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Chest, Vol 79, 336-339, Copyright © 1981 by American College of Chest Physicians

ARTICLES

The bronchial leak squeak: a new sign for the physical diagnosis of bronchopleurocutaneous fistula

P Krumpe, T Finley, L Wong and R Treasure

We describe a unique physical diagnostic sign that we have observed in seven patients with bronchopleurocutaneous fistulas. Such patients have a highpitched squeak over the affected chest area during sustained Valsalva maneuver. We postulate that turbulence across the bronchial fistula due to high transbronchial pressure gradient during the Valsalva maneuver produces the squeaking sound. The pitch of the leak squeak sign is higher in smaller fistulas than in larger fistulas; decreases in intensity and increases in pitch occurred in two patients in whom the bronchial fistula slowly closed. The absence of the leak squeak sound in patients with spontaneous pneumothorax suggests that this sign can be used to differentiate central airways from alveolar air leaks.




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Copyright © 1981 by the American College of Chest Physicians.