Legal lessons: "But his O(2) sat was normal!".

CLIN ICAL NURSE SPEC IALI STTM Clinical Nurse SpecialistTM Copyright © 2002 by Lippincott Williams & Wilkins, Inc. N are the interface between technology and individualized patients.1 We use an array of technology for patient monitoring to provide nursing care in a variety of healthcare settings. According to the National Association of Clinical Nurse Specialists (NACNS) Statement on Practice and Education,2 one of the core competencies for clinical nurse specialists is the selection, design, and use of technology, including products and devices, to improve patient outcomes. We often serve as teachers and consultants to nursing personnel in the use and interpretation of data obtained through trend assessment. One of the most common technological devices used in hospitals and ambulatory care settings is the pulse oximeter to measure oxygen saturation (and also measures heart rate). The normal oxygen saturation is expected to be equal to or greater than 95%,3 with more than 90% as the lowest normal value that is acceptable. It is economical and easy to use and provides a quick evaluation. Initially found in postanesthesia units, pulse oximetry has become mainstream in acute care settings. In fact, not using or incorrectly interpreting pulse oximetry results continues to be the subject of numerous medical malpractice cases. The following recommendations are provided that have been gleaned from the review of depositions and medical records in malpractice cases in which oxygenation status and pulse oximetry have been major issues.