Original Article

Relationship between cognitive function affecting motor Functional Independence Measure and hypnotics

Hiroko Otsubo, Ph, Keiko Kishimoto, PhD, Iyori Hirano, RPT, Hitoshi Nakano, MD, Kazuhiro Itaya, MD, PhD, Ryota Kumaki, Ph, MS, Hiroyuki Osumi, Ph, MS
Jpn J Compr Rehabil Sci 13: 4-11, 2022

Purpose: The purpose of this study was to examine the relationship between cognitive dysfunction affecting motor Functional Independence Measure (FIM) and hypnotics.
Methods: This was a retrospective study involving 509 patients aged >- 65 years who were discharged from a convalescent rehabilitation ward.
Results: Multiple regression analysis was performed with motor FIM efficiency and motor FIM effectiveness (motor FIM-e) as independent variables and the presence or absence of cognitive dysfunction as the dependent variable. The use of hypnotics in patients with cognitive dysfunction showed a positive relationship with motor FIM efficiency (B=0.147, P=0.019) and motor FIM-e (B=0.141, P=0.026). Multiple regression analyses were performed after further classifying hypnotics by therapeutic class into hypnotics with new mechanisms, non-benzodiazepine (BZ) hypnotics, and BZ hypnotics. Non-BZ hypnotics (B=0.141, P=0.021) showed a positive relationship with motor FIM efficiency. Non-BZ hypnotics (B=0.158, P=0.009) and BZ hypnotics (B=0.178, P=0.003) showed a positive relationship with motor FIM-e, whereas hypnotics with new mechanisms of action did not. In contrast, none of the three combinations of hypnotics showed any significant relationship with either motor FIM efficiency or motor FIM-e in patients without cognitive dysfunction.
Conclusion: The results suggested that the use of hypnotics in patients with cognitive dysfunction increases motor FIM efficiency and motor FIM-e.

Key words: convalescent rehabilitation ward, motor FIM, cognitive function, hypnotics

Contents (volume 13)