Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care cung cấp cho các bạn kiến thức về ngành y đề tài: Chest wall mechanics during pressure support ventilation. | Available online http content 10 2 R54 Research Chest wall mechanics during pressure support ventilation Andrea Aliverti1 Eleonora Carlesso2 Raffaele Dellacà1 Paolo Pelosi3 Davide Chiumello4 Antonio Pedotti1 and Luciano Gattinoni2 4 1Dipartimento di Bioingegneria Politecnico di Milano Milano Italy 2Università degli Studi Milano Italy 3Dipartimento Ambiente Salute e Sicurezza Universita degli Studi dell Insubria Varese Italy 4Istituto di Anestesia e Rianimazione Fondazione IRCCS Ospedale Maggiore Policlinico Mangiagalli Regina Elena Milano Italy Corresponding author Andrea Aliverti Received 29 Jul 2005 Revisions requested 7 Sep 2005 Revisions received 21 Feb 2006 Accepted 24 Feb 2006 Published 31 Mar 2006 Critical Care 2006 10 R54 doi cc4867 This article is online at http content 10 2 R54 2006 Aliverti et al. licensee BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Open Access Abstract Introduction During pressure support ventilation PSV a part of the breathing pattern is controlled by the patient and synchronization of respiratory muscle action and the resulting chest wall kinematics is a valid indicator of the patient s adaptation to the ventilator. The aim of the present study was to analyze the effects of different PSV settings on ventilatory pattern total and compartmental chest wall kinematics and dynamics muscle pressures and work of breathing in patients with acute lung injury. Method In nine patients four different levels of PSV 5 10 15 and 25 cmH2O were randomly applied with the same level of positive end-expiratory pressure 10 cmH2O . Flow airway opening and oesophageal and gastric pressures were measured and volume variations for the entire chest wall the ribcage .
