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: Carbon dioxide monitoring and evidence-based practice – now you see it, now you don’t. | Available online http content 8 4 219 Commentary Carbon dioxide monitoring and evidence-based practice -now you see it now you don t David Gattas1 Raj Ayer2 Ganesh Suntharalingam3 and Martin Chapman4 1Staff Specialist Intensive Care Services Royal Prince Alfred Hospital Sydney Australia 2Senior Registrar Intensive Care Services Royal Prince Alfred Hospital Sydney Australia 3Consultant in Intensive Care Medicine and Anaesthesia Northwick Park St Marks Hospitals Harrow UK 4Assistant Professor University of Toronto Sunnybrook Women s College Health Sciences Centre Toronto Canada Corresponding author David Gattas Published online 8 July 2004 This article is online at http content 8 4 219 2004 BioMed Central Ltd Critical Care 2004 8 219-221 DOI cc2916 Abstract Carbon dioxide has been monitored in the body using a variety of technologies with a multitude of applications. The monitoring of this common physiologic variable in medicine is an illustrative example of the different levels of evidence that are required before any new health technology should establish itself in clinical practice. End-tidal capnography and sublingual capnometry are two examples of carbon dioxide monitoring that require very different levels of evidence before being disseminated widely. The former deserves its status as a basic standard based on observational data. The latter should be considered investigational until prospective controlled data supporting its use become available. Other applications of carbon dioxide monitoring are also discussed. Keywords biomedical technology assessment capnography critical care evidence-based medicine physiologic monitoring Introduction The technology required to perform capnography on expired gas is not new and its use has been considered a standard in basic anaesthetic monitoring by the American Society of Anesthesiologists since 1986 1 . This contrasts with the use of sublingual capnometry as
