title: Comparison between flutter valve drainage bag and underwater seal device for pleural drainage after lung surgery.
abstract: OBJECTIVE
  The purpose of the present study was to compare the use of a conventional underwater seal device with suction and a flutter valve drainage bag for pleural drainage after lung surgery.
  
  
  METHODS
  Altogether 59 patients undergoing elective lung surgery except pneumonectomy between February 2001 and April 2002 were prospectively randomized to receive postoperative pleural drainage by 28F chest tube(s) attached to underwater seal device placed on negative pressure of 15 cm of water or flutter valve drainage bag. Following withdrawal of four patients from the study, 55 patients were evaluated (31 patients in the underwater seal device group and 24 patients in the flutter valve drainage bag group).
  
  
  RESULTS
  In the conventional underwater seal device group the mean drainage time was 2.6 (SD +/- 2.0) days and in the flutter valve drainage bag group the mean drainage time was 3.3 days (SD +/- 4.0); difference -0.8, 95% confidence interval (CI) -2.4 to 0.9. The mean length of hospitalization in the surgical ward was 3.6 (SD +/- 2.7) and 4.1 (SD +/- 4.4) days respectively (difference -0.5, 95% CI -2.5 to 1.4).
  
  
  CONCLUSIONS
  The results of this study suggest that flutter valve drainage system is a safe and feasible alternative in managing postoperative air leaks and haemorrhage after lung surgery other than pneumonectomy if air leaks are not extremely massive.
authors.affiliation: Department of Surgery, Satakunta Central Hospital, Pori, Finland. sailaritta.vuorisalo@hus.fi
authors.forename: S
authors.initials: S
authors.lastname: Vuorisalo
authors.forename: P
authors.initials: P
authors.lastname: Aarnio
authors.forename: J
authors.initials: J
authors.lastname: Hannukainen
mesh_terms: D004322:Drainage / Q000379:methods*; D004864:Equipment and Supplies; D005260:Female; D006801:Humans; D008168:Lung / Q000473:pathology / Q000601:surgery; D008171:Lung Diseases / Q000145:classification / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D010996:Pleural Effusion / Q000209:etiology / Q000628:therapy*; D011182:Postoperative Care; D011183:Postoperative Complications / Q000628:therapy*; D011446:Prospective Studies; D013510:Pulmonary Surgical Procedures; D016896:Treatment Outcome