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經(jīng)皮穴位電刺激對(duì)老年患者腹腔鏡直腸癌切除術(shù)后認(rèn)知功能的影響研究

2015-02-21 06:38:40倪劍武蔣柳明周一敏莫云長王均爐
中國全科醫(yī)學(xué) 2015年12期
關(guān)鍵詞:經(jīng)皮直腸癌穴位

倪劍武,蔣柳明,周一敏,莫云長,吳 群,王均爐

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經(jīng)皮穴位電刺激對(duì)老年患者腹腔鏡直腸癌切除術(shù)后認(rèn)知功能的影響研究

倪劍武,蔣柳明,周一敏,莫云長,吳 群,王均爐

目的 探討經(jīng)皮穴位電刺激(TAES)對(duì)老年患者腹腔鏡直腸癌切除術(shù)后認(rèn)知功能的影響及其可能的機(jī)制。方法 選擇2011年6月—2014年5月溫州醫(yī)科大學(xué)附屬第一醫(yī)院腫瘤外科收治的腹腔鏡下直腸癌Dixon手術(shù)的老年患者60例,采用隨機(jī)數(shù)字表法分為對(duì)照組30例和TAES組30例。兩組患者均選擇全憑靜脈麻醉,TAES組患者麻醉誘導(dǎo)前30 min至術(shù)畢加用TAES進(jìn)行干預(yù)。在圍術(shù)期使用精神狀態(tài)簡易速檢表(MMSE)對(duì)患者認(rèn)知功能進(jìn)行評(píng)分,并在不同時(shí)間點(diǎn)檢測患者血清超氧化物歧化酶(SOD)、丙二醛(MDA)、S100β水平。結(jié)果 MMSE評(píng)分治療方法與時(shí)間無交互作用(P>0.05);組間比較,差異有統(tǒng)計(jì)學(xué)意義(P<0.05);時(shí)間間比較,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。術(shù)后1、3、5 d TAES組MMSE評(píng)分高于對(duì)照組(P<0.05)。術(shù)后1、3 d TAES組患者POCD嚴(yán)重程度低于對(duì)照組(P<0.05),術(shù)后5、7 d兩組患者POCD嚴(yán)重程度比較,差異無統(tǒng)計(jì)學(xué)意義(P>0.05)。SOD、MDA、S100β水平治療方法與時(shí)間無交互作用(P>0.05);組間比較,差異有統(tǒng)計(jì)學(xué)意義(P<0.05);時(shí)間間比較,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。術(shù)畢,術(shù)后2、6、24 h TAES組SOD水平高于對(duì)照組(P<0.05);術(shù)后2、6、24 h TAES組MDA、S100β水平低于對(duì)照組(P<0.05)。結(jié)論 老年患者腹腔鏡直腸癌切除導(dǎo)致術(shù)后認(rèn)知功能障礙,TAES通過增加SOD水平、抑制MDA聚集、減少S100β釋放,保護(hù)腦功能,可以明顯減少患者術(shù)后認(rèn)知功能障礙的發(fā)生。

結(jié)直腸腫瘤;認(rèn)知障礙;腹腔鏡檢查;電刺激療法

倪劍武,蔣柳明,周一敏,等.經(jīng)皮穴位電刺激對(duì)老年患者腹腔鏡直腸癌切除術(shù)后認(rèn)知功能的影響研究[J].中國全科醫(yī)學(xué),2015,18(12):1390-1395.[www.chinagp.net]

Ni JW,Jiang LM,Zhou YM,et al.Effect of transcutaneous acupoint electrical stimulation on postoperative cognitive function in elderly patients undergoing laparoscopic resection of rectal cancer[J].Chinese General Practice,2015,18(12):1390-1395.

術(shù)后認(rèn)知功能障礙(postoperative cognitive dysfunction,POCD)是外科手術(shù)后常見的腦功能紊亂綜合征,多見于老年患者,目前發(fā)病機(jī)制仍不清楚,主要表現(xiàn)為認(rèn)知、定向、思維、記憶功能障礙,嚴(yán)重時(shí)甚至出現(xiàn)精神錯(cuò)亂和人格異常,導(dǎo)致患者術(shù)后康復(fù)延遲、并發(fā)癥增多、生活質(zhì)量明顯下降[1]。經(jīng)皮穴位電刺激(transcutanous acupoint electric stimulation,TAES)是一種經(jīng)皮神經(jīng)電刺激與針灸穴位療法結(jié)合的新型針灸治療方法,用于顱腦手術(shù),具有調(diào)節(jié)免疫功能、保護(hù)腦功能的作用[2]。本研究觀察TAES對(duì)老年患者腹腔鏡直腸癌切除POCD及其氧化應(yīng)激的影響,探討TAES是否對(duì)老年患者腹腔鏡直腸癌切除具有腦保護(hù)作用,為臨床上預(yù)防POCD的發(fā)生提供新思路。

1 資料與方法

1.1 一般資料 選擇2011年6月—2014年5月溫州醫(yī)科大學(xué)附屬第一醫(yī)院腫瘤外科收治的腹腔鏡下直腸癌Dixon手術(shù)的老年患者60例為研究對(duì)象,其中男38例,女22例;年齡65~78歲,平均69.0歲;美國麻醉醫(yī)師協(xié)會(huì)(ASA)分級(jí)Ⅰ~Ⅱ級(jí);體質(zhì)量46~75 kg。排除標(biāo)準(zhǔn):(1)術(shù)后由于出血、吻合口漏等手術(shù)因素而再次急診手術(shù)。(2)既往神經(jīng)系統(tǒng)疾病史,如腦梗死等;(3)視覺及聽覺障礙,如中耳疾病等;(4)精神或情感疾病,如抑郁癥等;(5)醫(yī)患交流有困難,如文盲等。本研究已經(jīng)醫(yī)院醫(yī)學(xué)倫理委員會(huì)批準(zhǔn),所有患者簽署知情同意書。采用隨機(jī)數(shù)字表法將患者分為對(duì)照組和TAES組,每組30例。兩組患者性別、年齡、體質(zhì)量、ASA分級(jí)、手術(shù)時(shí)間、出血量比較,差異無統(tǒng)計(jì)學(xué)意義(P>0.05,見表1)。

1.2 麻醉方法 所有患者未術(shù)前用藥,入室后開放外周靜脈后注射咪達(dá)唑侖2 mg和鹽酸戊乙奎醚注射液(長托寧)0.5 mg,常規(guī)監(jiān)測心電圖、無創(chuàng)血壓、心率、脈搏血氧飽和度(SPO2)。局部麻醉下行右側(cè)頸內(nèi)靜脈穿刺置管及左側(cè)橈動(dòng)脈穿刺置管,分別供輸液、采集血標(biāo)本及監(jiān)測有創(chuàng)動(dòng)脈血壓所用?;颊呔x擇全憑靜脈麻醉,依次靜脈注射異丙酚1~2 mg/kg,舒芬太尼5 μg/kg,維庫溴銨0.1 mg/kg行麻醉誘導(dǎo),氣管插管后接麻醉機(jī)行機(jī)械通氣,吸入純氧,設(shè)定呼吸頻率12~14次/min,潮氣量8~10 ml/kg,吸呼比為1∶2,維持呼氣末二氧化碳濃度(PETCO2)30~35 mm Hg(1 mm Hg=0.133 kPa)。術(shù)中異丙酚和瑞芬太尼靶控輸注(TCI)(靶濃度分別設(shè)定為2~3 μg/ml和4 ng/ml)維持麻醉,間斷追加維庫溴銨0.04 mg/kg維持肌松,術(shù)中兩組患者均用腦電雙頻指數(shù)(BIS)監(jiān)護(hù)儀(美國Aspect)監(jiān)測麻醉深度(BIS值控制在40~60)。麻醉平穩(wěn)后使用Olympus氣腹機(jī)向腹腔內(nèi)充入CO2,壓力維持在18~20 kPa(1 kPa=7.5 mm Hg),體位由平臥位轉(zhuǎn)為頭低足高截石位(15°~30°)。術(shù)中維持血流動(dòng)力學(xué)穩(wěn)定,控制患者血壓波動(dòng)范圍在術(shù)前基礎(chǔ)值的±25%以內(nèi),術(shù)畢以新斯的明和阿托品拮抗殘余肌松作用,患者完全清醒后拔除氣管導(dǎo)管,術(shù)后兩組患者均使用舒芬太尼復(fù)合氟比洛芬脂進(jìn)行術(shù)后靜脈自控鎮(zhèn)痛(PCIA)。

1.3 TAES TAES組在麻醉誘導(dǎo)前30 min開始至術(shù)畢持續(xù)進(jìn)行TAES。具體實(shí)施方法:麻醉誘導(dǎo)前30 min,根據(jù)祖國傳統(tǒng)醫(yī)學(xué)“醒腦開竅針法”的取穴原則,選取百會(huì)穴和兩側(cè)內(nèi)關(guān)、足三里、三陰交穴,接LH402韓氏經(jīng)皮穴位刺激儀(北京萬眾普康醫(yī)藥科技發(fā)展有限公司);刺激方式采用2~100 Hz的疏密波,刺激強(qiáng)度從1 mA開始,逐步加大電流強(qiáng)度以患者能耐受的最大電流為適度(在8~12 mA之間調(diào)節(jié))。術(shù)中保持TAES刺激方式、強(qiáng)度不改變,切口縫合完畢時(shí)關(guān)閉LH402韓式經(jīng)皮穴位刺激儀。對(duì)照組患者均不給予TAES。

1.4 監(jiān)測項(xiàng)目

1.4.1 認(rèn)知功能評(píng)估 在麻醉前、術(shù)后1、3、5、7 d分別采用精神狀態(tài)簡易速檢表(MMSE)對(duì)認(rèn)知功能進(jìn)行評(píng)分[3]。MMSE共包括30項(xiàng)測試內(nèi)容,每項(xiàng)1分,分別測定患者的時(shí)間及地點(diǎn)定向力、記憶力、語言能力、注意力、計(jì)算能力等。MMSE評(píng)分越高說明認(rèn)知功能越完善,最高得分為30分,24~27分為輕度認(rèn)知功能障礙,19~23分為中度認(rèn)知功能障礙,0~18分為重度認(rèn)知功能障礙,根據(jù)MMSE評(píng)分計(jì)算兩組患者POCD嚴(yán)重程度。當(dāng)術(shù)后MMSE評(píng)分低于術(shù)前基礎(chǔ)值2分,則POCD診斷成立[4]。測試均由同一名醫(yī)護(hù)人員完成。

1.4.2 超氧化物歧化酶(SOD)、丙二醛(MDA)、S100β水平檢測 分別在麻醉前、術(shù)畢及術(shù)后2、6、24 h抽取頸內(nèi)靜脈血3 ml。在室溫下靜置30 min,3 000 r/min(離心半徑10 cm)離心10 min,取上層血清,置-80 ℃冰箱凍存,用于檢測SOD、MDA、S100β水平。分別采用黃嘌呤酶氧化法和生物化學(xué)發(fā)光法(試劑盒由南京建成生物工程研究所提供)檢測SOD、MDA水平。采用酶聯(lián)免疫吸附法(試劑盒由大連泛邦化工技術(shù)開發(fā)有限公司提供)檢測S100β水平。所有檢測操作均嚴(yán)格按照說明書進(jìn)行。

2 結(jié)果

2.1 兩組患者M(jìn)MSE評(píng)分比較 MMSE評(píng)分治療方法與時(shí)間無交互作用,差異無統(tǒng)計(jì)學(xué)意義(P>0.05);組間比較,差異有統(tǒng)計(jì)學(xué)意義(P<0.05);時(shí)間間比較,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。術(shù)后1、3、5 d TAES組MMSE評(píng)分高于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義(t=7.741,t=5.243,t=5.160,P<0.05);術(shù)后7 d兩組MMSE評(píng)分比較,差異無統(tǒng)計(jì)學(xué)意義(t=0.929,P>0.05,見表2)。

2.2 兩組患者POCD嚴(yán)重程度比較 術(shù)后1、3 d TAES組患者POCD嚴(yán)重程度低于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義(P<0.05);術(shù)后5、7 d兩組患者POCD嚴(yán)重程度比較,差異無統(tǒng)計(jì)學(xué)意義(P>0.05,見表3)。

2.3 兩組患者SOD、MDA、S100β水平比較 SOD、MDA、S100β治療方法與時(shí)間無交互作用,差異無統(tǒng)計(jì)學(xué)意義(P>0.05);組間比較,差異有統(tǒng)計(jì)學(xué)意義(P<0.05);時(shí)間間比較,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。術(shù)畢,術(shù)后2、6、24 h TAES組SOD水平高于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義(t=3.097,t=2.478,t=2.411,t=2.813,P<0.05);術(shù)后2、6、24 h TAES組MDA、S100β水平低于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義(t=2.450,t=3.690,t=3.130;t=3.468,t=3.365,t=2.850,P<0.05,見表4)。

3 討論

POCD病因復(fù)雜,確切的發(fā)病機(jī)制尚不清楚,高血壓、高血糖、腦梗死等基礎(chǔ)性疾病和高齡是比較常見的易發(fā)因素,促發(fā)因素有應(yīng)激反應(yīng)、低氧血癥、低血壓、術(shù)中出血和輸血、電解質(zhì)紊亂等[1]。因此,POCD可能是在中樞神經(jīng)系統(tǒng)老化的基礎(chǔ)上,由麻醉和手術(shù)等外界因素誘發(fā)或加重,其發(fā)病機(jī)制是多種因素的綜合作用。文獻(xiàn)報(bào)道,老年患者由于臟器功能不全、中樞神經(jīng)系統(tǒng)退化、創(chuàng)傷應(yīng)激的承受能力下降,術(shù)后早期POCD的發(fā)生率高達(dá)3%~61%[5]。如何預(yù)防與減少老年患者POCD已經(jīng)成為臨床上一個(gè)亟待解決的問題。國外學(xué)者研究發(fā)現(xiàn),較深的麻醉深度可以降低患者POCD的發(fā)生[6],而吸入麻醉由于抑制中樞膽堿能系統(tǒng)的功能使患者更易發(fā)生POCD[7]。本研究中采用BIS監(jiān)護(hù)儀監(jiān)測麻醉深度,維持BIS值在40~60,患者均使用全憑靜脈麻醉,術(shù)中維持患者血流動(dòng)力學(xué)穩(wěn)定,以期盡量減少麻醉對(duì)POCD發(fā)生的影響。

表1 兩組患者一般資料比較

注:TAES=經(jīng)皮穴位電刺激,ASA=美國麻醉醫(yī)師協(xié)會(huì);*為χ2值

Table 2 Comparison of MMSE scores at different time points between two groups of patients

組別例數(shù)麻醉前術(shù)后1d術(shù)后3d術(shù)后5d術(shù)后7d對(duì)照組3027.4±1.319.3±1.422.6±1.524.2±1.326.8±1.3TAES組3027.6±1.122.0±1.3*24.5±1.3*26.0±1.4*27.1±1.2F值F交互=3.45,F組間=19.57,F時(shí)間=86.01P值P交互=0.109,P組間<0.001,P時(shí)間<0.001

注:與對(duì)照組比較,*P<0.05

表3 兩組患者POCD嚴(yán)重程度比較(例)

Table 3 Comparison of severity degree of POCD after surgery between two groups of patients

組別例數(shù)術(shù)后1d無輕中重術(shù)后3d無輕中重術(shù)后5d無輕中重術(shù)后7d無輕中重對(duì)照組3014592154922036124411TAES組3022341225302442026310u值2.0792.2041.3720.719P值<0.05<0.05>0.05>0.05

表4 兩組患者不同時(shí)間SOD、MDA、S100β水平比較

注:SOD=超氧化物歧化酶,MDA=丙二醛;與對(duì)照組比較,*P<0.05

為了預(yù)防或減少老年患者POCD的發(fā)生,除了提高手術(shù)麻醉技術(shù)和加強(qiáng)圍術(shù)期患者護(hù)理外,術(shù)中重視腦保護(hù)也是一個(gè)重要的防范途徑。近年來,臨床試驗(yàn)證實(shí),電刺激療法在腦保護(hù)中具有明顯的療效,電針處理可以誘導(dǎo)腦細(xì)胞抗凋亡、抑制炎性反應(yīng)[8],能夠上調(diào)缺血再灌注后SOD的表達(dá),減輕腦缺血再灌注損傷,具有腦保護(hù)作用[9]。TAES是一種經(jīng)皮神經(jīng)電刺激與針灸穴位療法結(jié)合的新型針灸治療方法,與電針均是通過一定頻率、強(qiáng)度的電流對(duì)穴位點(diǎn)進(jìn)行刺激,區(qū)別在于傳遞電流的方式,電針通過插在穴位點(diǎn)的針傳遞電流,而TAES則是通過貼在穴位上的電極片傳遞電流。同時(shí)TAES還具有無創(chuàng)性特點(diǎn),使患者更容易接受,在許多臨床中已替代電針治療。有證據(jù)表明,TAES和電針對(duì)同一腦功能區(qū)產(chǎn)生相似的調(diào)節(jié)作用[10],相同穴位的TAES處理與傳統(tǒng)電針刺激鎮(zhèn)痛的效果無差異[11]。可以預(yù)期TAES今后將成為臨床上防范POCD發(fā)生的有效手段[12]。

POCD臨床表現(xiàn)屬于中醫(yī)“癡呆”“善忘”等范疇,故治法應(yīng)以“開竅醒腦”“通經(jīng)活絡(luò)”為主,根據(jù)祖國傳統(tǒng)醫(yī)學(xué)“醒腦開竅針法”的取穴原則,TAES選取百會(huì)、內(nèi)關(guān)、足三里、三陰交穴[13]。百會(huì)穴為督脈之要穴,是諸陽之會(huì),具有提升陽氣、開竅啟閉、醒腦安神等功效。內(nèi)關(guān)穴屬手厥陰經(jīng)之絡(luò)穴,又為八脈交會(huì)之穴,具有寧心安神、疏通氣血、調(diào)節(jié)臟腑等功效。足三里穴是足陽明胃經(jīng)的主要穴位之一,具有調(diào)理脾胃、補(bǔ)中益氣、通經(jīng)活絡(luò)、疏風(fēng)化濕、扶正祛邪之功能。三陰交穴屬脾經(jīng)、為足三陰經(jīng)之交會(huì),具有滋補(bǔ)肝腎、行氣活血、安神助眠等功效?,F(xiàn)代醫(yī)學(xué)臨床試驗(yàn)證實(shí),針刺百會(huì)、內(nèi)關(guān)穴可增強(qiáng)腦血流量,改善腦代謝功能,增強(qiáng)學(xué)習(xí)記憶功能[14];針刺足三里穴可以激活大腦顳葉為主的大部分區(qū)域,可以廣泛應(yīng)用于運(yùn)動(dòng)感覺障礙、認(rèn)知功能障礙等中樞神經(jīng)系統(tǒng)病變[15];針刺三陰交穴能夠引起大腦特定區(qū)域葡萄糖代謝出現(xiàn)不同變化,在調(diào)節(jié)腦功能方面起重要作用[16]。本課題組前期的研究也發(fā)現(xiàn),在顱腦手術(shù)中對(duì)足三里、三陰交、風(fēng)池穴等穴位進(jìn)行TAES可以減少吸入麻醉藥的用量,降低圍術(shù)期應(yīng)激反應(yīng),降低腦組織氧、糖代謝,具有保護(hù)腦功能效用[17]。在腹腔鏡直腸癌切除手術(shù)過程中,氣腹和體位對(duì)患者腦氧含量及腦血流有明顯影響,可以導(dǎo)致腦血流過度灌注和腦組織氧供需失衡[18],從而對(duì)患者腦功能產(chǎn)生一定程度的不良影響。本研究結(jié)果顯示,術(shù)后1、3、5 d TAES組MMSE評(píng)分高于對(duì)照組,術(shù)后7 d MMSE評(píng)分基本均得到了恢復(fù)。根據(jù)MMSE評(píng)分計(jì)算兩組患者POCD嚴(yán)重程度,術(shù)后1、3 d對(duì)照組患者發(fā)生POCD嚴(yán)重程度高于TAES組,術(shù)后5、7 d兩組患者POCD嚴(yán)重程度無差別。表明TAES對(duì)老年患者腹腔鏡直腸癌切除POCD具有保護(hù)作用,可以減少患者早期POCD的發(fā)生,減輕POCD嚴(yán)重程度。

近年來,有關(guān)研究發(fā)現(xiàn),氧自由基在POCD發(fā)生和發(fā)展中具有重要意義,活性氧損傷是導(dǎo)致POCD發(fā)生的重要機(jī)制[19]。SOD是體內(nèi)重要的抗氧化酶,可以清除氧自由基,阻斷脂質(zhì)過氧化連鎖反應(yīng),減少腦缺血再灌注損傷。MDA是氧自由基引發(fā)生物膜中不飽和脂肪酸過氧化反應(yīng)的代謝產(chǎn)物,可以間接反映腦組織損傷程度。有研究發(fā)現(xiàn),增強(qiáng)SOD活性、降低MDA水平,通過發(fā)揮抗氧化作用,可以改善血管性癡呆患者的認(rèn)知功能[20]。S100β主要由神經(jīng)膠質(zhì)細(xì)胞合成和分泌,在血漿中的出現(xiàn)和其水平的高低能特異性反映神經(jīng)元的破壞及程度,并和POCD的發(fā)生呈正相關(guān)[21]。李偉等[22]研究表明,氧化應(yīng)激可以促進(jìn)全身麻醉術(shù)后炎性反應(yīng),增加患者POCD發(fā)生率,而氧自由基清除劑可以有效降低氧化應(yīng)激反應(yīng)。本課題組前期研究也發(fā)現(xiàn),在顱腦手術(shù)中應(yīng)用TAES可以增加SOD水平、降低MDA水平、減少脂質(zhì)過氧化損傷,起到腦保護(hù)作用,從而改善患者POCD[3]。本研究中,兩組患者SOD水平術(shù)后均下降,但TAES組患者下降的幅度低于對(duì)照組,術(shù)后2、6、24 h TAES組患者M(jìn)DA、S100β水平低于對(duì)照組。因此,推斷腹腔鏡直腸癌切除POCD的發(fā)生可能與氧化應(yīng)激有關(guān),而TAES則通過調(diào)控氧化和抗氧化之間的平衡、減少中樞神經(jīng)系統(tǒng)損傷而具有腦保護(hù)作用。

綜上所述,老年患者腹腔鏡直腸癌切除可以導(dǎo)致POCD,TAES通過增加SOD水平、抑制MDA聚集、減少S100β釋放保護(hù)腦功能,可以明顯減少患者POCD的發(fā)生。本研究仍有許多不足之處,如入選樣本量較少,TAES時(shí)間僅限于麻醉前30 min開始至術(shù)畢,未進(jìn)行隨訪觀察患者遠(yuǎn)期認(rèn)知功能,對(duì)TAES腦保護(hù)的分子機(jī)制未進(jìn)行深一步的研究,這些不足尚需在今后研究中改善。

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(本文編輯:陳素芳)

Effect of Transcutaneous Acupoint Electrical Stimulation on Postoperative Cognitive Function in Elderly Patients Undergoing Laparoscopic Resection of Rectal Cancer

NIJian-wu,JIANGLiu-ming,ZHOUYi-min,etal.

DepartmentofAnesthesiology,WenzhouHospitalofTraditionChineseMedicine,Wenzhou325000,China

Objective To observe the effect of transcutaneous acupoint electrical stimulation(TAES) on postoperative cognitive function in elderly patients undergoing laparoscopic resection of rectal cancer and its possible mechanism.Methods Sixty elderly patients with rectal cancer who underwent laparoscopic Dixon surgery in Department of Surgical Oncology in the First Hospital Affiliated to Wenzhou Medical University from June 2011 to May 2014,were randomly divided into TAES group(group E,30 cases) and control group(group C,30 cases) by random number table method.Total intravenous anesthesia were selected for patients of two groups,group E were continually treated with TASE from 30 minutes before anesthesia to the end of operation.The mini-mental state examination(MMSE) was used to evaluate the changes of cognitive function during the perioperative period,serum levels of superoxide dismutase(SOD),malondialdehyde(MDA) and S100β were detected at different time points.Results There was no significant interaction between treatment method and time(P>0.05);there were significant differences in MMSE scores among groups(P<0.05);there were significant differences in MMSE scores among different time points(P<0.05);MMSE scores 1,3,5 days after operation in group E were significantly higher than those in group C respectively(P<0.05).The severity degree of POCD 1,3 days after operation of patients in group E were significantly lower than those in group C respectively(P<0.05).There was no significant difference in severity degree of POCD 5,7 days after operation between two groups(P>0.05).There was no significant interaction between treatment method and time(P>0.05);there were significant differences in serum levels of SOD,MDA and S100β among groups(P<0.05);there were significant differences in serum levels of SOD,MDA and S100β among different time points(P<0.05).The levels of SOD in group E were higher than those in group C at the end of operation,and 2,6,24 h after operation respectively(P<0.05).The levels of MDA and S100β in group E were significantly lower than those in group C 2,6,24 h after opteration respectively(P<0.05).Conclusion Laparoscopic resection of rectal cancer in elderly patients can cause POCD,TAES has a protective effect on cerebral function by increasing SOD level,inhibiting the aggregation of MDA and reducing the release amount of S100β,thus can significantly reduce the incidence of POCD among patients.

Colorectal neoplasms;Cognition disorders;Laparoscopy;Electric stimulation therapy

國家自然科學(xué)基金資助項(xiàng)目(81273926);國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃973計(jì)劃(2013CB531900)

325000浙江省溫州市中醫(yī)院麻醉科(倪劍武,周一敏);溫州醫(yī)科大學(xué)附屬第一醫(yī)院麻醉科(蔣柳明,莫云長,吳群,王均爐)

王均爐,325000浙江省溫州市,溫州醫(yī)科大學(xué)附屬第一醫(yī)院麻醉科;E-mail:wangjunlu@163.com

R 735.37

A

10.3969/j.issn.1007-9572.2015.12.009

2014-10-21;

2015-03-10)

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