ObjectiveTo analyze the effect of carotid artery stenosis degree and intervention for carotid artery stenosis on the incidence of central nervous system complications after off-pump coronary artery bypass grafting (OPCABG) and explore the influencing factors. MethodsA total of 1 150 patients undergoing OPCABG in our hospital from June 2018 to June 2021 were selected and divided into two groups according to whether there were central nervous system complications, including a central nervous system complication group [n=61, 43 males and 18 females with a median age of 68.0 (63.0, 74.0) years] and a non-central nervous system complication group [n=1 089, 796 males and 293 females with a median age of 65.5 (59.0, 70.0) years]. The risk factors for central nervous system complications after OPCABG were analyzed. ResultsUnivariate analysis showed that age, smoking, hyperlipidemia, preoperative left ventricular ejection fraction, intra-aortic ballon pump (IABP), postoperative arrhythmia, postoperative thoracotomy and blood transfusion volume were associated with central nervous system complications. The incidence of central nervous system complications in patients with severe carotid artery stenosis or occlusion (11.63%) was higher than that in the non-stenosis and mild stenosis patients (4.80%) and moderate stenosis patients (4.76%) with a statistical difference (P=0.038). The intervention for carotid artery stenosis before or during the operation did not reduce the incidence of central nervous system complications after the operation (42.11% vs. 2.99%, P<0.001). Age, postoperative arrhythmia, severe unilateral or bilateral carotid artery stenosis and occlusion were independent risk factors for postoperative central nervous system complications (P<0.05). Conclusion The age, smoking, hyperlipidemia, preoperative left ventricular ejection fraction, intraoperative use of IABP, postoperative arrhythmia, secondary thoracotomy after surgery, blood transfusion volume and OPCABG are associated with the incidence of postoperative central nervous system complications in patients. Age, postoperative arrhythmia, severe unilateral or bilateral carotid artery stenosis and occlusion are independent risk factors for postoperative central nervous system complications. In patients with severe carotid artery stenosis, preoperative treatment of the carotid artery will not reduce the incidence of central nervous system complications.
Objective To investigate the function of a self-designed bilayered negative pressure wound therapy (b-NPWT) in reducing the occurrence of these complications through a clinical randomized controlled trial. Methods We included 72 coronary heart disease patients in our hospital from December 2013 through March 2014. There were 48 males and 24 females aged 38.4±18.6 years undergoing coronary artery bypass graft(CABG) surgery, and great saphenous veins were chosen as grafts. Patients were equally randomized into a trial group and a control group. The patients in the trial group underwent 5 d of b-NPWT for thigh incision and interrupted suture for shank incision after the harvesting of great saphenous veins. Patients in the control group received an interrupted suture for both thigh incision and shank incision after the harvesting of great saphenous veins. We evaluated the function of b-NPWT by reducing the complications arising from the harvesting of great saphenous veins in CABG patients. Results The incidences of early complications, such as lymphedema, incision infection, non-union, and skin flap necrosis of the vascular zone in the trial group were significantly lower than those of the control group. There was no death or new problem in heart or deep venous thrombosis in both groups. No complication occurred in long term. The incidence of lower limb edema was lower in the trial group than that in the control group at the end of 3 months follow-up. Conclusion B-NPWT can effectively prevent lymphorrhagia in CABG patients who underwent the harvesting of great saphenous veins. It can also reduce the incidence of complications and discomfort of the patients.
Minimally invasive cardiac surgeries are the trend in the future. Among them, robotic cardiac surgery is the latest iteration with several key-hole incision, 3-dimentional visualization, and articulated instrumentation of 7 degree of ergonomic freedom for those complex procedures in the heart. In particular, robotic mitral valve surgery, as well as coronary artery bypass grafting, has evolved over the last decade and become the preferred method at certain specialized centers worldwide because of excellent results. Other cardiac procedures are in various stages of evolution. Stepwise innovation of robotic technology will continue to make robotic operations simpler, more efficient, and less invasive, which will encourage more surgeons to take up this technology and extend the benefits of robotic surgery to a larger patient population.
ObjectiveTo analyze the risk factors of new-onset postoperative atrial fibrillation (POAF) after coronary artery bypass grafting (CABG).MethodsFrom September 2011 to October 2013, 1 614 consecutive patients underwent elective coronary artery bypass grafting in Fuwai Hospital. There were 1 281 males and 333 females at average age of 60.3±8.4 years. Holter data recorded for 5 days after operation were collected and analyzed. The risk factors associated with POAF were assessed according to the baseline and intraoperative data, and the positive variables were stratified.ResultsA total of 314 patients (19.5%) developed new-onset POAF. The rate of POAF was elevating with the increase of age (P<0.001).ConclusionAge was an independent risk factor for POAF in patients undergoing elective CABG alone.
Objective To investigate the impact of peripheral artery disease (PAD) on the short-term prognosis after coronary artery bypass grafting (CABG) in patients of different age groups. MethodsRetrospective inclusion of patients who underwent CABG at Tongji Medical College Affiliated Union Hospital of Huazhong University of Science and Technology from 2016 to 2020. Divided into four groups by age (<50 years, 50-60 years, 60-70 years, >70 years). Propensity score matching (PSM) was used to balance the baseline characteristics of PAD and non PAD patients across different age groups. The primary endpoint of the study was all-cause mortality, and the secondary endpoint was major adverse cardiovascular and cerebrovascular events (MACCE) during the perioperative period. ResultsTotally, 1 516 patients were enrolled, including the GroupⅠ (<50 years, n=167), Group Ⅱ (50-60 years, n=477), Group Ⅲ (60-70 years, n=688), and Group Ⅳ (>70 years, n=184). After PSM treatment, a total of 375 pairs of patients (75.2% male) were successfully matched. Only in the age group of 60-70 years, the in-hospital mortality rate (7.73% vs. 1.45%, P＜0.01) and MACCE incidence rate (21.26% vs. 13.04%, P=0.02) of PAD patients were significantly higher than those of the non PAD group. Further multivariate analysis suggests that PAD is an independent risk factor for in-hospital mortality (OR=3.96, P＜0.01) and MACCE (OR=1.58, P=0.04) in this group, while there is no statistically significant difference in other age groups. Conclusion: PAD significantly increases the risk of recent mortality and MACCE in CABG patients aged 60-70 years, and perioperative management needs to be optimized for this population.
ObjectiveTo explore the outcomes achieved by using left internal mammary artery (LIMA) to radial artery (RA) or saphenous vein (SV) Y-composite grafts in minimally invasive direct coronary artery bypass grafting (MIDCAB) for patients with multiple vessel disease. MethodsFrom January 2009 through May 2015, 56 patients (36 males and 20 females) with multiple vessel disease underwent MIDCAB with LIMA-RA or LIMA-SV Y-composite grafts without cardiopulmonary bypass in our hospital. MIDCAB was performed through a left anterior minithoracotomy. Thirty four patients used LIMA-RA grafts, and twenty two patients used LIMA-SV grafts. ResultsAll patients success-fully underwent MIDCAB with LIMA-SV or LIMA-RA Y-composite grafts. No patient required to convert to sternotomy during the surgery. Revascularization was performed for 2 target vessels in 12 patients, 3 target vessels in 41 patients and 4 target vessels in 3 patients. Mean postoperative ventilation time was 27.14±31.35 h. Mean ICU time was 3.16±2.53 d, and mean postoperative inhosptial time was 11.89±3.91 d. Thirty-day mortality was 1.79% (1/56). At a follow-up of 1 to 77 months, no patients received revascularization. The overall survival at 2 years postoperatively was 94.4%±5.4% in the LIMA-RA group and 86.8%±9.2% in the LIMA-SV group (P=0.299). The patency rate of LIMA was 100.0%. The overall patency rate of RA or SV grafts at 2 years postoperatively was 90.3%±5.3% or 86.7%±6.3% with no statistical difference (P=0.265). ConclusionMIDCAB with LIMA-RA or LIMA-SV Y-composite grafts is a safe and an effective procedure with favorable early and mid-term outcomes for patients with multiple vessel disease. LIMA-SV composite graft can be used as an alternative graft for patient whose RA is not possible or advisable.
Objective To summarize and analyze the clinical experience and surgical results of re-do coronary artery bypass grafting (Re-CABG) for reconvert coronary artery disease. Methods Eighteen patients who underwent Re-CABG in this hospital between June 2001 and December 2006 were analyzed. There were 15 males and 3 females aged from 65 to 78 years old. Seven patients were in class III angina(CCS) and 11 patients were in class IV. Coronary artery angiography showed stenosis or occlusion of great saphenous vein grafts in 16 patients, occlusion of left internal mammary artery(LIMA) grafts in 2 patients and new significant stenosis of the native coronary artery in 6 patients. All Re-CABG were done through re-sternotomy. Fifteen patients underwent cardiopulmonary bypass (CPB for their Re-CABG and 3 patients underwent off-pump Re-CABG. The concomitant procedures included left ventricular aneurysmectomy in 1 patient, mitral valve repair in 3 patients, combined aortic and mitral valve replacement and carotid endarterectomy in 1 patient. Bilateral IMA were used in 4 patients, LIMA in 12 patients, radial artery in 3 patients, and the rest of the grafts consisted of great and lesser saphenous vein. Results In on-pump Re-CABG, the aortic cross clamp time was 57±26min (range 45 to 112 min), the CPB time was 78±24min (range 66 to 140 min).The mean number of distal anastomosis per patient was 3.11(range 1 to 5). Intraoperative flow study of the grafts by Medi-Stim Butterfly showed a mean flow rate of 27.0±12.5 ml/min with pulsatility index( PI)less than 4.2. Intra-aortic balloon pump (IABP) was used in 1 patient who underwent concomitant aortic and mitral valve replacement and carotid endarterectomy. Post-operatively this patient developed renal failure and expired 6 days later. There was no residual angina and peri-operative myocardial infarction in the remain 17 patients.The post-operatively mechanical ventilation time varied from 5 to 15 hours, chest drainage varied from 290 to 1 040ml. Seventeen patients were discharged uneventfully. Follow-up from 6 months to 4.5years in 17 patients showed no evidence of recurrent angina. Postoperative coronary artery angiography in 4 patients showed patent grafts. Conclusion Re-CABG can be performed as safely and effectively as primary CABG in spite of the fact that it is more demanding. Selecting the proper target vessels, satisfactory blood flow of grafts, complete revascularization and proper peri-operative management are all key factors to a successful Re-CABG.
Objective To investigate the impact of edaravone on serum reactive oxygen species during the perioperative period of off-pump coronary artery bypass grafting （OPCAB）. Methods A total of 40 patients who underwent selective OPCAB in the First Hospital of Hebei Medical University between June 2011 and November 2012 were prospectively enrolled in this study. All the patients were randomly divided into a trial group and a control group by a random digitaltable method with 20 patients in each group. There were 13 males and 7 females in the trial group with their age of 40-67（51.8±11.5） years， and 9 males and 11 females in the control group with their age of 42-70 （53.5±13.1） years. Afteranesthesia induction， patients in the trial group received continuous intravenous infusion of edaravone 60 mg （diluted in 100 ml saline）， while patients in the control group received continuous intravenous infusion of saline 100 ml， both of whichwere finished within 30 minutes. Venous blood samples were taken 24 hours preoperatively （T1）， 1 hour after skin incision（T2）， at the end of the surgery （T3） and 24 hours postoperatively （T4） to examine the concentration of superoxide dismutase（SOD） and malondialdehyde （MDA）. The data of the two groups were compared. Results All the patients successfully underwent their surgery and were included in the analysis. At the T2， T3 and T4 time point， SOD concentration was 80.3±21.3 U/ml， 78.5±17.4 U/ml and 81.4±17.5 U/ml， and MDA concentration was 10.2±1.8 nmol/ml， 11.3±1.9 nmol/ml，14.8±2.1 nmol/ml respectively in the control group；SOD concentration was 92.8±18.4 U/ml，90.0±18.1 U/ml，and 88.7±18.7 U/ml，and MDA concentration was 7.2±1.7 nmol/ml，8.2±1.2 nmol/ml，10.2±1.3 nmol/ml respectively in the trial group. At each above time point， SOD activity was significantly higher in the trial group than the control group （F=2.90，P=0.003；F=2.80，P=0.003；F=2.80，P=0.001）， and MDA concentration was significantly lower in the trial group than the control group （F=2.79，P=0.001；F=2.80，P=0.001；F=2.90，P=0.000）. Conclusion Edaravone can decrease serum reactive oxygen species caused by OPCAB and reduce myocardial injury.
Hybrid coronary revascularization (HCR) combining with coronary artery bypass grafting (CABG) has a long-term patency of left internal mammary artery to left anterior descending artery (LIMA-LAD) grafting, and the percutaneous coronary intervention (PCI) has a minimal invasiveness. It provides an alternative revascularization for patients with coronary heart disease. For patients who meet the HCR indications, most studies suggest that HCR can significantly reduce perioperative trauma, and offer favorable mid- and long-term prognosis, which is comparable with traditional revascularization strategies. Based on the major research results in this field in the past 10 years, we review the current application status and discuss the potential future direction of HCR in this paper.
Objective To investigate the clinical application of the right grstroepiploic artery (RGEA) in offpump coronary artery bypass grafting (OPCAB). Methods We retrospectively analyzed the clinical data of the 38 patients who underwent RGEA grafts for OPCAB between December 2008 and July 2009 in the First Affiliated Hospital of Nanjing Medical University. According to the difference of grafts, 76 patients undergoing OPCAB were divided into two groups. In the RGEA group, there were 38 patients including 36 males and 2 females with an age of 65.87±6.29 years. For the patients in this group, OPCAB was carried out with RGEA and other routine conduits as grafts. The control group had 38 patients including 35 males and 3 females with an age of 66.68±6.24 years. They underwent OPCAB with left internal mammary artery (LIMA), radial artery (RA), or saphenous vein (SV) as grafts. The intraoperative and postoperative clinical data for patients in both groups were analyzed and compared. Results All operations were carried out without serious complications like reoperation for bleeding, functional delayed gastric emptying, or severe infection, and no operative death occurred. Compared with the control group, operative time in the RGEA group was longer (295.53±45.16 min vs. 262.50±42.44 min,P=0.001), the number of anastomotic stomas [CM(159mm]was less (4.71±0.56 vs. 5.29±0.92, P=0.002), and less intraoperative plasma was consumed (194.74±186.30 ml vs. 565.79±382.70 ml, P=0.000). The 24 h drainage loss (394.71±205.36 ml vs. 536.32±258.85 ml, P=0.008), the blood cell consumption (1.67±1.48 U vs. 2.81±2.48 U, P=0.010) and the postoperative hospital stay (12.47±3.20 d vs. 15.47±9.31 d, P=0.035) were significantly lower in the RGEA group compared with those in the control group. Meanwhile, the time of postoperative mechanical ventilation time was longer in the RGEA group than that in the control group (1 398.82±1 349.94 min vs. 985.39±170.30 min, P=0.036). Seventytwo patients were followed up for a period from 9 to 17 months with 4 cases lost. No myocardial ischemia occurred in both groups of patients. Conclusion RGEA is an effective arterial conduit for OPCAB. It needs high technology and takes long operative time to apply RGEA in OPCAB.