体外循环和非体外循环冠状动脉旁路移植术后心肌梗死发生率的Meta分析

目的 使用Meta分析比较常规体外循环冠状动脉旁路移植术(CCABG)和非体外循环冠状动脉旁路移植术(OPCAB)术后心肌梗死发生率的差异.方法 在 Medline、SCI、Cochrane图书馆临床对照试验注册库(CENTRAL)和中国生物医学文献光盘数据库(CBMdisc)检索中文和英文的相天随机对照临床试验,并检索相关文献的参考文献,检索时间截止至2009年1月.根据严格的纳入和排除标准,两名评价员独立地筛选文献,并按照Cochrane系统评价员手册5.0.0版所建议的评价方法 对纳入临床试验进行质量评价,最后将提取的资料用RevMan 5软件进行数据处理和分析.结果 共纳入22个试验进行Meta分析,OPCAB组共纳入1494例病人,心肌梗死总发生率为2.81%;CCABG组共1512例,心肌梗死总发生率为3.57%.Meta分析结果 显示OPCAB和CCABG术后心肌梗死发生率的差异尤统计学意义(OR=0.80,95%CI=0.54～1.20,P=0.28).结论 依据现有的随机对照试验进行Meta分析结果 显示,OPCAB和CCABG术后心肌梗死发生率的差异无统计学意义.     

体外循环和非体外循环冠状动脉旁路移植术后心肌梗死发生率的Meta分析

目的 使用Meta分析比较常规体外循环冠状动脉旁路移植术(CCABG)和非体外循环冠状动脉旁路移植术(OPCAB)术后心肌梗死发生率的差异.方法 在 Medline、SCI、Cochrane图书馆临床对照试验注册库(CENTRAL)和中国生物医学文献光盘数据库(CBMdisc)检索中文和英文的相天随机对照临床试验,并检索相关文献的参考文献,检索时间截止至2009年1月.根据严格的纳入和排除标准,两名评价员独立地筛选文献,并按照Cochrane系统评价员手册5.0.0版所建议的评价方法 对纳入临床试验进行质量评价,最后将提取的资料用RevMan 5软件进行数据处理和分析.结果 共纳入22个试验进行Meta分析,OPCAB组共纳入1494例病人,心肌梗死总发生率为2.81%;CCABG组共1512例,心肌梗死总发生率为3.57%.Meta分析结果 显示OPCAB和CCABG术后心肌梗死发生率的差异尤统计学意义(OR=0.80,95%CI=0.54～1.20,P=0.28).结论 依据现有的随机对照试验进行Meta分析结果 显示,OPCAB和CCABG术后心肌梗死发生率的差异无统计学意义.     

非体外循环和体外循环冠状动脉旁路移植术在二次冠状动脉旁路移植术中的应用

目的研究对比在二次冠状动脉旁路移植术(re-CABG)患者中分别采用非体外循环和体外循环下冠状动脉旁路移植术(off-pump CABG和on-pump CABG)的临床早期结果,探讨通过合理手术方式的选择,提高re-CABG的手术疗效。方法自2000年4月到2006年6月,21例首次CABG后因心绞痛复发患者在阜外心血管病医院接受了re-CABG手术,其中10例行off-pump CABG(off-pump组),11例行on-pump CABG(on-pump组)。两组患者术前性别、年龄、体重、心肺功能、心绞痛程度、左心室舒张期末内径、射血分数、合并高血压、糖尿病等方面差异无统计学意义(P>0.05)。结果 On-pump组中患者术后死亡1例,冠状动脉远端吻合口数多于off-pump组(P<0.05);off-pump组无手术死亡,在手术时间、术后呼吸机辅助时间、胸腔引流液量、输血量和手术后住院时间等方面,均明显少于on-pump组(P<0.05)。结论 Off-pump CABG和on-pump CABG技术在re-CABG中都可以取得满意疗效,off-pump CABG下施行re-CABG安全可靠。     

非体外循环冠状动脉旁路移植术

目的:总结非体外循环冠状动脉旁路移植术(OPCAB)的临床经验。方法:自2001年3月～2002年10月我院共完成OPCAB9例,在进行旁路移植吻合时,冠状动脉的暴露和制动借助于特制胸骨牵开器和配套的冠状动脉固定器。结果:无手术死亡,无围手术期心肌梗死等严重并发症发生,短期随访临床效果满意。结果:OPCAB安全可行,可减少输血,减轻手术创伤与并发症,近期疗效满意。     

非体外循环紧急转为体外循环冠状动脉旁路移植术的分析

目的了解导致非体外循环冠状动脉旁路移植术(off-pump coronary artery bypass grafting,off-pumpCABG)紧急转为体外循环冠状动脉旁路移植术(on-pump coronary artery bypass grafting,on-pump CABG)的临床的原因,为手术方法的选择提供借鉴。方法回顾分析2002年1月～2006年5月期间546例冠心病患者行off-pumpCABG的临床资料,对术中需紧急转为体外循环下完成手术的患者(off-pump转on-pump组,24例)与同期顺利完成off-pump CABG患者(off-pump组,522例)进行对比分析,并行logistic多因素分析。结果在行off-pump CABG中,24例患者因心室颤动或血流动力学不稳定需紧急改变术式。Off-pump转on-pump组患者中死亡4例,死亡率为16.7%(4/24),明显高于off-pump组[16.7%vs.2.7%(14/522),P<0.001]。多因素logistic回归分析结果提示急性心肌梗死(OR=3.142,P=0.004)、急诊CABG(OR=1.571,P=0.011)和右冠状动脉狭窄≤90%(OR=1.922,P=0.024)为off-pump转为on-pump的危险因素。结论Off-pump紧急转为on-pump时死亡率明显增高,对同时合并有右冠状动脉狭窄≤90%、急性心肌梗死和急诊CABG等高危因素行off-pump CABG时,要做好体外循环的准备。     

非体外循环下冠状动脉旁路移植术

目的 总结110例非体外循环心脏跳动下冠状动脉旁路移植术经验，探讨其手术适应证、优缺点及手术方法。方法 常温、全身麻醉，胸正中切口，非体外循环心脏跳动下，应用特殊心表固定器行冠状动脉旁路移植术，平均搭桥3．9支，血管桥为乳内动脉、大隐静脉及桡动脉。结果 全组无手术死亡，术后心绞痛症状消失。手术时间平均为210min，术后气管插管时间平均为4．8h。术后住院时间平均为10d，住院费用平均为4．4万元。其中3例术中出现不可逆血压过低、室颤而转为体外循环冠状动脉旁路移植术。结论 非体外循环心脏跳动下冠状动脉旁路移植术是一种安全、有效的治疗方法。特别适合于老年及心功能差的患者，可减少体外循环并发症，缩短术后住院时间，降低住院费用，但不能完全替代体外循环旁路移植术。     

非体外循环下冠状动脉旁路移植术

目的　探讨和评价微创非体外循环冠状动脉旁路移植术 (OPCAB)的临床效果。　方法　 38例 OPCAB患者中左冠状动脉主干病变 4例 ,1支血管病变 10例 ,2支 14例 ,3支 10例 ,均经胸骨正中切口行 OPCAB,每例移植血管 1～ 5支 ,平均移植血管 2 .42支。应用左乳内动脉 38支 ,大隐静脉 5 4支。　结果　全组无手术死亡 ,36例顺利完成手术 ,2例转为心肺转流术下冠状动脉旁路移植术。38例均在手术后 2～ 12小时 ,平均 4.9± 2 .6小时顺利拔除气管内插管。全组均顺利康复 ,15例手术后 1个月内恢复了原工作。　结论　对有适应证的患者 ,OPCAB是一项安全有效的术式     

非体外循环下冠状动脉旁路移植术

目的 报告微创非体外循环冠状动脉旁路移植术(OPCABG),探讨其手术指征及外科处理要点。方法 回顾性总结5例OPCABG的临床资料。结果 5例顺利完成非体外循环冠状动脉旁路移植术。随访3～4个月,无死亡,无明显心绞痛及心肌缺血表现。结论 对于选择的患者,OPCABG安全、经济、有效,是一种值得推广的微创心脏手术方法。     

非体外循环冠状动脉旁路移植术术后处理

目的　总结47例非体外循环冠状动脉旁路移植术(OPCAB)术后处理的临床经验，并对其进行初步探讨。方法　1999年6月～2000年6月我院共完成OPCAB47例，其中单支血管病变3例，双支病变5例，三支病变39例。采用乳内动脉、桡动脉和／或大隐静脉共移植血管150支，平均每例3.2支。　结果　平均术后辅助呼吸时间6±2.5小时、平均ICU监护治疗时间36小时，31例患者未输血，术后早期发生心律失常15例，出血、二次手术3例，二次气管内插管2例，术后1个月切口感染2例，胸骨骨不连1例，无住院死亡病例。术后平均住院14天。　结论　OPCAB术后早期应适时尽早拔出气管内插管，调整血容量，水、电解质平衡及术前所用药物，预防和及时处理心律失常等并发症。     

机器人微创非体外循环冠状动脉旁路移植术

目的 评价da Vincis机器人系统进行胸廓内动脉(IMA)游离、小切口非体外循环下冠状动脉旁路移植术的安全性和手术效果.方法 2007年1月到2011年3月,105例患者接受机器人IMA游离、小切口非体外循环下冠状动脉旁路移植术.其中男性77例,女性28例,年龄33～77岁,平均(59±10)岁.患者术前行64排CT检查评估IMA质量,2例患者左LIMA纤细或走行异常弃用.术者于操作台前、三维成像系统下遥控机器人游离IMA并完成动脉桥与靶血管的徒手吻合.其中4例患者旁路移植后接受了杂交技术于回旋支或右冠状动脉行支架植入术.术中均以超声血流检测仪测量桥血管的波形及血流.术后以冠状动脉造影或64排CT评估桥血管的通畅性,并进行随访.结果 所有患者成功接受上述手术,无手术死亡病例.术中平均IMA血管桥血流量为(21±13) ml/min.1例于术后第1天突发心跳骤停经抢救后痊愈,复查桥血管通畅.1例合并脑梗死患者术后肺部感染,痊愈后出院.其余患者无并发症发生.术中及术后出血少,术后恢复快.随访1～51个月,平均(30±12)个月.术后冠状动脉造影或64排CT复查未见桥血管狭窄或闭塞,心绞痛症状缓解.结论 机器人IMA游离、小切口非体外循环冠状动脉旁路移植术创伤小、疗效确切、安全性好,是微创冠状动脉再血管化的重要方向之一.     

非体外循环与体外循环冠状动脉旁路移植血管中远期通畅率比较

目的 比较非体外循环不停跳与体外循环冠状动脉旁路移植手术后中远期移植血管的通畅率.方法 对同一术者行冠状动脉旁路移植手术后5年以上病例50例.按手术方式分为两组.第1组采用传统体外循环下进行冠状动脉旁路移植(体外循环组,25例);第2组采用非体外循环不停跳技术进行冠状动脉旁路移植(非体外循环组,25例).对所有病例进行冠状动脉造影随访,比较两组移植血管的通畅情况.结果 两组均男21例,女4例.第1组手术年龄(55.4±8.9)岁;随访70～110个月,平均(86.52±12.48)个月;移植血管共83支,其中动脉移植血管41支,静脉移植血管42支,平均移植血管(3.32±0.63)支/例;随访移植血管通畅61支,狭窄6支,闭塞16支,动脉移植物通畅率为78.05%,静脉通畅率69.05%,总通畅率73.49%.第2组手术年龄(58.2±9.09)岁;移植血管共65支,其中动脉移植血管31支,静脉移植血管34支,平均移植血管(2.52±0.71)支/例,随访64～99个月,平均(82.68±12.48)个月;随访移植血管通畅47支,狭窄4支,闭塞14支,动脉移植物通畅率为74.19%,静脉通畅率70.59%,总通畅率72.31%.结论 非体外循环不停跳冠状动脉旁路移植手术移植血管中远期通畅率与传统体外循环手术一致,均可达到较好的中远期疗效.

Abstract：

Objective Off-pump coronary artery bypass grafting (OPCAB) is used more widely in recent years in China. However, there is an argument on benefits and risks of off-pump surgery. Many studies shown that OPCAB had more benefits in short-term outcomes than conventional coronary artery bypass grafting(CCABG). But evidences from other studies suggested that OPCAB resulted in less long-term graft patency as compared with on-pump surgery. This study examined the longterm graft patency of OPCAB and CCABG performed by one surgeon. Methods 50 patients who had received surgical revascularization by a surgeon for more than 5 years were reviewed, 25 patients received conventional coronary artery bypass grafting ( group 1 ) and 25 patients received OPCAB ( group 2). All patients had angiograms for compareing the graft patency between the two groups. Results Among 25 patients in group 1,21 were male and 4 were female. The mean age of patients at surgery was (55.4 ±8.9) years. 15 cases had unstable angina, 16 patients had old myocardial infarction and 6 cases had diabetes.The ejection fraction (EF) was 0.58 ±0.14. The mean number of bypasses per patient was 3.32 ±0.63. Mean duration of operation was (3.58 ± 0. 82) hours. Mean follow-up duration was ( 86.52 ± 12.48) months. 83 grafts were evaluated for patency ( open vs. closed) and were graded by Fitzgibbon as grade A ( excellent graft), B ( impaired graft, with a stenosis of ≥50%, or a diameter less than 50% of the grafted artery), or O ( completely occluded). The graft patency was 73.49%, 61grafts were graded as Fitzgibbon A, 6 grafts as Fitzgibbon B and 16 grafts as Fitzgibbon 0. 25 patients were in group 2, 21males and 4 females. The mean age of patients at procedure was (58.2 ± 9.09) years, 11 patients had unstable angina, 13 patients had old myocardial infarction and 6 cases had diabetes. The ejection fraction (EF) was 0.59 ± 0. 14. Conclusion No 2011.03.013 difference in long-term graft patency was identified between on-pump and off-pump coronary artery bypass grafting. Off-pump oronary artery bypass grafting preformed by an experienced surgeon may gain similar long-term graft patency to that of conventional bypass.     

A comparison of early clinical outcomes of off-pump and on-pump coronary artery bypass grafting surgery in elderly patients

Background: The reply of question of “which coronary artery bypass grafting (CABG) technique is superior in elderly patients, off-pump or on-pump CABG surgery?” is controversial. We aimed to compare the early clinical outcomes in elderly patients undergoing off-pump and on-pump CABG.

Methods: From January 2009 to January 2015, 344 elderly patients (aged 70 or older) underwent off-pump (n?=?137) or on-pump (n?=?207) CABG. Patients’ medical records were retrospectively reviewed, and their baseline preoperative characteristics, operative data and postoperative outcomes were analyzed, thereby a comparison of early outcomes between off-pump and on-pump patients was performed.

Results: Mean age of patients was 74.4?±?3.8 years. Both groups were statistically similar in terms of baseline preoperative characteristics. Number of distal bypass was significantly lower in off-pump group than in on-pump group. Postoperative length of intensive care unit and hospital stay were similar between two groups. Amounts of transfused blood products were significantly lower in off-pump CABG group. There were no significant differences in terms of postoperative complications and mortality between two groups.

Conclusions: Our results did not reveal a significant benefit of either surgical technique with respect to early-term clinical outcomes in elderly CABG patients. Further investigations are needed to determine whether off-pump CABG is superior than on-pump CABG in elderly patients.     

体外循环和非体外循环冠状动脉旁路移植术围术期血小板数量和功能的变化研究

目的分析体外循环和非体外循环冠状动脉旁路移植术（CCABG和OPCAB）围术期血小板数量和功能的变化情况。方法随机选取接受CCABG和OPCAB的患者各30例,术后常规阿司匹林治疗（100mg,每天1次）,分别记录两组术前、术后当天、术后1d、5d和10d的血小板数量及二磷酸腺苷诱导的血小板聚集率（PAG）。描绘走行趋势图,分析术后血小板数量和PAG的变化规律。结果在术后常规阿司匹林治疗的情况下,CCABG组和OPCAB组患者术后早期血小板数量均短暂下降,然后显著上升并超过术前水平（P〈0．01）,这种变化在CCABG组更明显。两组的PAG术后均增高（P〈0．05）,于术后第10天,OPCAB组基本恢复正常,而CCABG组仍高于术前水平（P〈0．05）。结论无论是否应用体外循环,CABG术后均有血小板数量的增加和功能的提高,体外循环组的变化更明显。     

Coronary artery spasm after off-pump coronary artery bypass grafting

BACKGROUND: Coronary artery spasm (CAS) in the immediate postoperative period has been recognized as a possible cause for perioperative myocardial ischaemia after off-pump coronary artery bypass grafting (CABG). It varies in severity and can be associated with circulatory collapse and death. The purpose of this study was to present our experiences on CAS after off-pump CABG and detail its management. METHODS: The case reports of three patients with similar clinical presentations of ischaemic heart disease who underwent CABG using an off-pump technique are reviewed. Severe manifestations of CAS in the immediate postoperative period with documented angiographic findings are presented. RESULTS: Three patients (two men and one woman) with angina pectoris were diagnosed with coronary artery disease using coronary angiography. The elective off-pump CABG was uneventful; however, severe manifestation of myocardial ischaemia with abrupt onset developed at the intensive care unit. All three patients underwent immediate coronary angiography to verify the diagnosis of CAS. Apart from intracoronary nitroglycerine infusion and medical support with inotropic agents, extracorporeal membranous oxygenation was carried out because of severe haemodynamic deterioration in one case, while support was required with intraaortic balloon pumping in another. All three patients made a full recovery. CONCLUSION: Coronary artery spasm can severely complicate the postoperative course for patients undergoing off-pump CABG, leading to myocardial ischaemia or infarction, life-threatening arrhythmias, persistent hypotension and even cardiac arrest. Early awareness and diagnosis of CAS with the establishment of appropriate management strategies may prevent its potentially lethal consequences.     

Transfusion and bleeding in coronary artery bypass grafting: an on-pump versus off-pump comparison

Blood transfusion rates in coronary artery bypass grafting (CABG) surgery using cardiopulmonary bypass (CPB) are typically higher compared with off-pump CABG (OPCAB). However, few studies have specifically examined intraoperative hemodilution as a contributing factor. The aim of this retrospective review was to compare the effect of using CPB or OPCAB on red blood cell (RBC) transfusion and postoperative bleeding. The lowest intraoperative hematocrit (Hct) was used as marker of intraoperative hemodilution. We reviewed the perioperative data of all isolated CABG patients at a metropolitan hospital from January 2003 to June 2005. Stepwise regression analyses were performed to determine whether CPB was an independent predictor of RBC transfusion, reoperation for bleeding, or postoperative chest drainage. Of a total of 1043 patients, there were 433 CPB and 610 off-pump cases. CPB use was not significantly related to increased RBC transfusions (odds ratio [OR], 0.98; 95% confidence interval [CI], 0.63-1.52; p = .921) and was associated with a lower incidence of reoperations for bleeding (OR, 0.4; 95% CI, 0.2-0.8; p = .009). There was less chest drainage over the first 12 hours in patients undergoing CPB (p < .0001); however, total postoperative chest drainage was not significantly related to operative procedure (p = .122). The lowest documented intraoperative Hct was a significant factor in RBC transfusions (OR, 0.89; p < .0001), an increased reoperation rate for bleeding (OR, 0.9; p = .001) and more postoperative chest drainage (log10-transformed: at 12 hours, b = -0.009, p < .0001; total, b = -0.006, p < .0001). CPB is not an independent risk factor in the incidence of RBC transfusions and is not associated with increased postoperative bleeding for isolated CABG. However, intraoperative hemodilution is an independent risk factor, with a lower intraoperative Hct associated with more RBC transfusions, increased reoperations for bleeding, and increased postoperative chest drainage. Addressing intraoperative hemodilution is important in minimizing CPB-associated morbidities.     

Off-pump versus on-pump coronary artery bypass surgery and postoperative pulmonary dysfunction

OBJECTIVE: To investigate how off-pump coronary artery bypass grafting (CABG) affects postoperative pulmonary function when compared with on-pump CABG. DESIGN: Prospective clinical study. SETTING: University-affiliated teaching hospital. PARTICIPANTS: Adult patients (n = 39) undergoing elective coronary artery bypass surgery with or without cardiopulmonary bypass. INTERVENTIONS: Two groups of patients were compared: 19 consecutive patients undergoing off-pump CABG surgery and 20 consecutive patients undergoing conventional CABG surgery. MEASUREMENTS AND MAIN RESULTS: Pulmonary function tests (flow volume loops and lung volumes with plethysmography) were done preoperatively and 72 hours postoperatively. Arterial blood gases and PaO2/FIO2 were measured at various stages. Sequential chest x-rays were obtained and evaluated for pleural changes, pulmonary edema, and atelectasis. In both groups, PaO2/FIO2 ratios decreased progressively throughout the perioperative period, with no significant differences between the groups at any stage during the study. There was a significant decline in postoperative pulmonary function tests in both groups, but there was no difference between groups at 72 hours postoperatively. No differences were found in the time to extubation, atelectasis scores, or postoperative complications. CONCLUSIONS: Off-pump CABG does not confer major protection from postoperative pulmonary dysfunction compared with CABG surgery with CPB. Strategies for minimizing pulmonary impairment after CABG surgery should be directed to factors other than the use of CPB.     

非体外循环冠脉搭桥术中心脏移位对血液动力学的影响

目的 观察非体外循环冠脉搭桥术(OPCABG)中暴露术野时心脏位置改变对心血管功能的影响。方法 冠心病多支病变患者47例,年龄50～82岁,术前左室射血分数为0.55±0.14,择期行OPCABG,平均移植血管桥3.2条。采用漂浮导管方法监测血液动力学,分别在麻醉诱导后循环稳定时(T_1)、搬动心脏前(T_2)、吻合前降支时(T_3)、吻合右冠状动脉或后降支时(T_4)、吻合左旋支或对角支时(T_5)、血管吻合完成、心脏恢复自然位置后(T_6)、及手术结束时(T_7)作参数测定。结果 吻合前降支时(T_3),SI和LVSWI有所降低(P<0.01),但CI和SvO_2保持在基础水平。吻合后降支或右冠状动脉、左旋支或对角支时(T4、T5),CI、SI、LVWI、LVSWI、RVWI和RVSWI等明显降低(P<0.01),其中CI较对照值降低18％,LVWI和RVWI降低均为25％,MAP和SvO_2也显著下降(P<0.05～0.01),而HR、RAP、MPAP、PAWP和PVRI则显著增高(P<0.05～0.01)。心脏恢复自然位置后(T_6),CI、LVWI和RVWI恢复到对照值水平。结论 OPCABG术中由于心脏被搬动及移位,可导致明显的心功能损害和血压下降;麻醉手术期间采取可靠的血液动力学监测和有效的心血管功能支持十分必要。     

非体外循环冠状动脉旁路移植术后低氧血症相关因素分析

目的分析非体外循环冠状动脉旁路移植术(Offpump coron aryartery bypass grafting,OPCABG)后低氧血症的影响因素。方法回顾性分析135例患者OPCABG术后并发低氧血症44例,对患者的年龄、性别、吸烟史、体质量、高血压、糖尿病、冠脉病变、术前心功能与低氧血症进行相关性分析。结果 CABG患者高龄、肥胖、长期大量吸烟及术前心功能底下与低氧血症有显著相关;性别、糖尿病、高血压、冠脉病变支数与CABG术后低氧血症发生率无明显相关性。结论 OPCAB术后低氧血症与多种因素有关,预防措施包括术前、术中、术后的各个阶段。