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Article in Chinese | WPRIM | ID: wpr-958438


Objective:To examine the long-term survival outcomes and identify mortality risk factors for coronary artery bypass grafting patients who received venoarterial extracorporeal membrane oxygenation(VA-ECMO) for postcardiotomy cardiogenic shock.Methods:Data from 121 consecutive venoarterial extracorporeal membrane oxygenation-treated coronary artery bypass grafting(CABG) patients at Beijing Anzhen Hospital between June 2012 and December 2016 were analyzed. There were 84 males and 24 females. The median age was 62(55, 67) years, and the median body mass index was 25(23, 27)kg/m 2. Thirty-seven patients(34%) had left main artery disease, and 56 patients(52%) underwent off-pump CABG. According to the 3 year survival outcome after ECMO, patients were divided into survival group(35 cases) and non-survival group(73 cases). The differences of clinical indicators between the two groups were compared and analyzed. Multivariable Cox regression modeling was used to identify factors independently associated with 36 month mortality. Results:Sixty-five patients(60%) could be weaned from VA-ECMO, 49 patients(45%) survived to hospital discharge, and 35 patients(32%) survived to 3 years. The median( IQR) time on VA-ECMO support was 4(3, 5) days. The median( IQR) length of ICU stay and hospital stay duration were 8(5, 12) and 20(13, 29) days, respectively. Older age( HR=1.06, 95% CI: 1.03-1.10, P<0.001), left main coronary artery disease( HR=1.62, 95% CI: 1.00-2.60, P=0.048), and vasoactive inotropic score( HR=1.09, 95% CI: 1.03-1.17, P=0.007)were independent risk factors associated with 3-year mortality. The area under the receiver operating characteristic curve for the model, which was constructed with age≥60years, left main coronary artery disease, and vasoactive inotropic score>60, was 0.88(95% CI: 0.80-0.95). Conclusion:Long-term survival of patients who survive to discharge appears favorable. Older age, left main coronary artery disease, and vasoactive inotropic score were associated with 3-year mortality in coronary artery bypass grafting patients who received VA-ECMO.

Article in Chinese | WPRIM | ID: wpr-912285


Objective:To describe a distal anastomosis support (DAS) technique, and retrospectively investigate the effect of DAS on the mid-term graft patency of patient with small posterior descending artery.Methods:Between January and December 2016, 100 patients with triple-vessel disease and small PDA who continuously underwent off-pump coronary artery bypass grafting (OPCABG) (OPCABG group, n=50) and OPCABG with DAS for anastomosis of PDA grafted by saphenous vein (SVG) (OPCABG+ DAS group, n=50) were evaluated retrospectively. The dynamic changes of electrocardiogram and TnI level were observed within 48h after the surgery. All patients came back to follow-up visit 6th, 12th, 24th and 36th postoperative month. The primary endpoint was the graft failure (FitzGibbon B or O) of SVG-PDA on the follow-up CTA.Results:There was no death during the operation. There was no acute inferior wall myocardial infarction confirmed by electrocardiogram. Peak TnI within 48h of surgery was 0.74(0.98)ng/ml vs. 0.92(1.29)ng/ml, P>0.05, and the number of patients with peak TnI≥70×ULN was 3(6%, 3/50) vs.5(10%, 5/50), P>0.05. There was no postoperative death, and all the patients were discharged 5-15 days postoperatively. We found significantly improved cumulative graft patency in OPCABG+ DAS group at 36 months after operation [85.7%(42/49) vs. 68.0%(34/50), P<0.05). In multivariate logistic regression analysis, PDA with atherosclerotic lesions ( OR=6.513, 95% CI: 1.279-33.180, P=0.024), and peak TnI≥70×ULN within 48 h of surgery ( OR=5.948, 95% CI: 1.128-31.368, P=0.036) were independent predictors of graft failure, whereas concomitant DAS ( OR=0.222, 95% CI: 0.069-0.713, P=0.011) was significant protective factor. Conclusion:Concomitant DAS conferred superior mid-term patency of SVG-PDA in patients with small PDA. Adding the DAS procedure to OPCABG may be a promising surgical option for small PDA with atherosclerotic lesions.

Article in Chinese | WPRIM | ID: wpr-800480


Objective@#To evaluate the feasibility and validity of combined directly epicardial and transapical endocardial substrate ablation guided by Carto mapping for ventricular tachycardia(VT) with left ventricular aneurysm(LVA) intra-operation in a swine model.@*Methods@#Twenty-four swine models with sustained VT and LVA were randomly divided into study group(radiofrequency ablation, RFCA, from epicardium via direct-view and endocardium via transapical access, 12 cases) and control group(endocardial RFCA via retrograde transaortic access, 12 cases). Substrate mapping for captured abnormal potentials via endocardium and epicardium was used to precisely locate the low-voltage areas. After ablation in two groups, VT was induced again to compare the effectiveness of different RFCA strategies.@*Results@#Three dimensional electro-anatomic mapping was implemented successfully in two groups under open chest. And VT substrates were largely located in the border zone of LVA. All objects in the study group underwent endocardial ablation via transapical access smoothly without operative failure. When VT inducing again, 2 cases of study group was with inducible VT, however, VT recurrence in control group was 5 cases, P=0.04.@*Conclusion@#Combined direct epicardial and transapical endocardial substrate mapping and ablation appeared to be feasible and effective for treating VT with LVA under thoracotomy.

Article in Chinese | WPRIM | ID: wpr-735052


Objective To evaluate the guiding role of CYP2C19 gene assay in dual antiplatelet therapy(DAPT) after off-pump coronary artery bypass grafting ( OPCABG ) .Methods The patients who received scheduled OPCABG between May 2017 and May 2018 were recruited in this study.According to the results of CYP2C19 gene assay, the patients who carried CYP2C19 gene *2/*2,*2/*3 and*3/*3 mainly causing slow metabolism of clopidogrel were randomly divided into two groups: the clopidogrel group(patients receiving 100mg/qd aspirin plus 75mg/qd clopidogrel after surgery ), the ticagrelor group(patients receiving 100mg/qd aspirin plus 90mg/bid ticagrelor after surgery).Patients in the two groups underwent plate-let aggregation rate test first day before surgery and the 1, 4, 7 days antiplatelet therapy after surgery.And the major adverse cardiac events(MACE) was investigated 30 days after surgery in the two groups.Results A total of 244 patients were recrui-ted in the study with the clopidogrel group(n=122) and the ticagrelor group(n=122).The platelet aggregation rate after one day of postoperative DAPT in the ticagrelor group was lower than that in the clopidogrel group[(28.5 ±9.7)% VS(51.8 ± 16.8)%, P<0.05].After 4 days of postoperative DAPT, platelet aggregation rate in the ticagrelor group maintained a stable and desired level.The MACE 30 days after surgery in the clopidogrel group and the ticagrelor group were 3.3% and 1.6% re-spectively, and ticagrelor plus aspirin reduced MACE in patients undergone coronary endarterectomy , P=0.043.Conclusion According to the results of CYP2C19 gene assay, ticagrelor replacing clopidogrel could shorten the duration of desired platelet aggregation rate in patients with DAPT after OPCABG , and may be reduce the risk of MACE after OPCABG and coronary end-arterectomy.

Article in Chinese | WPRIM | ID: wpr-746171


Objective To investigate the incidence and risk factors of acute kidney injury(AKI) requiring continuous renal replacement treatment(CRRT) in patients with acute type A aortic dissection after Sun's operation.Methods A retrospective analysis of consecutive patients with acute type A aortic dissection underwent Sun's operation in Beijing Anzhen Hospital,Capital Medical University from January 2009 to December 2015.These patients were divided into two groups according to whether had severe postoperative AKI requiring CRRT treatment:the dialysis group(AG,65 cases) and the control group(CG,618 cases),we compared the clinical outcomes of patients in two groups and analyzed the related risk factors.Results 50 patients(7.3%) died in hospital.Compared with patients in CG group,patients in AG group had higher age,more patients with preoperative coronary heart disease,pericardial tamponade,and higher rates of intraoperative coronary artery hypass surgery or valve surgery,the results were statistically different between the two groups(P <0.05).The patients in AG group had a higher mortality rate in hospital(26.2% vs.5.3%),and the difference was statistically significant(P <0.001).The results of multiple regression analysis suggested that the age > 50 years,preoperative history of pericardial tamponade,intraoperative need for combined coronary artery bypass grafting or valve surgery,and cerebral perfusion time >40 min were independent risk factors for CRRT treatment of postoperative severe AKI(P <0.05).Conclusion The incidence of severe AKI requiring CRRT treatment in patients with acute type A aortic dissection after Sun's operation was 9.5%,and the discharge survival rate in AG group was lower than that in CG group.An important way to reduce the incidence of severe AKI requiring CRRT after sun's surgery is to shorten the intraoperative cerebral perfusion time as much as possible.