Adventitious or Added Breathe Sounds Flashcards
Discontinuous
Crackles or rales
continuous
wheezes and rhonchi
Intermittent, nonmusical, and brief
Crackles or rales
Like dots in time
crackles or rales
soft, high- pitched, very brief (5–10 msec)
fine crackles
somewhat louder, lower in pitch, brief (20–30 msec)
coarse crackles
≥250 msec, sinusoidal prolonged (but not necessarily persisting throughout the respiratory cycle)
wheezes and rhonchi
Like dashes in time
wheezes and rhonchi
musical, relatively high pitched (≥400 Hz) with hissing or
shrill quality
wheezes
relatively low pitched (≤200 Hz) with snoring quality
rhonchi
is a continuous high frequency, high pitched musical sound produced during airflow through a narrowing in the upper respiratory tract
stridor
is a discontinuous, low-frequency, grating sound that arises from inflammation and roughening of the visceral pleura as it slides the against the parietal pleura.
pleural friction rub
is a series of precordial crackles synchronous with the heartbeat, not with respiration.
mediastinal crunch (Hamman Sign)