Journal of Hospice and Palliative Care

Korean Society for Hospice and Palliative Care (한국호스피스완화의료학회)
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Risk Factors Related to Development of Delirium in Hospice Patients

호스피스 병동의 암환자에서 섬망 발생 위험 요인

  • Ko, Hae Jin (Department of Family Medicine, Kyungpook National University Hospital, Kyungpook National University School of Medicine) ;
  • Youn, Chang Ho (Department of Family Medicine, Kyungpook National University Hospital, Kyungpook National University School of Medicine) ;
  • Chung, Seung Eun (Department of Family Medicine, Kyungpook National University Hospital, Kyungpook National University School of Medicine) ;
  • Kim, A Sol (Department of Family Medicine, Kyungpook National University Hospital, Kyungpook National University School of Medicine) ;
  • Kim, Hyo Min (Department of Family Medicine, Kyungpook National University Medical Center)
  • 고혜진 (경북대학교 의학전문대학원 경북대학교병원 가정의학과) ;
  • 윤창호 (경북대학교 의학전문대학원 경북대학교병원 가정의학과) ;
  • 정승은 (경북대학교 의학전문대학원 경북대학교병원 가정의학과) ;
  • 김아솔 (경북대학교 의학전문대학원 경북대학교병원 가정의학과) ;
  • 김효민 (칠곡경북대학교병원 가정의학과)
  • Received : 2014.02.24
  • Accepted : 2014.07.17
  • Published : 2014.09.01
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Abstract

Purpose: Delirium is a common and serious neuropsychiatric complication among terminally ill cancer patients. We investigated risk factors related to the development of delirium among hospice care patients. Methods: Between May 2011 and September 2012, we included patients who were mentally alert and had no psychiatric disease or drug addiction at the hospice ward of two local hospitals. Among them, participants who had been diagnosed with delirium by two doctors according to the DSM-IV (Diagnostic and Statistical Manual of Mental Disorders-4th edition) criteria were grouped as Delirium Group. We analyzed results of psychometric and other laboratory tests performed at the time of patient's admission - psychometric tests included cognitive function (mini-mental status examination, MMSE), depression (Beck Depression Inventory, BDI), anxiety, and insomnia (Insomnia Severity Index, ISI). Logistic regression analysis was used to compare delirium and the related factors. Cox's proportional hazard model was performed using significant factors of logistic regression analysis. Results: Of the 96 patients who met the inclusion criteria, 41 (42.7%) developed delirium. According to the logistic regression analysis, primary cancer site, cognitive impairment (MMSE < 24), depression ($BDI{\geq}16$), and insomnia ($ISI{\geq}15$) were significant factors related to delirium. Among the four factors, depression (OR 5.130; 95% CI, 2.009~13.097) and cognitive impairment (OR 5.130; 95% CI, 2.009~13.097) were found significant using Cox's proportional hazard model. Conclusion: The development of delirium was significantly related to depression and cognitive impairment among patients receiving hospice care. It is necessary to carefully monitor depression and cognitive function in hospice care.

목적: 섬망은 말기암환자에서 생길 수 있는 중요한 합병증으로 임상적으로나 삶의 질 적인 측면에서 매우 중요한 문제이다. 이에 호스피스 병동에 입원한 말기암 환자에서 섬망 발생과 관계된 위험 요인들을 알고자 연구를 시행하였다. 방법: 2011년 5월부터 2012년 9월까지 일개 지역 두개의 종합병원 내 호스피스 병동에 입원한 환자 중 의식이 명료하고 다른 정신과적 질환이나 약물 중독이 없는 환자를 대상으로 전향적으로 추적하여 섬망 발생 여부를 확인하였다. DSM-IV 진단기준에 맞게 2명의 의사에 의해 진단된 경우 섬망군으로 분류하였다. 입원 시 인지기능(mini-mental status examination, MMSE), 우울 점수(Beck depression inventory, BDI), 불안 점수, 불면 척도(Insomnia Severity Index, ISI), 혈액검사 결과와 섬망 발생 여부를 로지스틱 회귀분석으로 비교하고, 유의한 항목에 대해 Cox의 비례위험모형으로 교차비를 구하였다. 결과: 선정기준에 부합하는 연구 대상자 96명 중 41명(42.7%)에서 섬망이 발생하였다. 로지스틱 회귀분석 결과 일차 암 위치, 인지기능 장애(MMSE < 24), 우울($BDI{\geq}16$), 불면($ISI{\geq}15$)의 Odds ratio (OR)이 통계적으로 유의한 결과를 보였다. 이들 4가지 인자에 대해 입력 방법을 이용해 시행한 Cox 회귀분석 결과, 우울의 OR 5.130(95% CI 2.009~13.097), 인지기능저하의 OR 5.130 (95% CI 2.009~13.097)로 나타났다. 결론: 호스피스 병동에 입원한 말기암환자에서 우울하거나 인지기능 장애가 있을 경우 섬망 발생의 위험이 유의하게 높았다. 호스피스 환자에게 우울이나 인지기능에 대한 주의 깊은 관찰이 필요할 것이다.

Keywords

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