中国实用医刊
中國實用醫刊
중국실용의간
CENTRAL PLAINS MEDICAL JOURNAL
2014年
19期
18-20
,共3页
右美托咪啶%冠状动脉旁路移植术%血流动力学%心脏保护作用
右美託咪啶%冠狀動脈徬路移植術%血流動力學%心髒保護作用
우미탁미정%관상동맥방로이식술%혈류동역학%심장보호작용
Dexmedetomidine%Coronary artery bypass grafting%Hemodynamics%Cardioprotec-tive effect
目的:本研究拟观察麻醉诱导前开始静脉注射右美托咪定对冠状动脉旁路移植术患者血流动力学和心肌损伤的影响。方法择期拟在体外循环下行冠状动脉旁路移植术患者50例,年龄53~71岁,体质量指数19~27 kg/m2,ASA分级Ⅱ或Ⅲ级。采用随机数字表法,将患者随机分为生理盐水组( C组)和右美托咪定组( D 组),每组25例。D 组静脉输注右美托咪定负荷剂量1μg/kg(注射时间10 min),继以0.5μg/(kg·h)维持输注至术毕,C组以同样方式输注等容量的生理盐水。于手术开始前10 min(T1)、手术切皮(T2)、胸骨劈开即刻(T3)、升主动脉开放10 min(T4)和术毕(T5)时记录心率和血压。分别于手术开始前10 min(T1)、阻断升主动脉30 min(T6)、主动脉开放1 h(T7)、主动脉开放6 h(T8),主动脉开放24 h ( T9)抽取颈内静脉血,测定患者血清心肌肌钙蛋白I( cTnI)含量。结果与T1时比较,D组各时点 HR和平均动脉压(MAP)差异无统计学意义(P﹤0.05),C组T2~T5时HR和 MAP升高(P﹤0.05)。与 T1比较,两组患者cTnI在T8、T9明显升高( P﹤0.05)。cTnI在T6、T7时右美托咪定组均低于对照组,但差异无统计学意义( P﹥0.05),而在T8、T9时明显低于对照组( P﹤0.05)。结论静脉泵注右美托咪定能够维持CABG患者术中血流动力学的平稳,且产生一定程度的心脏保护作用。
目的:本研究擬觀察痳醉誘導前開始靜脈註射右美託咪定對冠狀動脈徬路移植術患者血流動力學和心肌損傷的影響。方法擇期擬在體外循環下行冠狀動脈徬路移植術患者50例,年齡53~71歲,體質量指數19~27 kg/m2,ASA分級Ⅱ或Ⅲ級。採用隨機數字錶法,將患者隨機分為生理鹽水組( C組)和右美託咪定組( D 組),每組25例。D 組靜脈輸註右美託咪定負荷劑量1μg/kg(註射時間10 min),繼以0.5μg/(kg·h)維持輸註至術畢,C組以同樣方式輸註等容量的生理鹽水。于手術開始前10 min(T1)、手術切皮(T2)、胸骨劈開即刻(T3)、升主動脈開放10 min(T4)和術畢(T5)時記錄心率和血壓。分彆于手術開始前10 min(T1)、阻斷升主動脈30 min(T6)、主動脈開放1 h(T7)、主動脈開放6 h(T8),主動脈開放24 h ( T9)抽取頸內靜脈血,測定患者血清心肌肌鈣蛋白I( cTnI)含量。結果與T1時比較,D組各時點 HR和平均動脈壓(MAP)差異無統計學意義(P﹤0.05),C組T2~T5時HR和 MAP升高(P﹤0.05)。與 T1比較,兩組患者cTnI在T8、T9明顯升高( P﹤0.05)。cTnI在T6、T7時右美託咪定組均低于對照組,但差異無統計學意義( P﹥0.05),而在T8、T9時明顯低于對照組( P﹤0.05)。結論靜脈泵註右美託咪定能夠維持CABG患者術中血流動力學的平穩,且產生一定程度的心髒保護作用。
목적:본연구의관찰마취유도전개시정맥주사우미탁미정대관상동맥방로이식술환자혈류동역학화심기손상적영향。방법택기의재체외순배하행관상동맥방로이식술환자50례,년령53~71세,체질량지수19~27 kg/m2,ASA분급Ⅱ혹Ⅲ급。채용수궤수자표법,장환자수궤분위생리염수조( C조)화우미탁미정조( D 조),매조25례。D 조정맥수주우미탁미정부하제량1μg/kg(주사시간10 min),계이0.5μg/(kg·h)유지수주지술필,C조이동양방식수주등용량적생리염수。우수술개시전10 min(T1)、수술절피(T2)、흉골벽개즉각(T3)、승주동맥개방10 min(T4)화술필(T5)시기록심솔화혈압。분별우수술개시전10 min(T1)、조단승주동맥30 min(T6)、주동맥개방1 h(T7)、주동맥개방6 h(T8),주동맥개방24 h ( T9)추취경내정맥혈,측정환자혈청심기기개단백I( cTnI)함량。결과여T1시비교,D조각시점 HR화평균동맥압(MAP)차이무통계학의의(P﹤0.05),C조T2~T5시HR화 MAP승고(P﹤0.05)。여 T1비교,량조환자cTnI재T8、T9명현승고( P﹤0.05)。cTnI재T6、T7시우미탁미정조균저우대조조,단차이무통계학의의( P﹥0.05),이재T8、T9시명현저우대조조( P﹤0.05)。결론정맥빙주우미탁미정능구유지CABG환자술중혈류동역학적평은,차산생일정정도적심장보호작용。
Objective To observe the cardioprotective effect of dexmedetomidine on patients un-derwent coronary artery bypass grafting. Methods There were fifty patients who were scheduled for coro-nary artery bypass grafting. These patients were 53 -71 years old,with a body mass index of 17 -25 kg/m2 . They were randomly divided into two groups:saline group( group C,25 cases)and dexme-detomidine group( group D,25 cases). The patients in the group D received an intravenous infusion of 1 μg/kg for 10 minutes. Then the infusion speed was adjusted to 0. 5 μg/(kg·h)until the end of sur-gery. An equivalent volume of normal saline was administered via the intravenous infusion in the group C. BP and HR were recorded at 10 min before operation(T1),skin incision(T2),chest opening(T3), 10 min after aortic unclamping( T4 )and the end of operation( T5 ). Blood samples were taken from the ra-dial artery for determination of plasma cardiac troponin T(cTnT)concentrations at T1,30 min after aortic clamping( T6 ),1 h after aortic unclamping( T7 ),6 h after aortic unclamping( T8 )and 24 h after aortic unclamping( T9 ). Results Compared with the baseline value at T1 ,there was no significant change in HR and BP at different time points in group D. HR and BP levels significantly increased at T2-T5 in group C( P﹤0 . 05 ). The plasma cTnI levels were significantly increased at T8 and T9 in the two groups ( P﹤0 . 05 ). The plasma cTnI levels at T8 and T9 were significantly lower in group D than those in group C( P﹤0. 05 ). Conclusions Dexmedetomidine infusion is beneficial for keeping the hemodynamics sta-ble and can protect myocardium in patients underwent coronary artery bypass grafting.