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  • Title: Comparison of water seal and suction after pulmonary lobectomy: a prospective, randomized trial.
    Author: Brunelli A, Monteverde M, Borri A, Salati M, Marasco RD, Al Refai M, Fianchini A.
    Journal: Ann Thorac Surg; 2004 Jun; 77(6):1932-7; discussion 1937. PubMed ID: 15172239.
    Abstract:
    BACKGROUND: The objective of the present study was to assess whether placing chest tubes on water seal after pulmonary lobectomy reduced the duration of air leak compared with suction. METHODS: One hundred forty-five patients who underwent pulmonary lobectomy for lung cancer and with an air leak on the first postoperative day were prospectively randomly assigned to two groups: in group 1 (72 patients), chest tubes were placed on water seal on the morning of the first postoperative day; in group 2 (73 patients), chest tubes were on continuous suction (-20 cm H(2)O). Eighty percent of the patients who underwent upper lobectomy had also a pleural tent procedure. Preoperative, operative, and postoperative variables were compared between the groups. RESULTS: The two groups were evenly matched for preoperative and operative characteristics. No statistically significant differences were found between group 1 and group 2 in terms of air leak duration (6.5 versus 6.3, respectively; p = 0.9) and the incidence of prolonged air leak cases (27.8% versus 30.1%, respectively; p = 0.8). Similar results were obtained when the analysis was corrected for the length of the stapled parenchyma and the site of resection (upper and lower resections) or restricted to patients with a forced expiratory volume in 1 second less than 80% of predicted. Water seal patients had increased postoperative complications compared with suction patients (31.9% versus 17.8%, respectively; p = 0.056). CONCLUSIONS: Chest tubes placed on water seal after pulmonary lobectomy were generally well tolerated and safe; however, they did not reduce the duration of air leak or the incidence of prolonged air leak compared with suction.
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