急性Stanford A型主动脉夹层术后严重低氧血症的危险因素分析

目的：探讨急性Stanford A型主动脉夹层患者行孙氏手术后严重低氧血症的危险因素。方法：回顾性分析2020年4月至2021年9月，154例急性Stanford A型主动脉夹层患者行孙氏手术的临床资料。根据2012年急性呼吸窘迫综合征(ARDS)柏林诊断标准定义，术后严重低氧血症为氧合指数(PaO₂/FiO₂)≤100mmHg(1mmHg=0.133kPa)。对术前和术中可能导致术后严重低氧血症的危险因素进行单因素和多因素Logistic回归分析，并应用受试者工作特征(ROC)曲线评估严重低氧血症危险因素的预测准确率。结果：在我们的研究中36.4%(56/154)的急性Stanford A型主动脉夹层患者术后发生严重低氧血症。多因素Logistic回归分析显示术前缓激肽(BK)水平(OR=3.429,95%CI:1.101～13.334,P=0.003)和BMI(OR=1.544,95%CI:1.175～2.029,P=0.002)是急性Stanford A型主动脉夹层患者术后严重低氧血症的危险因素。ROC曲线表明术前BK水平和BMI预测急...     

老年心脏手术后急性肾损伤发生的危险因素

目的 探讨老年心脏手术后发生急性肾损伤的相关危险因素.方法 回顾性分析行体外循环心脏手术老年患者218例术后发生急性肾损伤的相关因素.结果 术后发生急性肾损伤34例(急性肾损伤组),未发生急性肾损伤184例(非急性肾损伤组).单因素分析显示,术前血肌酐水平升高、术前左室射血分数降低、术前低蛋白血症、术前高血尿酸、体外循环时间延长、主动脉阻断时间延长、术后pH值异常、术后低血压可能导致术后发生急性肾损伤.多因素Logistic回归分析结果显示:血肌酐水平、左室射血分数、术前高血尿酸、体外循环时间、主动脉阻断时间、术后低血压是老年心脏术后发生急性肾损伤的独立危险因素.结论 手术前后应准确评估术后急性肾损伤发生的潜在危险性,对术前血肌酐≥140 μmol/L、左室射血分数＜35％、血尿酸＞430 μmol/L、手术中心肺转流时间和主动脉阻断时间长及术后监测发现低血压者应加强术后监测.     

老年冠状动脉旁路移植术后低氧血症的危险因素

目的探讨老年患者冠状动脉旁路移植术(CABG)后低氧血症的相关因素。方法回顾性分析243例老年CABG患者临床资料,根据术后是否发生低氧血症将所有患者分为低氧血症组和非低氧血症组。对性别、年龄、吸烟史等18项可能的影响因素先行单因素筛选,后行多因素Logistic回归分析。结果 243例老年CABG患者术后发生低氧血症57(23.46%);单因素筛选8个可能影响因素,包括吸烟史、糖尿病史、慢性肺病史、有瓣膜病、术前左室射血分数(LVEF)、体外循环时间、术毕血红蛋白(Hb)、术中输液量,多因素Logistic回归分析吸烟史、糖尿病史、慢性肺病史和体外循环时间是术后低氧血症的危险因素,而术毕Hb则是其保护因素。结论吸烟史、糖尿病史、慢性肺病史和体外循环时间是CABG后低氧血症的危险因素,而术毕Hb则是其保护因素。     

老年急性Stanford A型主动脉夹层患者弓部手术后脑部并发症发生情况及危险因素

目的探讨老年急性Stanford A型主动脉夹层患者经弓部手术治疗后脑部并发症的发生情况,并分析术后脑部并发症相关的危险因素。方法回顾性分析行弓部手术治疗的220例老年急性Stanford A型主动脉夹层患者的临床资料,统计术后脑部并发症的发生情况,采用单因素和多因素Logistic回归分析方法分析术后脑部并发症的危险因素。根据是否发生并发症分为并发症组(n=62)和无并发症组(n=158),对比两组患者的临床转归情况。结果 220例患者术后发生脑部并发症62例,发生率为28.18%,其中永久性神经系统功能不全(PND)9例,短暂性神经系统功能不全(TND)53例;单因素分析显示,年龄、脑卒中史、主动脉阻断时间与患者术后发生PND有关(P0.05),合并高血压、术前肾功能不全、吸烟史、急诊手术、术中高血糖、术中低血压、术中血压波动大、术后低氧血症、输注红细胞1 L、术后低心排综合征、急性感染与患者术后发生TND有关(P0.05)。经多因素Logistic分析显示,年龄、脑卒中史为患者术后发生PND的独立危险因素(P0.05),术中血压波动大、术前肾功能不全、术后低心排综合征是该患者弓部手术后发生TND的独立危险因素(P0.05)。与无并发症组患者对比,并发症组患者的住院时间、ICU滞留时间明显延长,住院病死率明显升高(P0.05)。结论年龄、脑卒中史、术中血压波动大、术前肾功能不全、术后低心排综合征是老年急性Stanford A型主动脉夹层患者弓部手术后发生脑部并发症的独立危险因素,发生脑部并发症的患者临床转归情况较差,临床手术治疗过程中可考虑对以上危险因素进行积极干预,以降低术后并发症的发生率。     

急性A型主动脉夹层孙氏术后低氧血症的相关因素分析

目的:探讨急性A型主动脉夹层孙氏术后低氧血症发生的相关危险因素。方法:回顾性分析首都医科大学附属北京安贞医院,2018年1月至2018年12月,连续收治的209例急性A型主动脉夹层行孙氏手术患者的临床资料。男性172例,女性37例;平均年龄(47.4±10.1)岁;发病到手术时间14 d。根据术后是否发生低氧血症,将209例患者分为低氧血症组[PaO_2/吸入氧浓度(FiO_2)200 mmHg, 1 mmHg=0.133 kPa]和非低氧血症组(PaO_2/FiO_2≥200 mmHg)。分析和比较两组患者的围术期相关资料,采用多因素Logistic回归分析急性主动脉夹层患者术后发生低氧血症的危险因素。结果:术后低氧血症的发生率56.9%(119/209),围术期死亡20例(9.6%,其中低氧血症组13例,非低氧血症组7例)。单因素分析结果:两组患者发病到手术时间(h)、发病到手术时间24 h、术前ALT、Cr、BMI差异有统计学意义(P0.05);低氧血症组呼吸机辅助通气时间、重症监护病房(ICU)滞留时间多于非低氧血症组,差异有统计学意义(P0.05)。多因素回归分析结果显示:BMI、发病到手术时间24 h是急性A型主动脉夹层孙氏术后低氧血症的危险因素。结论:低氧血症是急性A型主动脉夹层孙氏术后常见的并发症,肥胖、发病到手术时间24 h是急性A型主动脉夹层孙氏术后低氧血症的危险因素,针对性地给予干预措施,以降低低氧血症发生率,从而改善患者的预后。     

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(off-pump coronary artery bypass,OPCABG)后,低氧血症发生的相关因素并探讨预防及处理措施。方法:143例OPCABG患者,术后发生低氧血症40例,对低氧血症患者的年龄、体质量、术前心功能状态、不良习惯、手术时间、术中输液量、尿量、出血量、术中及术后输血量与非低氧血症患者之间,进行相关危险因素分析。结果:低氧血症患者与非低氧血症患者之间,在体质量、术前是否吸烟、手术时间、术中输液量及术后输血量之间,存在明显差异,所有低氧血症患者,在应用利尿、抗感染、呼吸末正压通气、延长机械通气时间治疗后好转,未出现死亡病例。结论:OPCABG术后,低氧血症易发生在体质量大、术前抽烟、手术时间长及术中输液量多的患者,应用抗感染、利尿、加用呼吸末正压等治疗后可纠正低氧血症。     

再次心脏瓣膜置换术后急性肾功能衰竭的危险因素分析

目的:探讨再次心脏瓣膜置换术后急性肾功能衰竭发生的危险因素。方法:回顾272例再次心脏瓣膜置换术患者的临床基本情况、术前肾功能、手术方式、体外循环参数等相关临床资料,通过多因素Logistic回顾分析术后发生急性肾功能损伤的危险因素。结果:272例患者中术后发生急性肾功能衰竭12例。多因素logistic回归分析显示术前合并其他系统疾病(OR=9.104,P=0.029)、急诊手术(OR=90.998,P=0.000)、女性患者(OR=46.449,P=0.016)、术前左心室内径60mm(OR=0.114,P=0.041)是导致患者术后急性肾功能衰竭发生的危险因素。结论:急性肾功能衰竭是再次心脏瓣膜术后最危险的并发症之一,术前积极治疗患者其他系统疾病、选择合理的手术时机,术中尽量缩短体外循环转流时间,术后加强对患者肾功能变化的监测有助于降低肾功能衰竭的发生率。     

围术期血清胆红素水平对心脏体外循环术后急性肾损伤的影响

目的:研究术后血清总胆红素水平(TBIL)与心脏体外循环术后急性肾损伤发生的关系,评估其对体外循环术后急性肾损伤发生的预测价值。方法:回顾性分析2018年1月至2019年8月,在我院行体外循环手术的230例患者临床资料,收集患者术后48 h TBIL水平,根据水平,将患者分为TBIL34.2μmol/L和正常胆红素组。比较两组患者的年龄、性别、合并症、肝功能指标(GOT,GPT)、手术时间、术中输液量、血清肌酐水平、术后发生急性肾损伤情况及连续性肾脏替代治疗使用率等。结果:研究对象中共有68例患者(29.6%)纳入高胆红素组,其中30例患者(44.1%)发生急性肾损伤(OR=3.673,95%CI:1.984～6.230,P0.001)。校正后行多因素Logistic回归分析显示,术后高胆红素血症、年龄、心功能分级、术前合并症(高血压、糖尿病)、BMI30 kg/m~2、体外循环时间、术后低血压与急性肾损伤相关(P0.05)。结论:高胆红素血症是心脏体外循环术后急性肾损伤发生的危险因素。     

急性A型主动脉夹层孙氏术后低氧血症的危险因素分析

目的探讨A型急性主动脉夹层孙氏术后低氧血症发生的相关危险因素及治疗策略。方法回顾性分析2011年1月至2015年12月深圳市孙逸仙心血管医院170例急性A型主动脉夹层行孙氏手术患者的临床资料。170例患者均经计算机断层扫描(computed tomography,CT)血管成像(computed tomography angiography,CTA)确诊为急性Stanford A型主动脉夹层。根据术后是否发生低氧血症,将170例急性主动脉夹层患者分为低氧血症组[动脉血氧分压(arterial partial pressure of oxygen,PaO_2)/吸入氧浓度(fraction of inspired oxygen,FiO_2)200 mm Hg,1 mm Hg=0.133 kPa]72例,男67例,女5例,年龄(46.1±11.4)岁;非低氧血症组(PaO_2/FiO_2≥200 mm Hg)98例,男78例,女20例,年龄(45.1±9.4)岁。分析和比较两组患者的围术期相关资料,采用多因素Logistic回归分析急性主动脉夹层患者术后发生低氧血症的危险因素。结果急性主动脉夹层孙氏术后低氧血症发生率为42.4%(72/170),围术期死亡14例(8.2%,其中低氧血症组10例,非低氧血症组4例)。单因素分析结果:术前低氧血症组患者体质量指数25 kg/m2、术前PaO_2/FiO_2≤300 mm Hg的患者比例大于非低氧血症组,差异有统计学意义(P0.05);低氧血症组深低温停循环时间、术后24 h输血量、呼吸机辅助通气时间、重症监护病房(ICU)滞留时间和住院时间多于非低氧血症组,差异有统计学意义(P0.05)。Logistic多因素回归分析结果:体质量指数25 kg/m2(OR=14.638,P0.001)、深低温停循环(OR=10.060,P0.001)、术前PaO_2/FiO_2≤300 mm Hg(OR=27.073,P0.001)和术后24 h内输血量10 U(OR=8.578,P0.001)为急性主动脉夹层患者手术后发生低氧血症的独立危险因素。结论低氧血症是急性主动脉夹层孙氏术后常见的并发症,肥胖、大量输血、深低温停循环时间长及术前合并低氧血症是孙氏术后低氧血症的独立危险因素。     

体外循环心脏术后高淀粉酶血症的危险因素分析（英文）

目的:分析体外循环心脏术后患者发生高淀粉酶血症的相关危险因素,为临床预防和治疗提供依据。方法:选择从2013年1月1日至2013年6月30日我院在全麻低温体外循环下行心脏手术后成人患者521例。于入ICU即刻、术后24h、48h、72h抽取外周静脉血2ml,分离血清后用Somogyi法测定血清淀粉酶水平。根据血清淀粉酶测定结果将患者分为高淀粉酶血症组(血淀粉酶≥500U/dl,76例)、非高淀粉酶血症组(血淀粉酶500U/dl,445例)。采用单因素和逐步Logistic回归方法分析体外循环心脏术后患者发生高淀粉酶血症的危险因素。结果:逐步Logistic回归分析显示术中体外循环时间、术中低血压、术后肾功能不全、术后感染是术后发生高淀粉酶血症的独立危险因素(OR=1.02~4.12,P0.05或0.01)。结论:在体外循环心脏手术围术期治疗中,缩短体外循环时间,避免术中低血压,维护肾功能及预防感染,可能会减少术后高淀粉酶血症的发生率,从而改善患者的预后。     

心脏直视术后中老年患者纵隔感染的危险因素分析

目的 探讨经心脏直视术后纵隔感染的危险因素及临床意义.方法 我院于2010-2012年间共施行1369例心脏直视手术,选取102例经胸骨正中切口患者,其中61例为术后出现纵隔感染患者,将102例患者的年龄、性别、吸烟史、肥胖、糖尿病、高血压、术后肺部感染、心脏病家族史、体外循环时间进行logistic分析,筛选出纵隔感染的危险因素.结果 吸烟史、糖尿病、术后肺部感染、体外循环时间为心脏直视术后纵隔感染的危险因素.结论 充分评估纵隔感染的危险因素,以便术前及术后采取针对化治疗措施,为避免术后纵隔感染提供临床参考依据.     

Incidence and risk factors for delirium and other adverse outcomes in older adults after coronary artery bypass graft surgery.

OBJECTIVE: To determine the incidence and risk factors for delirium after coronary artery bypass graft (CABG) surgery. DESIGN: Prospective cohort. SETTING: Cardiac surgery units of a tertiary care hospital. PARTICIPANTS: Consecutive patients over age 65 years undergoing elective CABG surgery. Exclusion criteria included preoperative sensory or language barriers. INTERVENTIONS: Each patient was assessed within 24 h before surgery for baseline demographic, medical and functional data. Incident delirium (within four postoperative days) was diagnosed by a study physician. Nine potential risk factors for delirium were subjected to univariate and multivariate analysis. MAIN RESULTS: Of 75 consenting patients, three died during or soon after surgery and one was still comatose at follow-up. Of the remaining 71 participants, 23 (32%) experienced delirium. Those with delirium were more likely than those without delirium to have a history of a stroke (21% versus 4%, respectively, P=0.032) and to have had a longer duration of cardiopulmonary bypass (CPB) (113 mins versus 95 mins, respectively, P=0.025). A tendency to have experienced low cardiac output (83% versus 58%, respectively, P=0.061) postoperatively was also noted. Multivariate analysis confirmed past stroke and duration of cardiopulmonary bypass as risk factors. CONCLUSIONS: Delirium in the elderly after CABG surgery is common. Its occurrence may be predisposed by a history of a stroke and precipitated by a longer duration of CPB.     

体外循环术后的超声监测

目的探讨体外循环术后超声监测的临床意义。方法采用超声诊断仪对107例体外循环心内直视手术患者术后早期行心脏、胸腔及肝脏扫查．根据病情变化每天或间隔1～2d检查1～2次。结果经超声检查发现心包填塞7例(6．5％)，心肌收缩力减弱引起的低心排血量综合征8例(7．5％)，二尖瓣置换术后感染性心内膜炎并瓣周漏1例(0．9％)，胸腔积液51例(48.7％)，术后肝脏反而增大者5例(4．7％)。经采取适当治疗措施后大部分患者好转．3例死于心肌收缩力减弱引起的低心排血量综合征。结论超声监测为部分体外循环术后心肺并发症的早期诊断和正确处理提供了依据，特别是对心包填塞和心肌收缩力减弱引起的低心排血量综合征的鉴别诊断具有确诊价值，对观察术后心功能变化及指导临床用药具有重要意义。     

Renal function after cardiopulmonary bypass surgery in cyanotic congenital heart disease

We studied perioperative renal damage in 22 patients with long-standing cyanotic congenital heart disease. Backround: Postoperative acute renal failure is a major complication of cardiac surgery associated with poor prognosis. Our study was designed to identify risk factors for renal failure in patients with cyanotic congenital heart disease. Patients: 22 cyanotic patients with a oxygen saturation of 82% (38-92%), age 14 years (5-42 years) and six controls with atrial septal defect, age 37 years (28-66 years) were investigated with repeated urinary analyses. Results: Before operation, six of 22 of the cyanotic patients had albuminuria. Postoperatively three patients developed acute renal failure including glomerular and tubular damage. Urinary albumin analysis >1000 mg g(-1) creatinine after 24 h and N-acteyl-beta-D-glucosaminidase analysis >100 U g(-1) creatinine after 48 h predicted dialysis requirement. In noncyanotic controls only one preoperative and none of the postoperative analyses were pathological. Conclusions: Patients with cyanotic congenital heart disease are at risk for acute renal failure, which can be prognosed by urine analysis already 24 h after surgery. Cyanotic glomerulopathy should be known before surgery. To lower the risk, cardiopulmonary bypass time should be kept as short as possible and adequate hydration should be maintained in combination with extended diuretic therapy.     

The effect of hemodynamic factors on cardiac performance following open heart surgery

Sixteen patients who had undergone open heart surgery were studied in order to determine the factors influencing cardiac performance in the postoperative period. Hemodynamic influences during and following cardiopulmonary bypass were found to be more important than the preoperative cardiac function. The flow rate used during cardiopulmonary bypass had a pronounced influence on the post-operative cardiac performance. A low flow can result in the development of vasoconstriction postoperative with an increased chance of low cardiac output. A high flow during bypass is recommended, and in the postoperative period vasoconstriction must be treated vigorously to forecome low cardiac output.     

Effect of cardiopulmonary bypass on myocardial function, damage and inflammation after cardiac surgery in newborns and children.

Postoperative measurement of cardiac troponin I, creatine kinase and procalcitonin reflects myocardial damage and systemic inflammatory response after cardiac surgery with cardiopulmonary bypass in children. Pulse-contour cardiac output technique is a less invasive tool for determining postoperative cardiac function. OBJECTIVE: The aim of our study was to investigate myocardial lesions and systemic inflammatory response after cardiac surgery with cardiopulmonary bypass in children suffering from congenital heart defects. METHODS: The elevation of cardiac troponin I (cTnI), creatine kinase (CK) and procalcitonin (PCT) was evaluated in relationship to duration of aortic cross-clamping, incisional trauma and cardiac bypass temperature in 37 paediatric patients. To assess postoperative cardiac function, the cardiac index was measured in 7 children using the PiCCO (pulse contour cardiac output) technique. RESULTS: CTnI and PCT both peaked on the day of surgery and slowly decreased postoperatively in case of an uncomplicated course. The median values of both parameters differed significantly from the day of surgery until the fourth postoperative day in children with an aortic cross-clamping time (CCT) longer than 80 minutes or after ventriculotomy in comparison to patients with shorter clamping times or atriotomy only. CK values showed similar results, but were less significant than cTnI. A relationship between cTnI, CK or PCT and the body temperature during cardiopulmonary bypass was not found. The cardiac indices (CI) measured by the PiCCO technique in the first 48 hours after surgery showed normal values. CONCLUSION: In summary, perioperative measurement of cTnI, CK and PCT reflects myocardial damage and systemic inflammatory response and allows an improved peri- and postoperative management. PiCCO technique is an excellent, less invasive tool to determine postoperative cardiac function.     

体外循环心脏术后消化系统并发症的防治进展

体外循环心脏术后消化系统并发症虽然发生率不高,但病死率却极高.体外循环期间多种因素导致消化系统血液供应减少、组织损伤、炎性介质大量释放,从而引起包括胃肠道出血、消化性溃疡、缺血性肠炎、胰腺炎、胆囊炎、肝衰竭等在内的消化系统并发症.严密观察患者临床表现并早期诊断予以干预,对患者的预后有重要帮助.本文就近年来体外循环心脏术后消化系统并发症的机制、危险因素及诊断治疗的进展予以综述.     

Intraoperative cardiac troponin T release and lactate metabolism during coronary artery surgery: comparison of beating heart with conventional coronary artery surgery with cardiopulmonary bypass

OBJECTIVE: To compare cardiac troponin T release and lactate metabolism in coronary sinus and arterial blood during uncomplicated coronary grafting on the beating heart with conventional coronary grafting using cardiopulmonary bypass. DESIGN: A prospective observational study with simultaneous sampling of coronary sinus and arterial blood: before and 1, 4, 10, and 20 minutes after reperfusion for analysis of cardiac troponin T and lactate. Cardiac troponin T was also analysed in venous samples taken 3, 6, 24, 48, and 72 hours after surgery. SETTING: Cardiac surgical unit in a tertiary referral centre. PATIENTS: 18 patients undergoing coronary grafting on the beating heart (10 single vessel and eight two-vessel grafting) and eight undergoing two-vessel grafting with cardiopulmonary bypass. RESULTS: Cardiac troponin T was detected in coronary sinus blood in all patients by 20 minutes after beating heart coronary artery surgery before arterial concentrations were consistently increased. Peak arterial and coronary sinus cardiac troponin T values on the beating heart during single (0.03 (0 to 0. 05) and 0.09 (0.07 to 0.16 microg/l, respectively) and two-vessel grafting (0.1 (0.07 to 0.11) and 0.19 (0.14 to 0.25) microg/l) were lower than the values obtained during cardiopulmonary bypass (0.64 (0.52 to 0.72) and 1.4 (0.9 to 2.0) microg/l) (p < 0.05). The area under the curve of venous cardiac troponin T over 72 hours for two-vessel grafting on the beating heart was less than with cardiopulmonary bypass (13 (10 to 16) v 68 (26 to 102) microg.h/l) (p < 0.001). Lactate extraction began within one minute of snare release during beating heart coronary surgery while lactate was still being produced 20 minutes after cross clamp release following cardiopulmonary bypass. CONCLUSIONS: Lower intraoperative and serial venous cardiac troponin T concentrations suggest a lesser degree of myocyte injury during beating heart coronary artery surgery than during cardiopulmonary bypass. Oxidative metabolism also recovers more rapidly with beating heart coronary artery surgery than with conventional coronary grafting. Coronary sinus cardiac troponin T concentrations increased earlier and were greater than arterial concentrations during beating heart surgery, suggesting that this may be a more sensitive method of intraoperative assessment of myocardial injury.     

冠状动脉旁路移植术后低氧血症危险因素研究

目的 分析冠状动脉旁路移植术后低氧血症发生的危险因素,探讨其预防和治疗方法.方法 回顾性分析我院198例冠状动脉旁路移植术（CABG）患者,男性140例,女性58例,年龄40～84（66.36±9.29）岁.机械通气（FiO2＞45％）或面罩给氧（氧流量＞6 L/min）,术后PaO2低于[102-（0.33×年龄）]mm Hg者,确诊为低氧血症,对其术前、术中、术后相关因素进行单因素及多因素回归分析.结果 术后低氧64例,低氧发生率32.3％,成功纠正低氧60例,余4例出现多器官功能衰竭死亡,纠治率93.8％.术前、术中、术后单因素分析有统计学意义的因素包括吸烟史、糖尿病病史、术后胸腔积液、术后肺部感染、呼吸机辅助通气时间、血管病变根数、术后24h引流量、RBC输注量、术中液体入量、手术时间、主动脉阻断时间、体外循环时间和术前PaO2.多因素回归分析CABG术后低氧血症的独立危险因素有：术后肺部感染（OR=10.906,95％CI3.082～38.592）、血管病变支数（OR=3.432,95％CI 1.552～7.590）、吸烟史（OR =2.385,95％CI 1.181～4.815）、糖尿病史（OR=2.542,95％CI1.253～5.157）,预测强度依次递减（P＜0.05）.结论 充分认识CABG术后低氧血症的危险因素,合理的围术期处理可有效防治CABG术后低氧.     

法洛四联症根治术后低心排血量综合征的危险因素与防治

目的 分析法洛四联症（TOF）根治术后发生低心排血量综合征（LCOS）的危险因素,探讨其防治策略.方法 以2001年1月至2010年12月间连续191例施行TOF根治手术患儿为研究对象,进行术后LCOS危险因素的单因素分析和多因素Logistic回归分析.结果 术后发生LCOS 20例,发生率为10.47%,术后LCOS患者病死率为10.00%.单因素分析显示,患儿年龄、体质量、红细胞压积、术前脉搏血氧饱和度、跨环补片率、Nakata指数、体外循环时间、主动脉阻断时间、围术期意外事件、血管活性药物评分、呼吸机辅助时间、停留ICU时间与术后LCOS有关.经多因素Logstic回归分析显示,年龄≤6个月、Nakata指数＜140 mm2/m2、围术期意外、体外循环时间＞150 min为小儿TOF根治术后LCOS的危险因素.结论 TOF根治术后发生LCOS与患儿年龄、Nakata指数、围术期意外、体外循环时间有关.对具有LCOS高危因素的TOF手术患儿采取积极的防治措施,对防止TOF根治术后发生LCOS具有重要意义.