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To facilitate the production of sputum, the doctor may: tap on the persons chest to loosen any sputum ask the person to inhale a salty vapor pass a bronchoscope a thin, lighted tube with a small brush at the end through the mouth and into the airways to collect a sample The person may need to avoid eating or drinking for 2 hours before the test

The chemistry of this is very interesting, says Neal Benowitz, professor of medicine at the University of California, San Francisco and a leader of the California Consortium on Thirdhand Smoke

A pressure equalization tube will resolve the symptoms of Eustachian tube dysfunction, although the risks of ear infection and eardrum perforation must be weighed against this benefit

Size XS/S, 26" waist