Bullectomy for XXXX in emphysema.

@entity1 @entity3617 @entity13404 @entity4530 @entity1353 @entity358
The results of changes in @entity1353 and pulmonary function are reported in 27 @entity13404 @entity1 followed up for about 10 years after @entity4530 , which occupied at least 50% of a hemithorax. In 10 @entity1 bilateral bullectomy was done. The spirographic improvement depends on the type of bulla. Resection of bullae at open communication with the bronchial tree resulted predominantly in improvement of forced expiratory volume as a percentage of vital capacity, whereas after closed bullae were resected, the increase in vital capacity was most apparent. Dyspnea lessened in all @entity1 . Seven older @entity1 died of ventilatory insufficiency. Preoperatively they were clinically and functionally severely disabled. They improved markedly after bullectomy, and their mean survival time was more than 7 years. In all 27 @entity1 improvement of @entity1353 and pulmonary function lasted several years and only gradually returned to preoperative values and beyond. No @entity4530 recurred in the observation period; neither was there an accelerated progression of the @entity13404 process. Our present selection criteria, based on previous experience, are as follows: @entity4530 occupying at least 50% of a hemithorax, definite displacement of adjacent lung tissue, exclusion of the presence of @entity358 , and absence of chronic @entity3617 .
