Key result
M-mode echocardiographic LV measurements showed excellent reproducibility in short-term studies (mean CV 1.2-3.6%) but higher variability in long-term studies (CV up to 15.5% for hemodynamics).
Why the study?
Is M-mode echocardiographic assessment of left ventricular function reproducible over short and long-term intervals in healthy subjects?
Population
49 healthy subjects divided into 4 groups based on time periods of serial recordings
Design
Cohort
Follow-up
up to 14 to 18 months
Authors
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Reproducibility of serial M-mode LV measurements declines over longer intervals; leaves open optimal standardization for clinical use.
Observational (n=49)
Is M-mode echocardiographic assessment of left ventricular function reproducible over short and long-term intervals in healthy subjects?
M-mode echocardiography provides excellent reproducibility for basic LV measurements in short-term studies, but its use for assessing changes in cardiac volumes and hemodynamics should be restricted to short-term intervals.
Markku Kupari (1984) conducted an observational in Healthy subjects (n=49). M-mode echocardiography vs. Different time intervals (short-term vs long-term) was evaluated on Reproducibility (coefficient of variation) of left ventricular transverse dimensions and performance. M-mode echocardiographic LV measurements showed excellent reproducibility in short-term studies (mean CV 1.2-3.6%) but higher variability in long-term studies (CV up to 15.5% for hemodynamics).
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