title: Modified right-sided Broncho-Cath double lumen tube improves endobronchial positioning: a randomized study.
abstract: OBJECTIVE
  A left-sided double lumen tube is recommended for one-lung ventilation for most thoracic surgeries, but for certain indications, a right-sided double lumen tube (R-DLT) may be mandatory. Frequent malposition of R-DLTs has been reported. We propose an innovative modification of Mallinckrodt's Broncho-Cath R-DLT consisting of an enlarged area of the lateral orifice, and studied the impact of this modification on the adequacy of R-DLT positioning.
  
  
  METHODS
  Eighty adult patients scheduled for elective thoracic surgery were randomized into two groups: standard Broncho-Cath R-DLT, or modified Broncho-Cath R-DLT. After induction of anesthesia, the R-DLT was positioned using a fibreoptic bronchoscope. The position of the R-DLT was assessed on three occasions: with the patient supine (T1), then immediately following the patient's transfer to the lateral position (T2), and after repositioning of the tube, when needed, with the patient in lateral position (T3). A score ranging from 1 to 4 was accorded to the relative position of the right upper lobe (RUL) orifice in relation to the origin of the RUL bronchus.
  
  
  RESULTS
  The modified Broncho-Cath R-DLT was more frequently in an adequate position at T2: 77% vs 37% of patients (P = 0.0121), and easier to reposition at T3: 97% vs 74% of patients (P = 0.0109) in comparison to the standard Broncho-Cath R-DLT group.
  
  
  CONCLUSIONS
  These data suggest the superiority of the modified Broncho-Cath R-DLT compared to a standard Broncho-Cath R-DLT for optimal R-DLT positioning to facilitate one-lung ventilation during thoracic surgery.
authors.affiliation: Department of Anesthesiology, Laval University Heart and Lung Institute, Laval Hospital, 2725, Chemin Ste-Foy, Ste-Foy, Québec G1V 4G5, Canada. jean.bussieres@anr.ulaval.ca
authors.forename: Jean S
authors.initials: JS
authors.lastname: Bussières
authors.forename: Yves
authors.initials: Y
authors.lastname: Lacasse
authors.forename: Dany
authors.initials: D
authors.lastname: Côté
authors.forename: Michel
authors.initials: M
authors.lastname: Beauvais
authors.forename: Sophie
authors.initials: S
authors.lastname: St-Onge
authors.forename: Jérôme
authors.initials: J
authors.lastname: Lemieux
authors.forename: Julie
authors.initials: J
authors.lastname: Soucy
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000770:Anesthesia, Endotracheal / Q000295:instrumentation* / Q000379:methods; D035843:Biomedical Research; D001999:Bronchoscopy; D002985:Clinical Protocols; D004867:Equipment Design; D005260:Female; D005336:Fiber Optic Technology; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation* / Q000379:methods; D008297:Male; D008875:Middle Aged; D011187:Posture; D011446:Prospective Studies; D019616:Thoracic Surgical Procedures