a normal QRS complex but with dramatically different electrophysiological characteristics, are described. One twin experienced episodes of rapid palpitation and on one occasion was resuscitated from ventricular fibrillation. An intracardiac electrophysiological study co

11. Disopyramide induced second and third degree atrioventricular block in patients with bifascicular block. An acute stress test to predict atrioventricular block progression.

Syncopal attacks in patients with bifascicular block may be due to both ventricular tachyarrhythmias and intermittent atrioventricular block in addition to non-cardiac causes and lead to antiarrhythmic treatment with drugs or pacemaker or both. The acute electrophysiological effect of intravenous disopyramide 2 mg/kg body weight given over five minutes on th

12. Effect of nifedipine on atrioventricular conduction as compared with verapamil. Intracardiac electrophysiological study.

Intravenous nifedipine, a powerful calcium antagonist, had no obvious effect on atrioventricular conduction when administered to 11 patients during routine intracardiac electrophysiological studies. Verapamil on the other hand showed potent antiarrhythmic properties, depressing atrioventricular nodal conduction. Nifedipine thus appears safe in patients with