吳野環(huán)，張一，姚秋近，陳超，王涯，張瑜

重癥監(jiān)護病房患者認知功能評定工具的研究進展

吳野環(huán)，張一，姚秋近，陳超，王涯，張瑜

[摘要]譫妄和認知障礙在重癥監(jiān)護病房(ICU)中經(jīng)常出現(xiàn)。對于譫妄，美國重癥醫(yī)學臨床實踐指南推薦5個篩查用量表：ICU精神錯亂評定法(CAM-ICU)、重癥監(jiān)護譫妄篩查表(ICDSC)、譫妄認知測試(CTD)、護士用譫妄量表(Nu-DESC)和譫妄分級量表(DRS)。其中，CAM-ICU和ICDSC信度、效度、敏感性及特異性等最好，CTD和Nu-DESC次之，DRS最差。認知障礙的篩選和評定工具包括簡易精神狀態(tài)檢查(MMSE)、簡短精神狀態(tài)檢查(AMSE)、約翰-霍普斯金認知評定量表。約翰-霍普斯金認知評定量表是比較適合重癥監(jiān)護病房的量表之一，操作簡單，內(nèi)容全面，有較高的信度與效度。

[關鍵詞]重癥監(jiān)護病房；認知功能；評定；綜述

[本文著錄格式]吳野環(huán)，張一，姚秋近，等.重癥監(jiān)護病房患者認知功能評定工具的研究進展[J].中國康復理論與實踐, 2015, 21(11): 1287-1289.

CITED AS: Wu YH, Zhang Y, Yao QJ, et al. Toolsof cognitivefunction assessment used in intensivecareunit (review) [J]. Zhongguo Kangfu LilunYu Shijian, 2015, 21(11): 1287-1289.

許多重癥監(jiān)護病房(intensivecareunits, ICU)幸存患者在出院后常常遭受認知損害，進而導致肢體障礙、睡眠障礙以及心理壓力[1-2]。這些患者需要長期被照顧或需要使用一些輔助設備，從而導致生活質(zhì)量下降，并給家人或親屬帶來很大的心理壓力[3]。在ICU，譫妄非常常見，可達80%以上[4]，它能導致更嚴重的認知損害，使老年患者一半以上發(fā)展為癡呆[2,5-6]。床邊精神狀態(tài)評估是每個患者評估的重要組成部分。目前關于譫妄的評估和量表研究比較多，下面就譫妄和認知障礙在ICU中常用的量表進行闡述。

1　譫妄

譫妄(delirium)在ICU中是一個非常嚴重的問題，它與患者的住院時間及死亡率息息相關[7-8]。譫妄篩查對臨床至關重要。2013年，美國重癥醫(yī)學臨床實踐指南推薦5個篩查工具。

ICU精神錯亂評定法(Confusion Assessment Method Intensive Care Unit, CAM-ICU)基于精神疾病統(tǒng)計診斷手冊(The Diagnostic and Statistical Manual of Mental Disorders, DSM)Ⅲ版譫妄定義開發(fā)，主要評估其4個特點：急性發(fā)作、注意力不集中、意識水平的變化、思維紊亂[9-10]。其敏感性0.86，特異性0.93，測試時間<5min。Brummel等應用CAM-ICU量表評定譫妄[11]，敏感性和特異性較好。

重癥監(jiān)護譫妄篩查表(Intensive Care Delirium Screening Checklist, ICDSC)是基于DSM-Ⅳ版譫妄定義修訂，納入8個特點：意識水平的變化、注意力不集中、定向障礙、幻覺妄想精神障礙、精神運動多動缺陷障礙、言語增多和情緒障礙、睡眠-覺醒周期紊亂、癥狀變化[12]。其敏感性0.99，特異性0.64，每個項目評分分0、1分兩個結(jié)果，總分8分，≥4分即可診斷，測試時間不定。

譫妄認知測試(Cognitive Test for Delirium, CTD)是基于DSM-Ⅲ譫妄定義開發(fā)，包括定向、注意力、記憶力、理解力和反應性5個方面[12-13]。敏感性0.947，特異性0.988，每個項目評分0～6分，總分30分，≤11分即可診斷，測試時間10～15 min。

護士用譫妄量表(Nursing Delirium Scale, Nu-DESC)是基于DSM-Ⅳ譫妄定義開發(fā)，包括定向障礙、異常行為、交流、幻覺及精神運動缺陷[14]。其敏感性0.83，特異性0.81，每個項目評分為0～2分，≥2分即可診斷譫妄，測試時間1 min。測試時間短，敏感性及特異性相對較高，適合護理人員使用。

譫妄分級量表(Delirium Rating Scale, DRS)包含13個關于患者譫妄嚴重性的項目和3個診斷項目，敏感性0.92，特異性0.93，每個項目評分0～3分，總分46分，≥15分即可診斷，測試時間不定。

在這5個量表中，信度、效度、敏感性及特異性等指標檢測，CAM-ICU和ICDSC表現(xiàn)最好，CTD和Nu-DESC次之，DRS最差。

2013年美國重癥醫(yī)學臨床實踐指南推薦在ICU中使用CAM-ICU和ICDSC篩查譫妄[4]，兩個量表具有A級證據(jù)[15]。Meta分析提示，CAM-ICU具有很高的特異性，適合診斷譫妄，而ICDSC具有很強的敏感性，更能排除譫妄[16-17]。

2　簡易精神狀態(tài)檢查

簡易精神狀態(tài)檢查(Mini-Mental State Examination, MMSE) 是1975年由Folstein編制，適用于老年認知障礙的一種篩查工具[18]。它是目前最具影響的認知障礙篩選工具之一。MMSE共19項，包括時間定向、地點定向、語言即刻記憶、注意、計算、短程記憶、物體命名、語言復述、閱讀理解、語言理解、言語表達、圖形描畫[19-20]。MMSE的敏感性76%～81%[21-23]，特異性82%[24]。因其不能排除年齡、學歷及疾病時間等因素的影響，敏感性不可能很高。

其優(yōu)點為：①對病情惡化有很高敏感性；②大部分項目對認知障礙敏感；③能區(qū)分癡呆的兩種類型[21]。Jackson等用MMSE觀察53例重癥患者3～8 d，發(fā)現(xiàn)MMSE可以對譫妄進行篩查，但建議聯(lián)合其他量表一起使用[25]。Radtke等在ICU術后認知障礙的研究中使用MMSE評價患者認知功能，提示其對ICU患者認知障礙的篩查有一定意義[26]。目前該量表主要適用于老年患者，癡呆、腦卒中、多發(fā)性硬化等神經(jīng)系統(tǒng)疾病患者，很少應用于ICU患者[27]。

3　簡短精神狀態(tài)檢查

簡短精神狀態(tài)檢查(Abbreviated Mental Status Examination, AMSE) 1988年由Merigian等根據(jù)Dick編寫的應用于急診科患者30項檢查精神狀態(tài)發(fā)展而來[28]。AMSE主要包括10個項目，分為時間定向、地點定向、計算力，記憶力以及執(zhí)行功能5方面內(nèi)容，每個項目0～1分，總分10分，8分以上為正常者。此量表為認知障礙篩查量表，使用比較方便，一般在5 min左右完成，非常適合在急診科和ICU中使用。目前國內(nèi)無漢譯版本[29]。

Merigian等的研究表明，此量表與格拉斯哥昏迷量表(Glasgow Coma Scale, GCS)相關性極高，對認知障礙的篩查比GCS敏感，是用于ICU的很好篩查工具[28]。

4　約翰-霍普斯金認知評定量表

約翰-霍普斯金認知評定量表(the Johns Hopkins Adapted Cognitive Exam)由Lewin和他的團隊以MMSE和Addenbrooke認知檢查(Addenbrooke'sCognitiveExam,ACE)兩個量表為基礎開發(fā)的[30]，特別適用于ICU患者認知障礙的篩查，國外研究，其信度為0.99，效度為0.83[1,3,31]，比MMSE高出許多。內(nèi)容主要包括定向力、言語、模仿能力、注意力與計算力以及記憶力5方面，總分100分，包括定向力30分，言語21分，模仿能力6分，注意力與計算力22分，記憶力21分[32]。目前國外已經(jīng)廣泛應用于臨床ICU[33]，國內(nèi)尚無中文譯本。

5　結(jié)語

目前臨床上越來越多的醫(yī)生開始關注認知障礙，但往往關注病情相對穩(wěn)定時患者的認知障礙，臨床應用的大部分認知功能評價量表也針對于此。適用于ICU或急診科患者認知功能的評價量表極少，約翰-霍普斯金認知評定量表是其中之一，它能應用于ICU或急診科對認知障礙的篩查或評估，國外研究顯示有很好的信度和效度，值得進一步研究。

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·綜述·

Toolsof CognitiveFunctionAssessment Usedin IntensiveCareUnit (review)

WU Ye-huan, ZHANGYi, YAOQiu-jin, CHENChao, WANGYa, ZHANGYu
Department of Neurosurgery, TheFirst People'sHospital of Changzhou, Changzhou, Jiangsu213003, China

Abstract:Delirium and cognitiveimpairment arecommon in theintensivecareunits(ICU). The Confusion Assessment Method Intensive Care Unit (CAM-ICU), Intensive Care Delirium Screening Checklist (ICDSC), Cognitive Test for Delirium (CTD), Nursing Delirium Scale(Nu-DESC) and Delirium Rating Scale(DRS) arerecommended to assessdelirium. CAM-ICU and ICDSC arethebest in thereliability, validity, sensitivity and specification. Mini-Mental State Examination (MMSE), Abbreviated Mental Status Examination (AMSE), the Johns HopkinsAdapted Cognitive Exam areused commonly for cognitiveimpairment, and Johns HopkinsAdapted Cognitive Exam isone of thesuitablescalesfor ICU asit issimple, comprehensive, andwithhigher reliability andvalidity.

Keywords:intensivecareunits; cognitivefunction; assessment; review

(收稿日期：2015-04-07修回日期：2015-07-07)

作者簡介：作者單位：常州市第一人民醫(yī)院神經(jīng)外科，江蘇常州市213003。吳野環(huán)(1986-)，男，漢族，黑龍江明水縣人，碩士，醫(yī)師，主要研究方向：顱腦創(chuàng)傷及腦血管病的康復評定與治療。通訊作者：張一。E-mail: zhangyizhe1975@aliyun.com。

DOI:10.3969/j.issn.1006-9771.2015.11.011

[中圖分類號]R749

[文獻標識碼]A

[文章編號]1006-9771(2015)11-1287-03