Key result
Cardiac auscultation relies on the observer's hearing acuity, timing, and tonal appreciation to detect complex transient noises that are often near the lower limits of audibility.
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Observer-dependent auscultation may limit reproducibility; leaves open phonocardiography's role pending prospective validation.
A SCULTATION of the heart is an art in which the conclusions of the observer depend upon acuity of hearing, sense of timing, and appreciation of tonal quality of complex transient noises. These noises are often near the lower limit of audibility in respect to intensity and also frequency.
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Sprague et al. (1954) studied this question. Cardiac auscultation relies on the observer's hearing acuity, timing, and tonal appreciation to detect complex transient noises that are often near the lower limits of audibility.
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