Clinical examination

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How accurately do we recognize heart sounds?

Sound recognition by third-year internal medicine residents

Heart sounds

Recognition rate (%)*

• Pericardial rub

50

• Fourth sound

60

• Third sound

50

• Opening snap

10

• Mid-systolic click

15

• Early systolic click

0

Estimated to nearest 5th percentile from charted values in article.

JAMA.1997;278:717



Heart sounds	Recognition rate (%)*
• Pericardial rub	50
• Fourth sound	60
• Third sound	50
• Opening snap	10
• Mid-systolic click	15
• Early systolic click	0
Estimated to nearest 5th percentile from charted values in article. JAMA.1997;278:717

How accurately do we recognize heart sounds?

Disclaimer: Material is for discussion & review and is not advice or endorsement. Comments to Donald Vine MD.