| Abstrakt: |
OBJECTIVES: Pulse oximetry is widely used in the NICU, but clinicians often distrust the displayed values during patient motion, i.e., questionable oxygen saturation ( SpO[SUB2] and pulse rate ( PR ) values. Masimo Corporation)( Irvine, CA ) has developed pulse oximetry with claims of resistance to sources of interference. To test this premise, we compared the performance of the Masimo SET pulse oximeter to a conventional device, Nellcor N - 200, and then with three other new - generation pulse oximeters, Nellcor N - 395, Novametrix MARS, and Philips Viridia 24C. STUDY DESIGN: We studied 26 nonsedated NICU infants who were on supplemental oxygen and / or mechanical ventilation. ECG heart rate ( HR ) from a bedside monitor and SpO[SUB2] and PR from the two pulse oximeters were captured by a PC for a total of 156 hours. The ECG HR and pulse oximeter spectral waveform were analyzed at alarms for hypoxemia ( SpO[SUB2] ≤ 85% ) and / or bradycardia ( HR ≤ 80 bpm ). We then compared the performance of the Masimo SET to three other new - generation pulse oximeters, Agilent Viridia 24C, Nellcor N - 395, and Novametrix MARS, in a similar population of seven infants for a total of 28 hours. We added to the test criteria the ability of the various pulse oximeters to track acute changes in HR. RESULTS: Compared with Nellcor, Masimo SET had 86% fewer false alarms, which also were shorter in duration, resulting in 92% less total alarm time. Masimo SET also identified nearly all bradycardias versus 14% for the Nellcor. Compared with the new - generation pulse oximeters, false desaturations, data drop - outs, and false bradycardias were lowest for Masimo SET, as was the capture of true desaturations and bradycardias. Notably, the new - generation devices differed greatly in their ability to detect changes in HR ( i.e., the frequency of frozen PR during times of ECG HR change was 0, 6, 11, and 46 for Masimo, Nellcor, Philips, and Novametrix, respectively ). ... [ABSTRACT FROM AUTHOR] |
