FREQUENCY AND DURATION OF OXIMETER DROP-OUTS IN THE NICU: AN OBSERVATIONAL STUDY

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Autoři: Thomas Bachman; Karel Roubík
Působiště autorů: Czech Technical University in Prague, Kladno, Czech Republic ; Department of Biomedical Technology, Faculty of Biomedical Engineering
Vyšlo v časopise: Lékař a technika - Clinician and Technology No. 1, 2020, 50, 12-15
Kategorie: Original research
doi: https://doi.org/10.14311/CTJ.2020.1.02

Souhrn

Oximeters used for continuous monitoring experience periods with no signal. This SpO₂ drop-out is widely acknowledged and its causes generally understood. This is a prospectively designed analysis of an existing database with the aim of characterizing drop-outs as experienced in the neonatal ICU. The data reflects 116 days of monitoring in seven tertiary care neonatal ICUs in 6 countries. From the evaluation of 1,396 drop-outs we found that typically the time was minimal with missing SpO₂ data, and the episodes were short (median 2.79 minutes per day IQR 0.17–76, median 22 seconds IQR: 15–37, respectively). During about half of the days there were no prolonged dropouts (1 minute or longer), even so half of the total time spent with no SpO₂ data were in prolonged episodes (median length 110 seconds IQR 85–150). The predominate factor associated with excessive drop-out time was the number of prolonged episodes rather than their duration. We concluded that the impact of drop-outs during manual control of inspired oxygen primarily impact alarm fatigue, but that during automatic FiO₂ control they could have an important impact. The relative effectiveness of the fall-back strategies of these automatic control systems ought to be evaluated.

Klíčová slova:

oximeter – oxygen saturation – SpO2 drop-out

Zdroje

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