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Titolo:
INFLUENCE OF PULSE OXIMETER LOWER ALARM LIMIT ON THE INCIDENCE OF HYPOXEMIA IN THE RECOVERY ROOM
Autore:
RHEINECKLEYSSIUS AT; KALKMAN CJ;
Indirizzi:
TWENTEBORG HOSP,DEPT ANAESTHESIA,POB 7600 NL-7600 SZ ALMELO NETHERLANDS
Titolo Testata:
British Journal of Anaesthesia
fascicolo: 4, volume: 79, anno: 1997,
pagine: 460 - 464
SICI:
0007-0912(1997)79:4<460:IOPOLA>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
RANDOMIZED EVALUATION; BACTERIAL CLEARANCE; INSPIRED OXYGEN; FALSE ALARMS; FREQUENCY; PERFORMANCE; HYPOXEMIA; EVENTS; MOTION;
Keywords:
EQUIPMENT, ALARMS; OXYGEN, SATURATION; HYPOXEMIA; EQUIPMENT, PULSE OXIMETERS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
A.T. Rheineckleyssius e C.J. Kalkman, "INFLUENCE OF PULSE OXIMETER LOWER ALARM LIMIT ON THE INCIDENCE OF HYPOXEMIA IN THE RECOVERY ROOM", British Journal of Anaesthesia, 79(4), 1997, pp. 460-464

Abstract

In a prospective, randomized study, we have investigated the effects of two arbitrary pulse oximeter lower alarm limit (LAL) settings (90%=group 90, n=320 and 85%=group 85, n=327) on the incidence of hypoxaemia in the recovery room. in group 90, we calculated the theoretical effect of elimination of transient episodes of low pulse oximeter oxyhaemoglobin saturation (Sp(O2)) by introducing a time delay between the onset of the alarm condition and triggering of the alarm. When only hypoxaemic episodes lasting more than 1 min were included, Sp(O2) less than or equal to 90% occurred in 11% of patients in group 90 and in 20% in group 85 (relative risk (RW) 1.84, confidence interval (CI) 1.26-2.69; P<0.01). Hypoxaemia less than or equal to 85% occurred in 2% of patients in group 90 and in 6% in group 85 (RR 3.10, CI 1.32-7.28; P<0.01). In group 90, 1007 alarms (33% false) occurred, whereas in group 85,395 alarms (28% false) occurred. Introducing a theoretical delay of 15 s in group 90 between crossing the alarm threshold and triggering the alarm would have reduced the number of alarms by 60%. The results ofthe study suggest that decreasing the alarm limit in an attempt to reduce frequent false alarms may lead to an increase in more relevant episodes of hypoxaemia and setting the LBL at 85% cannot be recommended routinely. Introducing a 15 s delay in group 90 would reduce the number of alarms by the same amount as changing the LAL from 90% to 85%.

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Documento generato il 01/10/20 alle ore 15:35:49