tailieunhanh - Báo cáo y học: " Does the tube-compensation function of two modern mechanical ventilators provide effective work of breathing relief"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về y học đề tài: Does the tube-compensation function of two modern mechanical ventilators provide effective work of breathing relief? | Critical Care October 2003 Vol 7 No 5 Maeda et al. Research Open Access Does the tube-compensation function of two modern mechanical ventilators provide effective work of breathing relief Yoshiko Maeda1 Yuji Fujino2 Akinori Uchiyama2 Nobuyuki Taenaka3 Takashi Mashimo4 and Masaji Nishimura5 Graduate student Intensive Care Unit Osaka University Medical School Suita Osaka Japan 2Assistant Professor Intensive Care Unit Osaka University Hospital Suita Osaka Japan 3Associate Professor Department of Anesthesiology Osaka University Medical School Suita Osaka Japan 4Professor Department of Anesthesiology Osaka University Medical School Suita Osaka Japan 5Associate Professor Intensive Care Unit Osaka University Hospital Suita Osaka Japan Correspondence Masaji Nishimura masaji@ Received 24 January 2003 Revisions requested 9 April 2003 Revisions received 9 May 2003 Revisions requested 29 May 2003 Revisions received 3 June 2003 Accepted 3 June 2003 Published 14 August 2003 Critical Care 2003 7 R92-R97 DOI cc2343 This article is online at http content 7 5 R92 2003 Maeda et al. licensee BioMed Central Ltd Print ISSN 1364-8535 Online ISSN 1466-609X . This is an Open Access article verbatim copying and redistribution of this article are permitted in all media for any purpose provided this notice is preserved along with the article s original URL. Abstract Objective An endotracheal tube ETT imposes work of breathing on mechanically ventilated patients. Using a bellows-in-a-box model lung we compared the tube compensation TC performances of the Nellcor Puritan-Bennett 840 ventilator and of the Drager Evita 4 ventilator. Measurements and results Each ventilator was connected to the model lung. The respiratory rate of the model lung was set at 10 breaths min with 1 s inspiratory time. Inspiratory flows were 30 or 60 l min. A full-length 8 mm bore ETT was inserted between the ventilator circuit and the model lung. The TC was set at 0 10 50 and