• Junichi Okamoto, Tatsuro Okamoto, Yasuro Fukuyama, Chie Ushijima, Masafumi Yamaguchi, and Yukito Ichinose.
• Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka, Japan.
• Ann Thorac Cardiovasc Surg. 2006 Aug 1; 12 (4): 242-4.

BackgroundThe methods for managing chest drainage tubes during the postoperative period differ among thoracic surgeons and, as a result, the optimal method remains controversial.Patients And MethodsWe reviewed 170 consecutive patients undergoing a pulmonary lobectomy for either primary lung cancer or metastatic lung cancer from January 1998 to December 2002. After the operation, the chest drainage tube was placed on a suction pump with a negative pressure of -10 cmH(2)O in 120 patients before 2001, while such drainage tubes were kept on water seal in 47 cases mainly since 2001.ResultsRegarding the preoperative and postoperative variables, postoperative air leak as well as the video-assisted thoracic surgery (VATS) procedure were more frequently observed in the water seal group than in the suction group (p=0.01580, p<0.001, respectively). In comparing these different populations, each Kaplan-Meier curve, which presented the duration of the postoperative air leak seemed to be similar between the two methods.ConclusionThese observations suggest that applying chest tubes on water seal seems to be an effective method for preventing postoperative air leak in clinical practice. However, a prospective randomized trial using a larger series of patients is warranted for this subject.

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