Third and Fourth Heart Sound Gallop C31 | Auscultation #77 | Lesson with Audio

patient thorax when auscultating by stethoscope

patient position during auscultation
The patient was supine during auscultation.

Description

Both the third and fourth heart sounds (S3 and S4) are low frequency. S4 is lower than S3. This is a pattern that occurs with improvement of heart failure. That is, an S3 pattern gives way to an S3 S4 pattern as the patient improves.

Phonocardiogram

Anatomy

Third and Fourth Heart Sound Gallop C31


Authors and Sources

Authors and Reviewers

Sources





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