Bed exit alarms

Area of Science:

• Gerontology
• Patient Safety
• Medical Device Evaluation

Background:

• Bed-exit alarms are crucial for alerting caregivers when patients at risk of falls attempt to leave their beds unassisted.
• These alarms are intended to reduce fall incidents and facilitate timely assistance but do not prevent falls independently.
• Effective use requires integration into a broader fall-prevention strategy, acknowledging device limitations.

Purpose of the Study:

• To evaluate the performance of 16 different bed-exit alarm systems from seven manufacturers.
• To assess reliability in detecting bed-exit events and alerting caregivers.
• To determine the effectiveness in minimizing nuisance alarms and resistance to tampering.

Main Methods:

• Evaluated 16 bed-exit alarms: 12 pressure-sensor, 3 cord-activated, and 1 position-sensitive.
• Assessed reliability of event detection and caregiver alerts.
• Rated products on nuisance alarm minimization, tamper resistance, ease of use, and battery performance.

Main Results:

• All tested alarms reliably detected bed-exit events.
• Significant variations were observed in caregiver alerting effectiveness, nuisance alarm rates, and tamper resistance.
• Three pressure-sensor alarms were rated 'Preferred'; five were 'Acceptable', and four were 'Not Recommended'.
• All three cord-activated alarms and the patient-worn alarm were rated 'Acceptable'.

Conclusions:

• Bed-exit alarms are effective tools for fall prevention when used correctly within a comprehensive program.
• Product selection should consider specific needs regarding reliability, nuisance alarm reduction, and tamper resistance.
• While all alarms detected exits, performance varied, highlighting the importance of careful evaluation and selection.