• M Haniuda, H Nishimura, O Kobayashi, T Yamanda, M Miyazawa, T Aoki, and F Iida.
• Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan.
• J. Am. Coll. Surg. 1995 May 1;180(5):537-40.

BackgroundConservative management with intrapleural drainage and total parenteral nutrition (TPN) has been the first choice of treatment for postoperative chylothorax. With this approach, however, it usually takes several weeks for the chylothorax to resolve and it is sometimes unsuccessful. In this study, we reviewed seven patients who had chylothorax develop after pulmonary resection for primary carcinoma of the lung.Study DesignThe patients were treated according to a "one-week trial" that consisted of one week of observation with intrapleural drainage and maximum parenteral nutritional support followed by operative intervention if the effect of the conservative therapy was not adequate. When the chylous leak was decreased to less than 100 mL/day or less than 15 percent of the maximum daily drainage volume after the "one-week trial," the conservative management was continued for two more weeks. After observation for three weeks, oral intake was begun and a final evaluation of the treatment was made.ResultsOne patient did not consent to the "one-week trial" and underwent operative treatment on the third postoperative day. Two patients had chylous leaks less than 100 mL/day or less than 15 percent of the maximum daily chylous leak after one week observation. Conservative management with TPN was continued in these patients for two more weeks and operation was performed in one on the 20th day and in the other on the 22nd postoperative day. The remaining four patients underwent operative treatment on the seventh or eighth postoperative day. All of the operations for chylothorax were successful, and chest tubes were removed promptly. These results show that operative management of chylothorax was reliable and safe. The "one-week trial," however, offered few advantages in determining the therapeutic strategy for postoperative chylothorax.

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