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find Author "张洪宇" 6 results
  • Myocardial Protection of HTK Solution in Immature Rabbit Myocardium at Different Cardiac Arrest Time

    ObjectiveTo compare the myocardial protective effect of HTK solution and St.ThomasⅡ(STH) solution in immature rabbit myocardium at different cardiac arrest time. MethodsAccording to cardioplegia and cardiac arrest time, 32 immature New Zealand white rabbits (aged 2-3 weeks) were randomly divided into four groups. A group SO (8 rabbits) underwent 1 hour cardiac arrest with STH solution, a group ST (8 rabbits) underwent 2 hours cardiac arrest with STH solution, a group HO (8 rabbits) underwent 1 hour cardiac arrest with HTK solution, a group Ht (8 rabbits) underwent 2 hours cardiac arrest with HTK solution. Compare the myocardial protective effect of HTK and STH solution in immature myocardium at different cardiac arrest time. ResultsThe Langendorff models were successfully established in 30 cases (8 cases in the group SO and HO, 7 cases in the group ST and HT). There were no statistical differences in hemodynamics and myocardial enzyme (CK-MB, LDH) (P > 0.05), but HTK solution reduced the activity of nitric oxide synthase (NOS) and content of malonaldehyde (MDA) and NO, maintained high activity of superoxide dismutase (SOD) and Ca2+-ATPase (P < 0.05), performed more effective myocardial protection for immature myocardium. ConclusionHTK solution has more effective myocardial protection for immature myocardium than STH solution does, but STH solution still has good outcomes within short cardiac arrest time (1h).

    Release date:2016-10-02 04:56 Export PDF Favorites Scan
  • Experimental Research on Sheep Mitral Valves Replacement with Stentedpulmonary Autograft

    Objective To investigate the feasibility and effect of stentedpulmonary autograft replacement and find out the best way to treat mitral valve diseases. Methods From August 2006 to October 2007, 20 male sheep at the age of about 1 year old underwent mitral valves replacement operation in Anzhen Hospital. Weight of these sheep was 50.0±6.0 kg. They were randomly divided into two groups. Ten sheep in the experimental group underwent RossⅡsurgery in which we first sutured pulmonary valve onto a pulmonary valve stent, transferred the valve to the mitral valve annulus and then reestablished the outflow tract of the right ventricle. The other 10 sheep in the control group underwent bioprosthetic valve replacement routinely. Ultrasonic cardiogram (UCG) was employed 6 hour after operation to measure the effective orifice area (EOA) of the mitral valve, mitral peak velocity of early filling, the peak pressure gradient (PPG), the extent of regurgitation, left ventricular enddiastolic dimension (LVEDD) and ejection fraction (EF). Results One sheep in the experimental group died of low cardiac output syndrome; one in the control group died of unmanageable bleeding during operation, and the others all survived. Six hours after operation, UCG of the experimental group showed that the heart valves were well fixed, valve echo was clear, and there was no perivalvular leakage or mitral valve stricture or regurgitation, but moderate pulmonary valve regurgitation occurred in 1 case and mild in 2. There was no significant difference between the two groups in PPG (11.86±1.28 mm Hg vs. 10.98±0.98 mm Hg,t= 1.670,P=0.110) and the mitral peak velocity of early filling (1.72±0.09 m/s vs. 1.65±0.07 m/s, t=1.680,P=0.110). However, EOA of the experimental group was smaller than the control group (2.23±0.09 cm2 vs. 2.39±0.08 cm2, t= 4.240,P= 0.001). Conclusion The experimental result of sheep mitral valves replacement with stentedpulmonary autograft is satisfying. The new mitral valves work well and the surgery method is feasible.

    Release date:2016-08-30 06:02 Export PDF Favorites Scan
  • 右腋下小切口体外循环心内直视手术270例

    目的 总结右腋下小切口在常见先天性心脏病手术中的应用经验。 方法 回顾性分析济宁医学院附属医院2009年10月至2011年6月采用右腋下小切口经第4肋间进胸,在体外循环下施行心内畸形矫治手术270例患者的临床资料,其中男132例,女138例;年龄3个月~9岁 (3.0±1.6) 岁,行室间隔缺损(VSD)修补术132例,房间隔缺损(ASD)修补术50例,ASD修补术+部分型肺静脉异位引流(PAPVC)矫治术12例,部分型房室管畸形(PECD)矫治术15例,VSD+ASD修补术26例,法洛四联症根治术35例。 结果 全组无手术死亡,无二次开胸止血,平均住院时间9 d,平均住ICU 1.6 d。发生右肺不张3例,右侧气胸2例,阵发性室上性心动过速1例,Ⅱ°房室传导阻滞1例。术后全部患者均获得随访,随访时间1~16个月,随访期间3例VSD术后发生小于2 mm的残余漏,其余患者恢复良好。 结论 对具有该术式适应证的患者经右腋下小切口行心内直视手术,有安全可靠、创伤小、美观等优点。

    Release date:2016-08-30 05:50 Export PDF Favorites Scan
  • Clinical Outcomes of Cabrol Procedure for the Treatment of Stanford Type A Aortic Dissection

    ObjectiveTo analyze the clinical outcomes of Cabrol procedure for the treatment of Stanford type A aortic dissection. MethodsClinical data of 37 patients with Stanford type A aortic dissection underwent Cabrol procedure at the Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute from January 2009 to April 2014 were retrospectively analyzed. There were 34 males and 3 females aged at 21 to 66 years. The average interval time from onset to getting operation was 15.2±28.5 days. All patients received Cabrol procedure was performed for aortic root. According to different aortic arch conditions, hemiarch replacement or total arch replacement combined endovascular aortic repair with stent were performed. ResultsAll the operations were successfully performed including isolated Cabrol procedure in 4 patients, right hemiarch replacement in 10 patients and total arch replacement combined endovascular aortic repair with stent in 23 patients. One patient (2.7%) underwent reexploration for postoperative bleeding. Postoperative mortality was 10.8% (4/37). Follow-up duration was 1-24 months, 2 patients died during follow-up. ConclusionCabrol procedure has satisfactory clinical outcomes for Stanford type A AD and long-term patency of aortic without coronary oppression.

    Release date:2016-10-02 04:56 Export PDF Favorites Scan
  • 小儿主动脉缩窄或主动脉离断合并心内畸形的诊断与外科治疗

    目的 探讨主动脉缩窄(CoA)或主动脉离断(IAA)合并心内畸形的诊断及手术方式选择。 方法 2003年1月至2010年3月济宁医学院附属医院手术治疗14例小儿CoA(9例)或IAA(5例)合并心内畸形 [包括室间隔缺损(VSD)、房间隔缺损(ASD)、房室隔缺损(APSD)等畸形,但不包括单纯合并动脉导管未闭(PDA)] 患者, 其中男10例,女4例;年龄0.7~12.0 (3.2±4.5)岁;体重5.5~25.5 (10.2±5.5) kg。分期手术3例,经胸骨正中切口径路一期手术矫治11例。 结果 手术死亡2例,其中1例为分期手术,二次手术行VSD修补术后死于急性左心衰竭;1例术前诊断为VSD+PDA合并重度肺动脉高压,术前未发现IAA,术后死于急性肾功能衰竭。随访12例,随访时间6~84 (32±22)个月,患者恢复良好。复查心脏超声心动图提示:胸主动脉轻度狭窄2例,继续随访观察。 结论 多层螺旋CT和核磁共振成像是目前诊断CoA和IAA的首选检查方法。经胸骨正中切口径路一期手术治疗CoA或IAA合并心内畸形婴幼儿,可获较好的显露及疗效。

    Release date:2016-08-30 05:50 Export PDF Favorites Scan
  • Pulmonary Atresia and Ventricular Septal Defect Repair with Pericardial Tube: A Single Center Retrospective Follow-up Study

    ObjectiveTo identify the pulmonary artery growth, restenosis and regurgitation of the valve after right ventricle outflow (RVOT) reconstruction with pericardial tube in patients with pulmonary atresia and ventricle septal defect (PA/VSD). MethodsWe retrospectively analyzed the clinical data of 41 patients with PA/VSD undergoing PA/VSD repair to reconstruct RVOT for radical or palliative repair in our hospital from November 2002 through September 2013. There were 25 males and 16 females with operation age of 4.00 months to 22.70 years (56.60±63.92 months). Late pulmonary artery growth, pulmonary artery, and tricuspid regurgitation of the patients were followed up. Pulmonary atresia and ventricular septal defect repair with pericardial tube were performed in the patients. ResultsThere were 5 (12.19%) early hospital deaths. Thirty-three patients were followed up for 4.00 months to 10.75 years (3.00±2.35 years). Three patients (7.31%) were lost during the follow-up.One patient was dead after stageⅡsurgery. There was no significant growth on the diameters of the tube and the pulmonary artery branches during the follow-up. There were 10 patients with severe stenosis in pericardial tube and 5 patients with moderate or severe stenosis in pulmonary artery branches. The echocardiography suggested the pulmonary artery and tricuspid regurgitation were more serious (P<0.05). No correlation was found between regurgitation quantity and follow-up time. ConclusionThe early postoperative results is satisfactory. However, there is no potential growth on the pericardial tube. So the patients should be followed up closely for restenosis.

    Release date:2016-10-19 09:15 Export PDF Favorites Scan
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