October 1, 1983Australian and New Zealand Journal of Medicine
M‐MODE ECHOCARDIOGRAPHY: REPRODUCIBILITY OF SERIAL LEFT VENTRICULAR MEASUREMENTS IN SUBJECTS WITH NORMAL VENTRICLES and PATIENTS WITH CONGESTIVE CARDIOMYOPATHY
Why the study?
Does serial M-mode echocardiography provide reproducible measurements of left ventricular dimensions in normal subjects and patients with congestive cardiomyopathy?
Population
20 subjects
Design
Cohort
Follow-up
3 weeks
Authors
Discussion
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Member takes
Implication
Supports group-level M-mode echo reproducibility in cardiomyopathy; leaves open suitability for individual patient monitoring.
Structured PICO
Does serial M-mode echocardiography provide reproducible measurements of left ventricular dimensions in normal subjects and patients with congestive cardiomyopathy?
P
Population
20 subjects (n=10 normal subjects and n=10 patients with congestive cardiomyopathy without asynergic wall motion, conduction abnormalities, or arrhythmias)
I
Intervention
Serial M-mode echocardiography (three echocardiograms performed over a period of three weeks)
O
Outcome
Reproducibility (mean coefficients of variation) of diastolic and systolic left ventricular dimensions (LVlDd, LVlDs) and fractional shortening (FS)surrogate
M-mode echocardiography is a reliable technique for serial quantitative studies of left ventricular dimensions in patient groups, but may not be suitable for assessing individual patient responses.
Cite This Study
MacMahon et al. (1983) studied this question.