| Advanced pulse oximeter signal processing technology compared to simple averaging. II. Effect on frequency of alarms in the postanesthesia care unit. | |
| | |
MedLine Citation:
|
PMID: 10434214 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
STUDY OBJECTIVE: To determine the effect of a new pulse oximeter (Nellcor Symphony N-3000, Pleasanton, CA) with signal processing technique (Oxismart) on the incidence of false alarms in the postanesthesia care unit (PACU). DESIGN: Prospective study. SETTING: Nonuniversity hospital. PATIENTS: 603 consecutive ASA physical status I, II, and III patients recovering from general or regional anesthesia in the PACU. INTERVENTIONS: We compared the number of alarms produced by a recently developed "third"-generation pulse oximeter (Nellcor Symphony N-3000) with Oxismart signal processing technique and a conventional pulse oximeter (Criticare 504, Waukesha, WI). Patients were randomly assigned to either a Nellcor pulse oximeter or a Criticare with the signal averaging time set at either 12 or 21 seconds. For each patient the number of false (artifact) alarms was counted. MEASUREMENTS AND MAIN RESULTS: The Nellcor generated one false alarm in 199 patients and 36 (in 31 patients) "loss of pulse" alarms. The conventional pulse oximeter with the averaging time set at 12 seconds generated a total of 32 false alarms in 17 of 197 patients [compared with the Nellcor, relative risk (RR) 0.06, confidence interval (CI) 0.01 to 0.25] and a total of 172 "loss of pulse" alarms in 79 patients (RR 0.39, CI 0.28 to 0.55). The conventional pulse oximeter with the averaging time set at 21 seconds generated 12 false alarms in 11 of 207 patients (compared with the Nellcor, RR 0.09, CI 0.02 to 0.48) and a total of 204 "loss of pulse" alarms in 81 patients (RR 0.40, CI 0.28 to 0.56). The lower incidence of false alarms of the conventional pulse oximeter with the longest averaging time compared with the shorter averaging time did not reach statistical significance (false alarms RR 0.62, CI 0.3 to 1.27; "loss of pulse" alarms RR 0.98, CI 0.77 to 1.3). CONCLUSIONS: To date, this is the first report of a pulse oximeter that produced almost no false alarms in the PACU. |
| | |
Authors:
|
A T Rheineck-Leyssius; C J Kalkman |
Related Documents
:
|
8227594 - Intranasal midazolam for claustrophobia in mri. 7417124 - Medical hyperbaric oxygen therapy: 22 cases. 8111944 - Flumazenil as a diagnostic tool in the differential diagnosis of coma in a critically i... 8822584 - Increase of plasminogen activator inhibitor levels predicts outcome of leukocytopenic p... 7093834 - Arterial embolectomy in the modern era. 21917354 - Benign paroxysmal positional vertigo with multiple canal involvement. |
Publication Detail:
|
Type: Clinical Trial; Controlled Clinical Trial; Journal Article |
Journal Detail:
|
Title: Journal of clinical anesthesia Volume: 11 ISSN: 0952-8180 ISO Abbreviation: J Clin Anesth Publication Date: 1999 May |
Date Detail:
|
Created Date: 1999-10-07 Completed Date: 1999-10-07 Revised Date: 2007-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 8812166 Medline TA: J Clin Anesth Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 196-200 Citation Subset: IM |
Affiliation:
|
Department of Anesthesiology, Twenteborg Hospital, Almelo, The Netherlands. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Anesthesia Recovery Period* Anoxia / diagnosis, therapy Artifacts* False Positive Reactions Humans Monitoring, Physiologic / instrumentation* Oximetry* Prospective Studies Recovery Room* Signal Processing, Computer-Assisted* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Advanced pulse oximeter signal processing technology compared to simple averaging. I. Effect on freq...
Next Document: Comparison of renal function following anesthesia with low-flow sevoflurane and isoflurane.