冠状动脉严重病变的高龄患者的非体外循环冠状动脉旁路移植术

目的　总结冠状动脉严重病变的高龄患者行非体外循环冠状动脉旁路移植术 (OPCAB)的治疗经验。方法　回顾性分析 5 3例 ,年龄在 75～ 82 (77± 2 )岁 ,冠状动脉严重病变的患者行OPCAB的临床资料。 3支病变 4 4例 ,左主干病变 2 1例 ,前降支近端 90 %～ 10 0 %狭窄 2 5例 ,右冠状动脉近端 90 %～ 10 0 %狭窄 17例 ,急诊冠状动脉旁路移植术 13例。 5 3例OPCAB手术全部成功。平均远端吻合口数目 (3.0± 0 .8)个 ,移植物取乳内动脉 2 9例 ,大隐静脉 5 1例。结果　术后并发症 4例 :其中新发脑卒中 1例 ,2次开胸止血 1例 ,恶性心律失常 1例 ,多脏器功能衰竭 1例 ;主动脉内球囊反搏 7例 ;住院死亡 2例。随访时间 1～ 2 4 (10± 7)个月 ,均无急性心血管事件发生 ,非心脏性死亡 1例。结论　OPCAB对冠状动脉严重病变的高龄患者是安全可行而且有效的血运重建方式     

Myocardial infarction during coronary artery bypass surgery — benign event or prognostic omen?

Our observations and experience suggest that an adverse outcome from perioperative infarction occurs predominantly in a defined population of patients. A worsened prognosis and special postoperative interventions need not be anticipated in patients who have simply developed new Q waves after bypass surgery and are free of malignant ventricular arrhythmias and severe degrees of myocardial dysfunction. Furthermore, our data indicates that repeat throacotomy because of bleeding or tamponade early after sustaining a perioperative infarction will adversely affect the outcome of that infarction.     

Readmission and mortality in patients undergoing off-pump coronary artery bypass surgery with fast-track recovery protocol

The development of less invasive methods for myocardial revascularization such as “off-pump” cardiac surgery, and new methods of anesthesia and postoperative care protocols such as “fast-track recovery” (FTRC), have contributed to a significant reduction in postoperative intensive care unit (ICU) and hospital length of stay after cardiac surgical procedures. The objectives of this study were to identify perioperative risk factors of prolonged hospital stay, hospital mortality, and readmission rates in off-pump coronary artery bypass surgery (CABG) patients undergoing the FTRC protocol. Eighty consecutive patients undergoing off-pump coronary artery bypass surgery with FTRC protocol were included in the study. For the first purpose of this protocol, early extubation is defined as removal of the endotracheal tube within 6 h of arrival at the surgical ICU. The second purpose was to obtain a minimal length of stay in the ICU (<24 h) and hospital discharge within 5 days. We analyzed the influence of the preoperative, intraoperative, and postoperative variables on prolonged hospital stay, hospital mortality, and hospital readmission. Three patients died during hospitalization, giving a hospital mortality rate of 3.75%. The causes of hospital death were massive stroke and sepsis. Using multivariate logistic regression analysis, hypertension (P = 0.0185), postoperative stroke (P = 0.0001), and sternal infection (P = 0.0007) were identified as independent predictors of hospital mortality. Mean hospital length of stay was 4.23 ± 0.75 days. Univariate and multivariate logistic regression analysis revealed that postoperative blood use (P = 0.0095) was the major independent predictor of prolonged hospital stay. During the 30-day observation period, seven patients were readmitted. One of these patients died on postoperative day 45 from mediastinitis and sepsis. Multivariate logistic regression analysis identified age (P = 0.0033) and hypertension (P = 0.045) as independent predictors of hospital readmission. FTRC protocols can be performed safely in patients with off-pump CABG, and the mortality and readmission rates following this protocol were found to be within acceptable ranges.     

Comparison of angioplasty and bypass surgery in multivessel coronary artery disease

The role of coronary angioplasty in the treatment of patient with multivessel coronary artery disease has not been fully established. We compared immediate and 1-year follow-up results in 60 patients undergoing coronary angioplasty for multivessel coronary disease in 1982 with 41 patients anatomically suitable for angioplasty but who underwent elective coronary bypass surgery during the same time period. Baseline variables were similar in both groups except for number of vessels diseased which was higher in the surgical group. Angioplasty was initially successful in 70% of cases. There were no deaths. Mean initial hospital days were lower in the angioplasty group. At follow-up there were no significant differences in survival, functional class, occurrence of subsequent myocardial infarction or use of cardiac medications. However, 33% of the successfully dilated patients required either repeat dilatation or subsequent bypass surgery because of restenosis or inadequate initial revascularization. The statistical power of the study was limited due to the small sample sizes. While demonstrating that angioplasty can be successfully performed in patients with multivessel disease, definitive conclusions about the comparability of the two treatments are hampered by possible selection bias and small patient numbers. This issue could be better addressed by a multicenter prospective randomized trial.     

Urgent coronary artery bypass surgery in the presence of Dressler's syndrome

The clinical features of Dressler's syndrome which developed in a patient following a third myocardial infarction responded to a short course of prednisolone. However, angina at rest precipitated urgent coronary artery bypass surgery and pericardectomy.     

冠脉旁路移植术对冠心病三支病变患者近期生活质量的影响

目的 观察冠脉旁路移植术(CABC)对冠心病三支病变患者生活质量的影响.方法 将69例患者按其意愿分为两组,CABG组行CABG术治疗,药物组行标准药物治疗.两组在确诊后于治疗前及治疗后1 a分别填写西雅图心绞痛调查量表(SAQ),观察躯体活动受限程度(PL)、心绞痛稳定程度(AS)、心绞痛发作程度(AF)、治疗满意程度(TS)、疾病认识程度(DP)6个维度积分.结果 两组治疗前后整体生活质量有明显提高(P<0.01),CABG组术后各项指标改善程度较药物组显著(P<0.01);CABG组术前TS、DP低于药物组(P<0.05),术后和药物组无明显差异(P>0.05).结论 CABG术可明显改善冠心病三支病变患者生活质量;尽量减少手术创伤,减少术后并发症,术前及术后加强心理干预是进一步提高患者生活质量的重要措施.     

冠状动脉旁路手术后康复

目的 :探讨冠状动脉搭桥术后早期康复运动的疗效。方法 :对 90例冠状动脉旁路手术患者于术后早期进行康复治疗。于胸部物理治疗的同时协助病人肢体各大关节、肌群先被动、后主动活动。待拔除引流管 2小时后 ,督促指导患者先平地行走后下台阶 ,逐渐至上、下 5层楼梯 (5METs) ,每日 2～3次。结果 :所有病人术后第 3日可下床活动。结论 :冠脉旁路手术的术前、后康复对病人早日回归社会有一定意义     

Diabetes in patients undergoing coronary artery bypass grafting. Impact on perioperative outcome

Summary Diabetes mellitus is an established risk factor related to significant morbidity and mortality after coronary artery bypass grafting. Data on 9682 patients undergoing coronary artery bypass grafting either with (n=8917) or without cardiopulmonary bypass (off-pump coronary artery bypass grafting; n=765) were subjected to an univariate analysis to identify potential associations between diabetes mellitus and 26 a priori selected perioperative outcome variables. Those having a significant association with diabetes were then subjected to a stepwise logistic regression model to identify the impact of diabetes as compared to additional 22 different a priori chosen patient related risk factors and treatment variables. Prevalence of outcome variables independently associated with diabetes has been determined in the subgroup of diabetics undergoing coronary artery bypass grafting with cardiopulmonary bypass or off-pump coronary artery bypass grafting surgery to evaluate the effect of avoiding cardiopulmonary bypass on perioperative patient outcome. Diabetes mellitus was defined as glucose intolerance either treated dietary, with oral hypoglycemics or with insulin. According to this definition of diabetes mellitus we found an overall prevalence of 37.1% (coronary artery bypass grafting with cardiopulmonary bypass: 37.5%; off-pump coronary artery bypass grafting: 32.5%). Eleven outcome variables having a significant association with diabetes were identified. Diabetes could be identified as an independent predictor of postoperative delirium, renal dysfunction and respiratory insufficiency. Prevalence of these three variables was lower in diabetics undergoing offpump coronary artery bypass grafting as in those undergoing coronary artery bypass grafting with cardiopulmonary bypass surgery reaching statistical significance with regard to postoperative delirium and respiratory insufficiency. In conclusion, diabetes mellitus is a significant independent predictor for three postoperative outcome variables in coronary artery bypass surgery. Avoiding cardiopulmonary bypass in diabetics seems to have a beneficial effect.     

Awake off- pump coronary artery bypass surgery in 25 patients

Objectives To test the feasibility of the use of high thoracic epidural anesthesia as a sole anesthetic in patients undergoing off pump coronary artery bypass surgery, avoiding general anesthesia. Methods Between October 2002 to April 2003, twenty five cases underwent beating heart coronary artery revascularization without endotracheal general anesthesia, using high thoracic epidural anesthesia and analgesia. All the patients underwent epidural catheterization on the evening before the surgery. Resuits The patients in all received 71 grafts (single n= 11, double n = 5, triple n = 6, quadruple n =3). Six patients underwent repeat coronary artery bypass. Except one was converted to general anesthesia and cardiopulmonary bypass, the other patients underwent off- pump coronary artery bypass graft surgery, 2 patients underwent grafting via left thoracotomy (MIDCAB) and the rest through mid sternotomy. There was no mortality. Mean length of stay in the intensive care unit was 16 . 2 ( 4.2 hours and hospital was 3.0(1.2 days. Conclusions Our experience confirms the feasibility of performing muhiple coronary artery bypasses in conscious patients without endotracheal general anesthesia.     

Atrial fibrillation independently prolongs hospital stay after coronary artery bypass surgery

BACKGROUND: Atrial fibrillation (AF) is the most common arrhythmia occurring in patients after coronary artery bypass surgery (CABG). HYPOTHESIS: The purpose of this study was to determine whether AF independently prolonged postoperative length of stay (LOS). METHODS: Consecutive patients undergoing elective CABG were identified. Baseline clinical variables, postoperative course including the development of AF, and postoperative LOS were recorded. RESULTS: In all, 216 patients (aged 61 +/- 13 years) were examined. Postoperative LOS was 11.3 +/- 6.4 days (median LOS = 9 days). Fifty-five patients (25%) developed AF. Among 16 variables examined, the univariate predictors of LOS included age (p < 0.001), preoperative left ventricular ejection fraction (p < 0.001), absence of a prior smoking history (p < 0.05), bypass limited to venous conduits (p < 0.001), postoperative AF (p < 0.001), and the occurrence of a postoperative event (p < 0.001). Length of stay for patients who developed AF was significantly longer than that for patients who did not (15.1 +/- 9.0 vs. 10.0 +/- 4.6 days, p < 0.001). After adjusting for other significant variables, the occurrence of AF after CABG independently prolonged LOS: patients who developed AF stayed 3.2 +/- 1.7 days longer than patients who did not (p < 0.001). CONCLUSIONS: Atrial fibrillation lengthens hospital stay after CABG, and its effect is independent of other important variables. Identification of patients who are at risk for AF and successful treatment to prevent AF will likely contribute to major reductions in consumption of health care resources in patients with CABG.     

Improvement in quality of life differs between women and men after coronary artery bypass surgery

OBJECTIVE: To study improvement in quality of life (QoL) after coronary artery bypass grafting (CABG) in relation to gender. BACKGROUND: Women generally report worse QoL after CABG than men. However, women are older and more symptomatic prior to surgery, which should be considered in comparative analyses. METHODS: We studied consecutive patients who underwent CABG between 1988 and 1991 [n = 2121] with a QoL questionnaire containing the Physical Activity Score, the Nottingham Health Profile and the Psychological General Well-being Index prior to, 3 months, 1 year and 2 years after surgery. RESULTS: Females were older than men with more concomitant diseases preoperatively. QoL was improved on all postoperative occasions for both sexes. Improvement in the Physical Activity Score was somewhat, although not significantly, greater in males. Improvement in the Nottingham Health Profile was greater in females. General well-being showed no consistent pattern for improvement. CONCLUSIONS: QoL is significantly improved after CABG in both sexes throughout follow-up. There is a complex association between improvement in various aspects of QoL and gender.     

Effectiveness of triple-site triggered atrial pacing for prevention of atrial fibrillation after coronary artery bypass graft surgery

BACKGROUND: Recently, several temporary multisite pacing methods have been developed for prevention of postoperative atrial fibrillation (AF). HYPOTHESIS: In this study, we evaluated the effect of triple-site temporary triggered pacing in the AAT mode on the development of AF in patients undergoing coronary artery bypass graft (CABG) at high risk for developing postoperative AF. METHODS: A total of 70 patients undergoing CABG were randomly assigned either to pacing group (study group, n = 35 patients) or to no pacing group (control group, n = 35 patients). The external pacemaker was programmed to pace at the atrial triggered mode at a lower rate of 40 beats/min for 4 days. RESULTS: Atrial fibrillation, defined as lasting > 30 s, occurred in 4 patients (11.4%) in the study group and in 16 patients (45.7%) in the control group (p = 0.003). Sustained AF, defined as AF lasting > 10 min, also was observed less frequently in the study group than in the control group (11.6 vs. 37.1%, p = 0.024). Triple-site triggered atrial pacing was observed to reduce the incidence of AF by 75% and the incidence of sustained AF by 69%. CONCLUSIONS: We believe that multiple-site temporary pacing in the triggered mode is an effective way of preventing postoperative AF. This technique may be used especially in patients at high risk of developing AF.     

Immediate coronary artery bypass graft surgery for acute coronary syndrome – Outcomes and trends over the past eight years

BackgroundPatients with acute coronary syndrome (ACS) who are indicated for an immediate cardiac procedure represent a high-risk population, burdened with an increased frequency of serious postoperative complications and higher mortality. In our study, we present the outcomes and trends within a group of patients who underwent a surgical procedure at our centre between 2006 and 2013.MethodsWe retrospectively analyzed data obtained from the National Registry of Cardiac Surgery for the period between 2006 and 2013; the patient population was further subdivided into two time periods, in order to facilitate the comparison: 2006–2009, n = 185; 2010–2013, n = 112. Furthermore, three groups were defined within each of the time periods, according to the main reason for performing the emergency surgery: unstable angina (UA), acute myocardial infarction (AMI) and cardiogenic shock (CS). Consequently, corresponding groups in both time periods were compared.The main observed parameter was the postoperative mortality within 30 days from the procedure. Other analyzed attributes included the overall length of stay, length of ICU stay, ventilation time and the number of postoperative complications (reoperation due to bleeding, infectious complications of the sternotomy, renal failure requiring haemodialysis, multiple organ failure, stroke).ResultsImmediate surgical procedures represented on average 6.45% (4.7-9.2%) of the total number of surgeries performed at our centre per year between 2006 and 2013. The number of this type of surgery manifests a downward trend: 7.7% (2006–2009) vs. 5.2% (2010–2013). We also noted changes in the trends of the number of patients undergoing surgery due to UA: 40% (2006–2009) vs. 25% (2010–2013), AMI: 50% (2006–2009) vs. 55% (2010–2013) and CS: 11% (2006–2009) vs. 20% (2010–2013). The thirty-day mortality in the whole patient group was 15.49%: 12.4% (2006–2009) and 20.5% (2010–2013).ConclusionsThe analysis of our patient file shows a decreasing trend in the number of patients undergoing emergency surgery due to ACS in our centre in the course of the last eight years. Between 2010 and 2013, the proportional representation of patients undergoing surgery due to UA decreased, while the percentage of patients undergoing surgery due to AMI and CS increased. Within the population of patients with ACS, we were also able to determine an increased frequency of some risk factors and increased thirty-day mortality among patients undergoing surgery.     

Preoperative frailty and adverse outcomes following coronary artery bypass grafting surgery in US veterans

Background

Contemporary guidelines emphasize the value of incorporating frailty into clinical decision-making regarding revascularization strategies for coronary artery disease. Yet, there are limited data describing the association between frailty and longer-term mortality among coronary artery bypass grafting (CABG) patients.

Methods

We conducted a retrospective cohort study (2016–2020, 40 VA medical centers) of US veterans nationwide that underwent coronary artery bypass grafting (CABG). Frailty was quantified by the Veterans Administration Frailty Index (VA-FI), which applies the cumulative deficit method to render a proportion of 30 pertinent diagnosis codes. Patients were classified as non-frail (VA-FI ≤ 0.1), pre-frail (0.1 < VA-FI ≤ 0.2), or frail (VA-FI > 0.2). We used Cox proportional hazards models to ascertain the association of frailty with all-cause mortality. Our primary study outcome was 5-year all-cause mortality; the co-primary outcome was days alive and out of the hospital within the first postoperative year.

Results

There were 13,554 CABG patients (median 69 years, 79% White, 1.5% women). The mean pre-operative VA-FI was 0.21 (SD: 0.11); 31% were pre-frail (VA-FI: 0.17) and 47% were frail (VA-FI: 0.31). Frail patients were older and had higher co-morbidity burdens than pre-frail and non-frail patients. Compared with non-frail patients (13.0% [11.4, 14.7]), there was a significant association between frail and pre-frail patients and increased cumulative 5-year all-cause mortality (frail: 24.8% [23.3, 26.1]; HR: 1.75 [95% CI 1.54, 2.00]; pre-frail 16.8% [95% CI 15.3, 18.4]; HR 1.2 [1.08,1.34]). Compared with non-frail patients (mean 362[SD 12]), pre-frail (mean 361 [SD 14]; p < 0.01) and frail patients (mean 358[SD 18]; p < 0.01) spent fewer days alive and out of the hospital in the first postoperative year.

Conclusions

Pre-frailty and frailty were prevalent among US veterans undergoing CABG and associated with worse mid-term outcomes. Given the high prevalence of frailty with attendant adverse outcomes, there may be an opportunity to improve outcomes by identifying and mitigating frailty before surgery.     

OPCABG术后阿司匹林抵抗的观察

目的 探讨非体外循环冠状动脉搭桥术(OPCABG)后阿司匹林抵抗(AR)规律.方法 应用流式细胞技术,检测56例OPCABG患者血小板膜表面活化标记物CD62P及PAC-1的表达情况.结果 术前口服阿司匹林后CD62P、PAC-1阳性表达率分别为6.04%±5.80%、13.63%±12.70%;术后1 d分别为10.20%±3.40%、15.45%±9.40%,均明显降低(P＜0.05);术后5 d分别为21.02%±16.52%、39.24%±11.53%,与术后1 d相比均明显升高(P＜0.05);术后10 d分别为5.65%±1.12%、16.01%±5.43%,与术前口服阿司匹林后相比,P＞0.05.结论 OPCABG后存在一过性AR.     

乳内动脉在冠状动脉旁路移植术中的应用

为了探索国人应用乳内动脉做冠状动脉旁路移植术的近期临床效果,从94年10月至98年3月共60例冠心病人采用乳内动脉、桡动脉及大隐静脉做冠状动脉旁路移植术(CABG).大多数为三支病变及左主干病变.中低温及常温体外循环,经主动脉根部间断灌注冷血或温血停跳液心肌保护.强调在取乳内动脉时要格外小心,不要用器械钳夹乳内动脉,牵拉应轻柔.采用8-0 Prolene线做乳内动脉与前降支等做远端吻合.吻合完成后应将乳内蒂固定于心脏表面,减少吻合口张力.最后切开左上心包让乳内动脉走行平坦,无张力.平均搭桥支数为3.5根.术后死亡1例,死亡率1.7%.使用乳内动脉做CABC是安全有效的.59例病人心绞痛完全缓解,活动能力及生活质量明显提高.     

Determinants of an impaired quality of life five years after coronary artery bypass surgery

OBJECTIVE: To identify determinants of an inferior quality of life (QoL) five years after coronary artery bypass grafting (CABG). SETTING: University hospital. PARTICIPANTS: Patients from western Sweden who underwent CABG between 1988 and 1991. MAIN OUTCOME MEASURES: Questionnaires for evaluating QoL before CABG and five years after operation. Three different instruments were used: the Nottingham health profile (NHP), the psychological general wellbeing index (PGWI), and the physical activity score (PAS). RESULTS: 2121 patients underwent CABG, of whom 310 died during five years' follow up. Information on QoL after five years was available in 1431 survivors (79%). There were three independent predictors for an inferior QoL with all three instruments: female sex, a history of diabetes mellitus, and a history of chronic obstructive pulmonary disease. Multivariate analysis showed that a poor preoperative QoL was a strong independent predictor for an impaired QoL five years after CABG. An impaired QoL was also predicted by previous disease. CONCLUSIONS: Female sex, an impaired QoL before surgery, and other diseases such as diabetes mellitus are independent predictors for an impaired QoL after CABG in survivors five years after operation.     

Upper gastrointestinal haemorrhage following coronary artery bypass grafting

Background: Upper gastrointestinal (UGI) bleeding is a relatively common and potentially fatal complication of coronary artery bypass graft (CABG) surgery. However, little is known of this problem, including its incidence, predisposing factors and safety of endoscopy in these patients. Aim: To document the incidence, site, predisposing factors and outcome of UGI bleeding following CABG surgery. Also, to assess the safety of UGI endoscopy in these patients. Method: Retrospective study of UGI haemorrhage following CABG at one institution between 1976 and 1991. Results: Fifty-five of 10,573 patients (0.5%) suffered a major UGI haemorrhage (as defined by need for transfusion or presence of melaena or haematemesis associated with hypotension). Of 51 patients undergoing endoscopy or laparotomy, 42 (82%) bled from duodenal ulceration. Five patients bled from gastric ulcers and one each from oesophagitis and Mallory Weiss tear. Nine patients underwent endoscopic therapy, which initially arrested haemorrhage in eight patients. However, three patients rebled and required surgery. Eight patients underwent surgery as initial therapy, resulting in an overall surgical rate of 20%. One patient died due to multi system failure following surgery. There were no complications from endoscopy. Patients who bled were more likely to have received inotropic support post-operatively prior to the haemorrhage (p < 0.05) and tended to be older than controls (mean age 65.6 years vs 58.7 years, p < 0.01). Twenty-one of the patients (38%) who bled had a past history of peptic ulceration or dyspepsia compared with 9% of controls (p < 0.001). Seven (12.5%) had previously bled from peptic ulceration. Patients who bled were less likely to have received H₂-receptor antagonists in the perioperative period than controls (4%vs 20%, p< 0.05). Conclusion: Upper GI haemorrhage following CABG is relatively frequent. It is usually secondary to duodenal ulceration. Endoscopy is a safe procedure in this patient group. Mortality did not differ between index patients who suffered a UGI haemorrhage and controls undergoing CABG who did not bleed.     

Mid-term outcomes of off-pump versus on-pump coronary artery bypass graft surgery

OBJECTIVE:

To evaluate survival and readmissions to hospital for cardiac events or coronary revascularization (REVASC) in patients having off-pump (OPCAB) versus conventional on-pump (CCAB) coronary artery bypass graft surgery (CABG).

METHODS:

Of 11,368 consecutive patients undergoing isolated CABG between 1996 and 2002, 514 had OPCAB surgery. Using propensity scores, 503 CCAB patients were randomly matched to 503 OPCAB patients.

RESULTS:

There were no clinical or statistical differences between the two groups for any prognostic variable. However, OPCAB patients received significantly fewer distal anastomoses than the CCAB group (2.6±1.0 versus 3.1±1.0; P<0.001). There was no difference in operative mortality (OPCAB 1.0%, CCAB 1.4%; P=0.6), but the OPCAB group had significantly fewer operative strokes (0.2% versus 1.8%; P=0.01). Follow-up was 99.7% complete at 2.2±1.2 years (range 0 to 6 years). Twice as many OPCAB patients (n=24) required REVASC compared with the CCAB (n=11) group. The following five-year actuarial outcomes are presented for CCAB and OPCAB, respectively: survival: 77±6%, 76±8%, P=0.8; freedom from REVASC: 95±3%, 92±2%, P=0.02; and cardiac event-free survival: 76±5%, 62±8%; P=0.05. Cox regression revealed that OPCAB was a significant independent predictor of poorer freedom from REVASC (RR 2.2, 95% CI 1.0 to 4.6; P=0.04) and cardiac event-free survival (RR 1.6, 95%CI 1.1 to 2.2; P=0.02).

CONCLUSIONS:

The use of OPCAB remains controversial. These results, from this early experience, suggest that despite improved hospital outcomes, the lesser degree of REVASC raises concerns about the need for repeat revascularization in the OPCAB group.