Personalized sedation goal for agitated delirium in patients with cancer: Balancing comfort and communication

Background: Agitated delirium is common and highly distressing. Medications are often needed to reduce agitation, but it is unclear what the desired level of sedation is. This study assessed personalized sedation goals (PSGs) and their predictors for patients in a delirium clinical trial and in clinical vignettes. Methods: This was a preplanned secondary analysis of a double-blind randomized clinical trial examining the sedative effect of chlorpromazine and/or haloperidol in patients with agitated delirium. At the baseline, caregivers and nurses were independently asked to select the PSG for the trial patient from 5 choices corresponding to Richmond Agitation Sedation Scale (RASS) scores of 0 or higher (no sedation), –1 to –2, –3, –4, and –5 (deep sedation). Respondents also selected a PSG for 6 vignettes that differed by the level of agitation, ability to communicate, and survival. Results: Forty-two caregivers and 39 nurses answered questions regarding PSGs. For the trial patient, caregivers preferred RASS scores of –1 to –2 most often (36%), whereas nurses preferred an RASS score of –3 most often (51 %). Caregivers were significantly more likely than nurses to choose lighter sedation (odds ratio [OR], 4.8; P =.01) despite reporting greater delirium-related distress (P =.0006). Patients were undersedated 33% to 53% of the time and oversedated 0% to 15% of the time according to the PSG response criteria. In the case vignettes, deeper sedation was preferred by nurses (P <.0001) and for patients who were unable to communicate (OR, 3.1-4.4; P <.0001) and had a shorter life expectancy (OR, 1.7; P =.002). Conclusions: Caregivers often preferred lighter sedation than nurses. Many patients were undersedated in comparison with caregivers' PSGs, and this highlights room for improvement. Lay Summary: In the last days of life, many patients with cancer develop delirium and become restless/agitated; this can be highly distressing. Caregivers and physicians alike are often concerned about the use of sedatives for agitated delirium and try to find a balance between maximizing comfort and maintaining communication. This study examined the concept of a personalized sedation goal for setting an individualized target for the level of sedation. Caregivers often preferred lighter sedation than nurses. Many patients were undersedated in comparison with caregivers' stated goals, and this highlights room for improvement.