Parietal Focal Block: An Experimental and Electrocardiographic Study

Author:

ALZAMORA-CASTRO V.1,ABUGATTAS RICARDO1,RUBIO CARLOS1,BOURONCLE JOSÉ1,ZAPATA CESAR1,SANTA-MARÍA EDUARDO1,BATTILANA GUIDO1,BINDER TEODORO1,SUBIRÍA RICARDO1,PAREDES DAVID1

Affiliation:

1. From the Heart Laboratory, Hospital Dos de Mayo, University of San Marcos Medical School, Lima, Peru.

Abstract

A method of producing focal ventricular block is described. The sequence of the electrocardiographic variations is ascribed to changes in the velocity and direction of the excitatory process in the ventricular wall. The epicardial electrocardiograms resemble those considered indicative of ventricular hypertrophy or of "incomplete" or of "complete" bundle branch block. When the focal block is pronounced a positive deflection appears in the cavitary tracing. The ventricular blocks can be subdivided into "conduction blocks" and "fiber blocks," the former produced by the delay of the stimulus in the specialized conduction system and the latter produced by the delay of the excitatory process in the ordinary heart muscle.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Physiology (medical),Cardiology and Cardiovascular Medicine

Reference9 articles.

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2. 2ALZAMORA-CASTRO V. ABUGATTAS R. RUBIO C. BATTILANA G. ZAPATA C. BOURONCLE J. SANTA-MARIA E. SUBIRIA R. BINDER T. AND PAREDES D.: El bloqueo intraventricular derecho focal canino. El bloqueo intraventricular derecho humano. Estudio electrocardiogrifico comparative. Rev. Peruana cardiol. 1: 1 1952.

3. 3WILSON F. N. ROSENBAUM F. F. AND JOHNSTON F. D.: Interpretation of the Ventricular Complex of the Electrocardiogram. In: Advances in Internal Medicine. New York Interscience Publishers 1947. Vol. 2.

4. 4ALZAMORA-CASTRO V. BATTILANA G. ABUGATTAS R. RUB10. C.. BOURONCLE J. AND ZAPATA C.: El curso de la excitacion ventricular en el corazon humano cuando la activacion es normal Nr cuando hay bloqueo de conducci 6n derecho. Rev. argent. de car(Iiol. 18: 1 1951. AND SANTA-2MARIA E.: Los

5. hloqueos intraventriculares. An. Fac. med. Lima

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