HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Kiely, D. K. Articles by Marcantonio, E. R. Search for Related Content PubMed PubMed Citation Articles by Kiely, D. K. Articles by Marcantonio, E. R.

Association Between Psychomotor Activity Delirium Subtypes and Mortality Among Newly Admitted Postacute Facility Patients

¹ Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts.
² Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
³ Harvard Medical School/Beth Israel Deaconess Interdisciplinary Center on Aging, Boston, Massachusetts.

Address correspondence to Dan K. Kiely, MPH, MA, Hebrew SeniorLife, Institute for Aging Research, 1200 Centre Street, Boston, MA 02131. E-mail: kiely{at}hrca.harvard.edu

Background. Delirium is common among hospitalized elders and may persist for months. Therefore, the adverse impact of delirium on independence often occurs in the postacute care (PAC) setting. The effect of psychomotor subtypes on delirium remains uncertain. The purpose of this study is to examine the association between psychomotor activity delirium subtypes and 1-year mortality among 457 newly admitted delirious PAC patients.

Methods. Patients were screened for delirium on admission to PAC facilities after an acute hospitalization, and patients with "Confusion Assessment Method"-defined delirium were enrolled. Psychomotor activity was assessed using the Memorial Delirium Assessment Scale, and patients were classified as to their delirium subtype (hyperactive, hypoactive, mixed, or normal). One-year mortality data were obtained from the National Death Index. A Kaplan–Meier survival analysis and a proportional hazards analysis using indicator (dummy) variables with normal psychomotor activity as the referent were performed.

Results. The normal psychomotor activity group had the lowest 1-year mortality rate, followed by the hyperactive, mixed, then hypoactive groups in increasing order. Independent of age, gender, comorbidity, dementia, and delirium severity, hypoactive patients were 1.60 (95% confidence interval [CI], 1.09–2.35) times more likely to die during the 1-year follow-up period than were patients with normal psychomotor activity. The hyperactive (hazard ratio = 1.30; 95% CI, 0.73–2.31) and mixed (hazard ratio = 1.25; 95% CI, 0.72–2.17) psychomotor groups had nonsignificant elevated risks relative to the normal psychomotor behavior group.

Conclusions. All three psychomotor disturbance subtypes had an elevated risk of dying during the 1-year follow-up relative to the normal psychomotor group, though the hypoactive group had the highest mortality risk and was the only group with a statistically significantly elevated risk relative to the normal group.

This article has been cited by other articles:

				G. Bellelli, S. Speciale, E. Barisione, and M. Trabucchi DELIRIUM SUBTYPES AND 1-YEAR MORTALITY AMONG ELDERLY PATIENTS DISCHARGED FROM A POST-ACUTE REHABILITATION FACILITY J. Gerontol. A Biol. Sci. Med. Sci., October 1, 2007; 62(10): 1182 - 1183. [Full Text] [PDF]