S. Malviya et al., False alarms and sensitivity of conventional pulse oximetry versus the Masimo SET (TM) technology in the pediatric postanesthesia care unit, ANESTH ANAL, 90(6), 2000, pp. 1336-1340
Citations number
17
Categorie Soggetti
Aneshtesia & Intensive Care","Medical Research Diagnosis & Treatment
We compared the incidence and duration of false alarms (FA)and the sensitiv
ity of conventional pulse oximetry (CPO) with Masimo Signal Extraction Tech
nology(TM) (Masimo SET(TM); Masimo Corporation, Irvine, CA) in children in
the postanesthesia care unit. Disposable oximeter sensors were placed on se
parate digits of one extremity. Computerized acquisition of synchronous dat
a included electrocardiograph heart rate, Spo(2), and pulse rate via CPO an
d Masimo SET(TM). Patient motion, respiratory, and other events were simult
aneously documented. Spo(2) tracings conflicting with clinical observations
and / or documented events were considered false. These were defined as 1)
Data dropout, complete interruption in Spo(2) data; 2) False negative, fai
lure to detect Spo(2) less than or equal to 90% detected by another device
or based on observation/intervention; 3) FA, Spo(2) less than or equal to 9
0% considered artifactual; and 4) True alarm (TA), Spo(2) less than or equa
l to 90% considered valid. Seventy-five children were monitored for 35 +/-
22 min/patient (42 h total). There were 27 TAs, all of which were identifie
d by Masimo SET(TM) and only 16 (59%) were identified by CPO (P < 0.05). Th
ere was twice the number of FAs with CPO (10 vs 4 Masimo SET(TM); P < 0.05)
. The incidence and duration of data dropouts were similar between Masimo S
ET(TM) and CPO. Masimo SET(TM) reduced the incidence and duration of FAs an
d identified a more frequent incidence of TAs compared with CPO.