机构地区:[1]广州医学院附属广州市第一人民医院麻醉科,510180
出 处:《中华生物医学工程杂志》2008年第2期114-118,共5页Chinese Journal of Biomedical Engineering
基 金:广州市医药卫生科技重点项目(2006-ZDi-01)
摘 要:目的研究舒芬太尼自控-靶控(PCA—TCI)镇痛对腰麻患者呼吸功能和镇静程度的影响,以评价舒芬太尼PCA—TCI的安全性。方法选择择期下肢手术患者60例[美国麻醉学家学会(ASA)分级Ⅰ-Ⅱ级],年龄20—59岁,体重50—80kg,随机分成3组:Ⅰ组为舒芬太尼设定靶控血浆浓度0.1μg/L,Ⅱ组为0.15μg/L,Ⅲ组为0.2μg/L,每组20例。腰麻平面固定第10胸椎(T10)水平后,连接PCA-TCI系统输注药物。观察PCA-TCI启动前(T0)、启动后5(T1)、10(T2)、15(T3)、20(T4)、25(T5)、30(T6)、35(T7)、40(T8)、45min(T9)各时点PCA-TCI程序预算的舒芬太尼血浆浓度(C'P)、脉搏氧饱和度(SpO2)、呼吸频率(RR)、潮气量(VT)、呼气末二氧化碳分压(PETCO2)、第1秒呼气率(FEV1%)、吸入-呼出氧浓度差(O21-E)、顺应性环(PV环)、心率(HR)、平均动脉压(MAP)等呼吸力学和循环参数及脑电双频指数(BIS)和警觉-镇静评分(OAA/S)。结果舒芬太尼PCA—TCI启动后,与T0比较,3组患者呼吸功能的各项指标均有不同程度的变化,其中VT增减的幅度为-10.0%-11.3%,但与T0时比较差异无统计学意义(P〉0.05)。Ⅰ组患者在T4和T7时RR均降低18.2%(P〈0.05),而Ⅱ组则分别降低17.4%和16.0%(P〈0.05),Ⅲ组患者在T7和T8时RR降低21.7%和23.1%(P〈0.05)。Ⅰ组和Ⅱ组FEV1%有所降低,但与T0比较,差异无统计学意义(P〉0.05),而Ⅲ组则在T7和T8时分别下降15.8%和18.5%(P〈0.05)。Ⅰ组、Ⅱ组患者PETCO2较T0时略有升高(P〉0.05),而Ⅲ组在T7和T8时分别升高17.9%和18.6%(P〈0.05)。Ⅲ组患者T3-T9时,BIS降低7.2%-9.8%,OAA/S评分均大于3,与T0时比较,差异有统计学意义(P〈0.05),而Ⅰ组、Ⅱ组BIS与OAA/S评分无明显变化(P〉0.05)。�Objective To investigate the effects of sufentanil patient controlled analgesia-target controlled infusion (PCA-TCI) on respiratory function and sedation of patients during subarachnoid anesthesia. Methods Sixty patients,20-59 years old,50-80 kg weight, with ASA Ⅰ - Ⅱ, undergoing selective operation of lower limbs, were randomly divideded into three groups ( goup Ⅰ , Ⅱ, Ⅲ, n = 20). The target plasma concentration(Cp) of sufentanil in group Ⅰ as setted at 0.1 μg/L, in group Ⅱ 0.15 μg/L and in group Ⅲ 0.21.~g/L . After the segment of subarachnoid anesthesia was fixed, sufentanil was injected with PCA-TCI system C'p(calculated by the PCA-TCI programme), SpO2, RR, VT, PETCO2, FEV1% , O21-E, PV loop, HR, MAP, BIS and OAA/S score were recorded before sufentanil PCA-TCI started( To ) and after 5 (T1 ), 10 (T2 ), 15 (T3 ), 20 (T4 ), 25 ( T5 ), 30 ( T6 ),35 ( T7 ),40 ( T8 ),45 min ( T9 ) respectively. Results The index of respiratory function changed in different degrees after sufentanil PCA-TCI started. Compared with VT at T0, the VT fluctuated within the range -10.0% -11.3% (P 〉 0.05). RR decreased by 18.2% at T4 and T7 in group I compared to those at T0(P〈0.05). And in group Ⅱ ,RR decreased by 17.4% and 16.0%respectively at T4 and T7 ( P 〈 0.05 ). In group Ⅲ, RR decreased by 21.7% and 23. 1% at T7 and Ts respectively( P 〈 0.05 ). FEV1 % decreased a little in group Ⅰ and Ⅱ , but the difference was not significant as compared to those at T0. And in group m, FEV1 % decreased by 15.8% and 18.5% respectively( P 〈 0. 05 ). PETCO2 increased a little in group Ⅰ and Ⅱ ( P 〉 0.05 ), but increased by 17.9% and 18.6% at T7 and Ts respectively in group m(P 〈0.05). The BIS decreased from 7.2% to 9.8% at T3 to T9 in group Ⅲ,with OAA/S score exceeded 3. Therre were significant differences as compared with To ( P 〈 0.05 ) , while BIS value and OAA/S score changed little in group Ⅰ and Ⅱ ( P 〉
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