Comparing dementia patients' nighttime objective movement indicators with staff observations

Area of Science:

• Gerontology
• Dementia Care
• Medical Informatics

Background:

• Nighttime wandering is a common challenge in institutionalized dementia patients.
• Pharmacological and non-pharmacological treatments are used, with efficacy often assessed via actigraphy or nursing records.
• Nursing records are a primary, yet potentially subjective, source for evaluating nighttime wandering interventions.

Purpose of the Study:

• To compare the accuracy of integrated circuit (IC) tag monitoring with traditional hourly nursing records for assessing nighttime wandering in dementia patients.
• To identify factors influencing the agreement rates between these two data collection methods.

Main Methods:

• A 60-bed dementia care unit in a Japanese general hospital was used for the study.
• An IC tag monitoring system tracked patient movements for over six months.
• Movement data (distance per hour) from the IC tag system were compared against hourly nighttime nursing records to calculate agreement rates.

Main Results:

• Thirty-five dementia patients were monitored, with 10-30% showing movement each hour.
• The overall agreement rate between IC tag monitoring and nursing records was low at 39%.
• Agreement was significantly correlated with the interquartile range of movement distance, medication changes, physical condition, and daytime behavioral and psychological symptoms of dementia.

Conclusions:

• The study highlights a significant discrepancy between objective movement monitoring and subjective nursing records in dementia care.
• Despite low agreement, nursing staff seemed to focus more on patients with notable daytime events or highly variable movement patterns.
• Findings suggest a need for improved objective monitoring methods to complement traditional nursing observations in evaluating nighttime wandering interventions.