Intensive Care Medicine

, Volume 25, Issue 12, pp 1360–1366

Multicentric study of monitoring alarms in the adult intensive care unit (ICU): a descriptive analysis

  • M.-C. Chambrin
  • P. Ravaux
  • D. Calvelo-Aros
  • A. Jaborska
  • C. Chopin
  • B. Boniface
ORIGINAL

DOI: 10.1007/s001340051082

Cite this article as:
Chambrin, MC., Ravaux, P., Calvelo-Aros, D. et al. Intensive Care Med (1999) 25: 1360. doi:10.1007/s001340051082
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Abstract

Objectives: To assess the relevance of current monitoring alarms as a warning system in the adult ICU. Design: Prospective, observational study. Settings: Two university hospital, and three general hospital, ICUs. Patients: Hundred thirty-one patients, ventilated at admission, from different shifts (morning, evening, night) combined with different stages of stay, early (0–3 days), intermediate (4–6 days) and late (> 6 days). Interventions: Experienced nurses were asked to record the patient's characteristics and, for each alarm event, the reason, type and consequence. Measurements and main results: The mean age of the patients included was 59.8 ± 16.4 and SAPS1 was 15.9 ± 7.4. We recorded 1971 h of care. The shift distribution was 78 mornings, 85 evenings and 83 nights; the stage distribution was 88 early, 78 intermediate and 80 late. There were 3188 alarms, an average of one alarm every 37 min: 23.7 % were due to staff manipulation, 17.5 % to technical problems and 58.8 % to the patients. Alarms originated from ventilators (37.8 %), cardiovascular monitors (32.7 %), pulse oximeters (14.9 %) and capnography (13.5 %). Of the alarms, 25.8 % had a consequence such as sensor repositioning, suction, modification of the therapy (drug or ventilation). Only 5.9 % of the alarms led to a physician's being called. The positive predictive value of an alarm was 27 % and its negative predictive value was 99 %. The sensitivity was 97 % and the specificity 58 %. Conclusions: The study confirms that the level of monitoring in ICUs generates a great number of false-positive alarms.

Key words MonitoringalarmICUMulticentric study

Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • M.-C. Chambrin
    • 1
  • P. Ravaux
    • 2
  • D. Calvelo-Aros
    • 1
  • A. Jaborska
    • 1
  • C. Chopin
    • 1
  • B. Boniface
    • 2
  1. 1.UPRES 2689, IFR 22, University of Lille 2, F-59 037 Lille, FranceFR
  2. 2.Laboratoire de Biomathématiques, University of Lille 2, F-59 037 Lille, FranceFR