Ventilator alarm fatigue causes 80-95% of alarms to be ignored in ICUs

ICU ventilators generate between 150 and 400 alarms per patient per day, the overwhelming majority of which are false or clinically insignificant, causing nurses to become desensitized and delay responding to or silence alarms reflexively. The Joint Commission identified alarm fatigue as a top patient safety concern after multiple sentinel events where patients died because a critical ventilator disconnect alarm was ignored amid hundreds of nuisance alerts. A single ICU nurse managing 2-3 ventilated patients can face over 1,000 alarms per 12-hour shift. This persists because ventilator manufacturers set conservative default thresholds to avoid liability for missed events, and customizing alarm parameters per patient requires clinical engineering time that most hospitals cannot staff.