Abstract Background Alarm fatigue occurs when ICU personnel are exposed to an excessive number of alarms, resulting in desensitization, improper alarm management, and reduced patient safety. This study aimed to assess the extent of alarm fatigue among ICU nurses at a German university hospital using the Charité Alarm Fatigue Questionnaire (CAFQa) and to examine differences based on working hours and professional experience. Methods An observational cross-sectional study design was used. Data were collected via an online survey from nurses working in five intensive care units (ICUs) of a German university hospital between January and March 2024. The questionnaire comprised 27 items based on the Charité Alarm Fatigue Questionnaire (CAFQa). Additionally, participants rated their perceived alarm fatigue on a visual analogue scale ranging from 0 to 100%. Above that, participants were asked to provide information regarding their ICU experience and monthly workdays. Statistical significance was assessed using two-sample t-tests. Correlations between CAFQa scores and self-reported alarm fatigue were analysed using Pearson’s correlation coefficient. A p-value of < 0.05 was considered statistically significant. Results A total of 70 ICU nurses participated in the study. No significant differences in alarm fatigue were found between nurses working more than eight days per month and those working fewer days (t(56) = 1.00, p = 0.32), and with more than one year of ICU experience and less experience, respectively (t(56) = 1.32, p = 0.19). Complete CAFQa data were available for 59 participants. The mean CAFQa score was (17.7 ± 5.5) points out of 36 points ((49 ± 15) %), indicating moderate to high alarm fatigue. Individual scores ranged from 5 (14%) to 28 (78%). The average self-reported alarm fatigue was (47 ± 22) %. Conclusions Alarm fatigue is present among ICU nurses in moderate to high levels, but no significant differences were observed based on working hours or professional experience. Since alarm fatigue may have grave repercussions for nurses and patients, recognition and implementation of effective strategies to minimise it are crucial. Trial registration Clinical trial number: Not applicable.
Hohenwallner et al. (Tue,) studied this question.