November 1, 1974Open Access

Apex cardiogram and systolic time intervals in acute myocardial infarction and effects of practolol.

Structured PICO

Does practolol affect systolic time intervals and apex cardiogram parameters in patients with acute myocardial infarction?

Population

41 subjects total: 20 patients with uncomplicated acute myocardial infarction, 6 patients with chest pain without acute myocardial infarction, and 15 normal subjects.

Intervention

Practolol

Comparator

Normal subjects and patients with chest pain without acute myocardial infarction

Outcome

Systolic time intervals and the ratio of the height of the a wave on the apexcardiogram to the total height of the apexcardiographic deflection (a/H)surrogate

The study evaluates systolic time intervals and apex cardiogram parameters in acute myocardial infarction and the effects of practolol.

Abstract

Systolic time intervals and the ratio of the height of the a wave on the apexcardiogram to the total height of the apexcardiographic deflection (a/H) derivedfrom simultaneous electrocardiogram, phonocardiogram, carotid pulse tracing, and apex cardiogram were recorded in 20 patients with uncomplicated acute myocardial in- farction and 6 patients with chest pain without acute myocardial infarction over a period of 5 days. Fifteen normal subjects were investigated on one occasion.

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Cite This Study

Waagstein et al. (Fri,) studied this question.

synapsesocial.com/papers/6a142e492398cfa26a896023 https://doi.org/https://doi.org/10.1136/hrt.36.11.1109

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