期刊
PAIN MEDICINE
卷 16, 期 10, 页码 1930-1942出版社
OXFORD UNIV PRESS
DOI: 10.1111/pme.12769
关键词
Alzheimer's Disease; Dementia; Elderly; Behavior; Acute Pain
资金
- MSU Dept. of Family Medicine Pearl Aldrich Graduate Student Fellowship [RT083166-F5015]
- Blue Cross Blue Shield of Michigan Foundation [1981.SAP]
ObjectiveTo compare autonomic, behavioral, and subjective pain responses of patients with Alzheimer's disease (AD) to those of healthy seniors (HS). As few studies have examined patients with severe Alzheimer's disease (sAD), we emphasized inclusion of these patients together with mild/moderate Alzheimer's disease (mAD) patients to characterize pain responses potentially affected by disease severity. DesignA controlled cross-sectional study involving repeated measures behavioral pain testing. SettingAn outpatient clinical setting and local nursing facilities. SubjectsCommunity dwelling HS controls (N=33) and individuals with chart-confirmed diagnoses of AD (N=38, Diagnostic and Statistical Manual-IV criteria). MethodsHS and AD groups were compared in their responses to repeated applications of five pressure intensities (1-5 kg) on the distal forearm. Autonomic responses (heart rate [HR]), pain behaviors (vocal, facial, and bodily as scored by the Pain Assessment in Advanced Dementia [PAINAD] scale), and subjective pain ratings (Faces Pain Scale-Revised) were measured. ResultsHR responses to pressure stimuli were differentially affected based on AD severity: sAD patients had generally decreased HR reactivity compared with other groups (P<0.01). In contrast, pain behaviors were increased in AD regardless of severity (P<0.001), compared with HS, for all but the lowest pressure intensity. Increased behaviors occurred in all measured domains of the PAINAD (P<0.005). While sAD were unreliable subjective reporters, mAD patients (N=17) rated low level pressures as more painful than HS (P<0.01). ConclusionThese findings provide behavioral and subjective-report evidence of increased acute pain sensitivity in AD, which should be taken into consideration with respect to pain management across the spectrum of AD severity.
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