Terminal Anguish among Delirious Patients with Advanced Cancer: A Multicenter, Prospective, Observational Study

Abstract

Objective: This study aimed to reveal the prevalence and characteristics of anguish among delirious patients with advanced cancer receiving specialized palliative care services. Methods: We conducted a subanalysis of a multicenter, prospective, observational study at 14 inpatient palliative care units and 10 general wards that offered psycho-oncology consultation service in Japan. We consecutively enrolled the patients with advanced cancer who were diagnosed with delirium and prescribed antipsychotics. Palliative care specialists decided whether patients suffered from anguish or not. We assessed patients’ background and severity of delirium with the Delirium Rating Scale-Revised (DRS-R-98). Results: Of 818 enrolled patients, 99 (12.1%) suffered from anguish. We observed a significant difference in the mean age (68.9±12.6 vs. 72.1±11.2, p=0.009), prevalence of dementia (2% vs. 10.4%, p=0.005) between patients with anguish and those without anguish. Patients with anguish had lower DRS-R-98 total scores before medication than those without anguish (15.3±8.1 vs. 17.3±7.8, p=0.018), but higher severity score in lability of affect (1.2±0.8 vs 1.0±0.9, p=0.023). Conclusions: The results of this study suggested that patients with anguish tend to be younger, mostly do not have dementia, and have lower delirium severity score but higher score in lability of affect. Nevertheless, further research, investigating appropriate evaluations and medical interventions for patients with anguish is warranted.