Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Pulse oximetry is one of the most commonly employed monitoring modalities in the critical care setting. This review describes the latest technological advances in the field of pulse oximetry. Accuracy of pulse oximeters and their limitations are critically examined. Finally, the existing data regarding the clinical applications and cost-effectiveness of pulse oximeters are discussed. | 13 05 99 14 36 Page 11 Review R11 Pulse oximetry Amal Jubran Pulse oximetry is one of the most commonly employed monitoring modalities in the critical care setting. This review describes the latest technological advances in the field of pulse oximetry. Accuracy of pulse oximeters and their limitations are critically examined. Finally the existing data regarding the clinical applications and cost-effectiveness of pulse oximeters are discussed. Addresses Division of Pulmonary and Critical Care Medicine Veterans Administration Hospital and Loyola University of Chicago Stritch School of Medicine Hines Illinois 60141 USA Correspondence Amal Jubran . Division of Pulmonary Critical Care Medicine Edward Hines Jr. VA Hospital Route 111N Hines Illinois 60141 USA Keywords respiratory monitoring oxygenation non-invasive Received 20 October 1998 Accepted 28 February 1999 Published 18 May 1999 Crit Care 1999 3 R11-R17 The original version of this paper is the electronic version which can be seen on the Internet http . The electronic version may contain additional information to that appearing in the paper version. Current Science Ltd ISSN 1364-8535 Introduction The human eye is poor at recognizing hypoxemia. Even under ideal conditions skilled observers cannot consistently detect hypoxemia until the oxygen O2 saturation is below 80 1 . The difficulty that physicians have in detecting hypoxemia was recently exemplified in a study of over 14000 patients being evaluated at the UCLA Emergency Department 2 . Patients were monitored by oximetry but recordings were given to physicians only after they completed their initial assessment. Changes in diagnostic testing and treatment were most likely at an O2 saturation of 89 and changes were actually less common at lower saturations probably because the physicians were able to detect evidence of hypoxemia without requiring a pulse oximeter. With the proliferation of pulse oximeters in different locations of the .
