January 1, 1978Angiology

Isovolumic Relaxation Time in Normal Subjects and Patients With Cardiac Disease: Comparison of Determinations Made With Echocardiographic Techniques and Apex Cardiography

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Why the study?

Does echocardiographic measurement of IVRT differ from apexcardiography in normal subjects and patients with cardiac disease?

Structured PICO

Does echocardiographic measurement of IVRT differ from apexcardiography in normal subjects and patients with cardiac disease?

Population

58 subjects including 17 normal controls and 41 patients with various conditions (9 ischemic heart disease, 7 mitral valve prolapse, 13 hypertension, 7 pregnancy, 5 cardiomyopathy).

Intervention

Echocardiographic measurement of isovolumic relaxation time (from aortic second sound to rapid opening of mitral valve, A2D1)

Comparator

Apexcardiography measurement of isovolumic relaxation time (from aortic second sound to 0 point, A2O)

Outcome

Isovolumic relaxation time (IVRT) durationsurrogate

Echocardiographic measurement of IVRT yields shorter intervals than apexcardiography and can detect prolonged relaxation in patients with myocardial disease.

Discussion

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Implication

Echocardiographic IVRT yields shorter values than apexcardiography; challenges method equivalence and leaves open optimal technique for relaxation assessment.

Cite This Study

Araoye et al. (1978) studied this question.

synapsesocial.com/papers/6a7072ac87f921057127aeca https://doi.org/10.1177/000331977802900102

Topics

Echocardiography Valvular heart disease Hypertension management

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Ask AI

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Implication

Echocardiographic IVRT yields shorter values than apexcardiography; challenges method equivalence and leaves open optimal technique for relaxation assessment.

Isovolumic Relaxation Time in Normal Subjects and Patients With Cardiac Disease: Comparison of Determinations Made With Echocardiographic Techniques and Apex Cardiography

Structured PICO

Discussion

Implication

Cite This Study

Topics

Isovolumic Relaxation Time in Normal Subjects and Patients With Cardiac Disease: Comparison of Determinations Made With Echocardiographic Techniques and Apex Cardiography

Structured PICO

Discussion

Implication

Cite This Study

Also Consider

Topics

Also Consider