Clinical Pulmonary Physiology

Abstract
BronchospirometryBronchospirometry, the simultaneous and separate recording of ventilation and gas exchange of the two lungs, was first performed in man with the double bronchoscope of Jacobaeus and his associates.207 A number of clinically informative results were obtained,129 but the procedure was not generally accepted until pliable, double-lumen catheters simplified the examination and made it more agreeable to patients.208 , 209 These rubber catheters have separate tubes for the two lungs within a single sheath. The airways are isolated from each other and from the atmosphere by inflatable rubber cuffs. Intubation is accomplished by indirect laryngoscopy under topical anesthesia; proper placement is . . .

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