Why the study?
Does echocardiography provide comparable measurements of systolic time intervals to the conventional technique in patients?
Does echocardiography provide comparable measurements of systolic time intervals to the conventional technique in patients?
This study demonstrates the feasibility of measuring systolic time intervals directly from echocardiograms, showing close agreement with conventional methods.
Echocardiography may offer a feasible alternative for systolic time intervals; leaves open prospective validation before clinical adoption.
A study was performed in which the systolic time intervals of 46 patients were measured directly from echocardiograms of their aortic valve motion. These intervals were compared with those obtained from the same patients by the conventional technique of simultaneously recording the carotid pulse, phonocardiogram and electrocardiogram. Several of the measurements were made simultaneously by the two techniques in order to compare the timing of the systolic cycle. The values obtained by the two techniques were in close agreement, with average deviations of 11% or less. This study demonstrates the feasibility of measuring systolic time intervals directly from echocardiograms.
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Vredevoe et al. (1974) studied this question.
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