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Anesthesia and analgesia · Jul 2004
Does the presence of a tracheal bronchus affect the margin of safety of double-lumen tube placement?
- Anthony M H Ho, Manoj K Karmakar, Wynnie W M Lam, Freda O Lam, T W Lee, S K Ng, and David C Chung.
- Department of Anaesthesia & Intensive Care, The Chinese University of Hong Kong and Prince of Wales Hospital, Shatin, NT, Hong Kong SAR, PRC. hoamh@cuhk.edu.hk
- Anesth. Analg. 2004 Jul 1; 99 (1): 293-5.
AbstractDuring double-lumen tube (DLT) placement, the anesthesiologist must be mindful of the margin of safety. We determined how this margin is affected by the presence of a tracheal bronchus by elucidating the mathematical relationship between some relevant physical dimensions of the trachea, bronchi, and DLT. Our results suggest that a tracheal bronchus only rarely affects the intrinsic margin of safety of DLT placement. When the tracheal bronchus is located much higher than its most frequently seen location (within 2 cm from the carina), however, there is increased risk that it could be blocked by the tracheal cuff of a left-sided DLT.
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