Respiratory Expulsive Efforts Evoked by Maximal Lung Emptying

Background Some patients exhibit cough-like expiratory efforts (“deflation cough”) during slow vital capacity (SVC) and/or FVC maneuver. The cause and motor features of these expulsive efforts are unknown. Methods Of 1,720 consecutive patients, 43 displayed deflation cough during SVC or FVC, and 18 agreed to participate in additional examinations involving radiologic and clinical assessments. Variables of the motor pattern of deflation cough, as...