• W Duggleby and J Lander.
• J Pain Symptom Manage. 1994 Jan 1; 9 (1): 19-27.

AbstractThe purpose of this study was to assess older adults to determine (a) the course of postoperative pain, (b) influences of pain and analgesics on mental status, and (c) relationships among age, mental status and pain. Sixty adults, aged 50-80 yr, who had total hip replacement surgery were included in this study. All subjects had met a preoperative criterion for mental status. Data collection took place over 5 days following surgery. Pain intensity and distress were assessed three times a day for 5 days. Recalled night pain intensity, pain distress, and sleep disturbance from pain were assessed daily in the early morning prior to assessment of mental status. Although no within day or day-to-day pain patterns were observed, the greatest decreases in pain occurred during the first 2 days. Night pain also improved after the third day. One-third of subjects recorded one or more episodes where mental status declined below criterion after surgery. Multivariate analysis indicated that pain, not analgesic intake, predicted mental status decline. Age was not related to pain or mental status. In general, pain was poorly managed in this group of subjects. The results suggest an explanation for acute confusion in older patients after surgery and recommend improved pain management.

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