HIGH-FIDELITY ELECTROCARDIOGRAMS OF NORMAL RABBITS

Document Type

Article

Publication Date

11-1964

Institution/Department

Cardiology

Journal Title

The American journal of physiology

MeSH Headings

Animals; Electrocardiography; Lagomorpha; Rabbits; Research

Abstract

Normal rabbit electrocardiograms were taken using high sensitivity, recording speed, and frequency response. The signals were recorded on magnetic tape and replayed with a time expansion of 32 to 1. Bipolar and augmented unipolar limb leads and two unipolar chest leads were recorded. Mean values, ranges, and standard deviations for the P, QRS, and T voltages were obtained, as well as mean frontal plane vectors. Similar data for durations were found. The ranges of mean axes were 44° to 86° for P, 55° to 103° for T, and –79° to +156° for QRS. The wide range in ventricular electrical axis may be due to changes in heart position. Notching of P and QRS complexes was due to the high resolution used.

ISSN

0002-9513

Comments

Maine Medical Center Historical Publications

First Page

1107

Last Page

11

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