ST段抬高型心肌梗死合并应激性高血糖患者围手术期应用胰高血糖素样肽-1与胰岛素对心肌灌注及预后的影响

摘要

Objective: To explore the peri-operative application of GLP-1 analogue and insulin on myocardial perfusion and clinical prognosis in patients of acute ST segment elevation myocardial infarction (STEMI) with stress-induced hyperglycemia. Methods: Our research was a prospective single center randomized control study. A total of 114 consecutive STEMI patients received percutaneous coronary intervention (PCI) within 12h of onset were enrolled, the patients had no diabetes while blood glucose ≥11.1mmol/L at immediate admission. Based on random number table, the patients were divided into 2 groups: Observation group, the patients received GLP-1 analogue, n=59 and Control group, the patients received insulin, n=55. The post-operative myocardial perfusion, indicators of myocardial damage and cardiac function, myocardial infarct area (MIA) and myocardial salvage index (MSI) were compared between 2 groups. The patients were followed-up for 6 months to record the incidence of major adverse cardiovascular events (MACE). Results: At peri-operative period, compared with Control group, Observation group had decreased peak values of creatine kinase isoenzyme (CK-MB) and troponin T (cTnT), P<0.05. At 6 months post-operation, compared with Control group, Observation group showed increased myocardial perfusion and left ventricular ejection fraction (LVEF), P<0.05, reduced MIA (15±12) g vs (20±14) g, P<0.05 and 12% elevated MSI as (0.64±0.13) vs (0.56±0.12), P<0.001. The MACE incidence was similar between 2 groups, P=0.217. Conclusion: In STEMI patients with stress-induced hyperglycemia, peri-operative application of GLP-1 analogue may safely regulate blood glucose, improve cardiac perfusion and function, reduce MIA; while it had no influence on myocardial perfusion at peri-operative period and no impact on MACE occurrence at 6 months post-operation.%目的:探讨在围手术期应用胰高血糖素样肽(GLP)-1与胰岛素对ST段抬高型心肌梗死(STEMI)合并应激性高血糖患者进行干预,比较两种干预方法对患者心肌灌注及预后的影响.方法:本研究为前瞻性、单中心、随机对照研究,连续入选首次发生STEMI并于12 h内接受急诊经皮冠状动脉介入治疗且入院即刻血糖≥11.1 mmol/L的非糖尿病患者114例,利用随机数字表分为观察组(GLP-1干预,59例)和对照组(胰岛素干预,55例).对比两组术后心肌灌注、心肌损伤指标、心功能指标及心肌梗死面积(MIA)、心肌挽救指数(MSI),随访6个月,记录两组心血管不良事件(MACE)情况.结果:观察组围手术期肌酸激酶同工酶及心肌肌钙蛋白T的峰值较对照组降低(P<0.05);术后6个月,观察组心肌灌注、左心室射血分数均高于对照组(P<0.05),同时观察组较对照组患者MIA减少[(15±12)g vs(20±14)g,P<0.05],MSI增加12%(0.64±0.13 vs 0.56±0.12,P<0.001),但MACE发生差异无统计学意义(P=0.217).结论:STEMI患者合并应激性高血糖,围手术期应用GLP-1可以在安全调节血糖的同时,逐步改善心肌灌注及心脏功能,减少MIA,但未发现其对围手术期的心肌灌注及6个月MACE发生产生影响.