BLOQUEIO ATRIOVENTRICULAR TOTAL PDF

Related content ABSTRACT Basis: The experimental atrioventricular block is a method of steady and permanent bradycardia induction and it is useful in studies where low cardiac frequency is required. Objective: The aim of the study was to present the results of experimental atrioventricular block in dogs and to observe such block for a long period. Material and Method: Sixty-four domestic dogs weight Electrocardiogram was used during the procedure and for monthly monitoring till animals were sacrificed by deep anesthesia.

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Related content ABSTRACT Basis: The experimental atrioventricular block is a method of steady and permanent bradycardia induction and it is useful in studies where low cardiac frequency is required. Objective: The aim of the study was to present the results of experimental atrioventricular block in dogs and to observe such block for a long period. Material and Method: Sixty-four domestic dogs weight Electrocardiogram was used during the procedure and for monthly monitoring till animals were sacrificed by deep anesthesia.

Twelve animals were followed up for a long period. Results: The atrioventricular block was tried 4. The cardiac frequency was Some animals were observed for up to four years and the average period was a year and 10 months. The anatomopathological changes were necrosis of the upper area of interventricular septum, at the beginning of the procedure; fibrosis and development of cartilaginous tissue, at the end of the experiment.

Conclusion: The technique for experimental atrioventricular block proved to be efficient, easily performable, reproducible and with permanent BAVT for a long period. Keywords: atrioventricular block, experimental block, dog. O eletrocardiograma foi usado durante o procedimento e mensalmente para controle. Doze animais foram seguidos por tempo prolongado. O bloqueio manteve-se por tempo prolongado, permitindo o monitoramento dos animais.

Palavras-chave: BAVT, bloqueio atrioventricular, bloqueio experimental, cao. Os animais foram submetidos a jejum de 12 horas antes da cirurgia. B Bloqueio atrioventricular total.

Figura 3 - Macroscopia da regiao superior do septo interventricular onde foi injetado formol. Figura 4 - Microscopia da regiao superior do septo interventricular onde foi injetado formol. No primeiro grupo, o BAVT pode ser conseguido com ou sem atriotomia.

As primeiras tentativas foram bem sucedidas e o procedimento determinou um BAVT permanente em quase a totalidade dos animais. A necrose e o BAVT sao capazes de determinar arritmias graves como as registradas neste estudo figura 2.

Na literatura pesquisada, os tempos relatados variaram de quatro meses3, 5, 11, 12, 15 a um ano e seis meses On the physiology of heart-block in mammals with especial reference to the causation of Stokes-Adams disease. J Exp Med ; Regional contraction patterns of the left ventricle during ventricular pacing. Epicardial cryioablation of the bundle of His.

An experimental study. The Journal of Thoracic Cardiovascular Surgery ; A simple technique for production of chronic complete heart block in dogs. J Appl Physiol ;25 5 Experimental models of complete heart block.

Basic Res Cardiol ; Atrio-ventricular block produced by ligation of septal arteries in the dog. Jpn Heart J ;6 3 Experimental production of permanent heart block total or bundle branch block without circulatory arrest or extracorporeal circulation. Thorax ; Production of chronic atrioventricular block in dogs without thoracotomy. J Appl Physiol ;21 3 A simple method of producing experimental heart block in dogs.

The Journal of Thoracic Cardiovascular Surgery ;53 5 A study of methods for surgical interruption of the His bundle. The Journal of Thoracic Cardiovascular Surgery ;73 3 Production of chronic heart block in closed-chest dogs: an improve technique.

Am J Physiol ;HH Cryosurgical of the atrioventricular node-His bundle: long-term follow-up and properties of the junctional pacemaker. Circulation ;61 1 Closed-chest electrode-catheter technique for His bundle ablation in dogs. Elective prolongation of atrioventricular conduction by multiple discrete cryolesion. Rev Bras Marcapasso e Arritmia - Reblampa. Cardiac pathology of transvenous pacemakers in dogs. American Heart Journal ;93 1

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Experimental complete heart block in dogs: long-term follow-up.

Netaxe Services on Demand Journal. Long-term prognosis of patients undergoing electrophysiologic studies for syncope of unknown origin. Atenolol use and clinical outcomes after thrombolysis for acute myocardial tarioventricular Um estudo conduzido em Israel por Drory e cols. These effects can lead to intense bradycardia and atrioventricular block, increasing the morbidity and compromising the renal transplantation. Collaborative meta-analysis of randomised trials of antiplatelet therapy for prevention of death, myocardial infarction, and stroke in high risk patients. Emergency surgery after unsuccessful coronary angioplasty: Explaining the decrease in U. National Center for Biotechnology InformationU.

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