Effect of direct percutaneous transluminal coronary angioplasty combined with stent implantation on N-terminal pro-B type natriuretic peptide and QT dispersion in patients with acute myocardial infarction
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摘要:目的 探讨直接经皮冠状动脉腔内成形术(PTCA)联合支架置入术对急性心肌梗死(AMI)患者N末端脑钠肽前体(NT-proBNP)及QT间期离散度(QTd)的影响。方法 将100例AMI患者采取分层抽样法分为观察组(直接PTCA联合支架置入术治疗)和对照组(重组人组织型纤溶酶原激活物治疗),每组50例。比较2组NT-proBNP、QTd、1年内心绞痛发生率、再发心肌梗死率、病死率、左室舒张末期内径(LVEDd)、左室射血分数(LVEF)、左室收缩末期内径(LVESd)及并发症发生情况。结果 治疗后,观察组的NT-proBNP、QTd低于对照组,差异有统计学意义(P < 0.05)。观察组1年内心绞痛发生率、再发心肌梗死率低于对照组,差异有统计学意义(P < 0.05)。治疗后,观察组LVEDd、LVESd低于对照组, LVEF高于对照组,差异有统计学意义(P < 0.05)。观察组并发症总发生率为4.00%, 低于对照组的18.00%, 差异有统计学意义(P < 0.05)。结论 直接PTCA联合支架置入术治疗AMI患者效果显著,可降低NT-proBNP水平、QTd数值及并发症发生率。Abstract:Objective To investigate the effect of direct percutaneous transluminal coronary angioplasty (PTCA) combined with stent implantation on N-terminal pro-B type natriuretic peptide (NT-proBNP) and QT dispersion (QTd) in patients with acute myocardial infarction (AMI).Methods A total of 100 AMI patients were divided into observation group (treated by direct PTCA and stent implantation) and control group (treated by recombinant human tissue plasminogen activator) according to stratified sampling method, with 50 cases in each group. NT-proBNP, QTd, 1-year incidence of angina pectoris, recurrent myocardial infarction rate, mortality, left ventricular end diastolic diameter (LVEDd), left ventricular ejection fraction (LVEF), left ventricular end systolic diameter (LVESd) and incidence of complications were compared between the two groups.Results After treatment, NT-proBNP and QTd in the observation group were significantly lower than those in the control group (P < 0.05). The 1-year incidence of angina pectoris and recurrent myocardial infarction rate in the observation group were significantly lower than those in the control group (P < 0.05). After treatment, LVEDd and LVESd in the observation group were significantly lower than those in the control group, while LVEF was significantly higher than that in the control group (P < 0.05). The total incidence of complications in the observation group was 4.00%, which was significantly lower than 18.00% in the control group (P < 0.05).Conclusion Direct PTCA combined with stent implantation shows a significant effect in the treatment of patients with AMI, which can reduce the NT-proBNP, QTd and incidence of complications.
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表 1 2组患者一般资料比较(x±s)[n(%)]
组别 性别 年龄/岁 病程/年 体质量指数/(kg/m2) 男 女 观察组(n=50) 26(52.00) 24(48.00) 58.65±4.23 4.25±1.06 23.02±2.05 对照组(n=50) 23(46.00) 27(54.00) 58.70±4.19 4.32±1.02 23.07±2.07 表 2 2组NT-proBNP、QTd比较(x±s)
指标 组别 n 治疗前 治疗后48 h N末端脑钠肽前体/(pg/L) 观察组 50 562.36±75.32 232.52±30.25*# 对照组 50 562.46±75.27 345.65±52.32* QT间期离散度/ms 观察组 50 68.52±13.52 40.25±5.65*# 对照组 50 68.55±13.48 56.25±7.02* 与治疗前比较, *P < 0.05; 与对照组比较, #P < 0.05。 表 3 2组1年内心绞痛发生率、再发心肌梗死率、病死率比较[n(%)]
组别 n 心绞痛 再发心肌梗死 死亡 观察组 50 8(16.00)* 1(2.00)* 0 对照组 50 25(50.00) 9(18.00) 1(2.00) 与对照组比较, *P < 0.05。 表 4 2组心功能指标比较(x±s)
指标 组别 n 治疗前 治疗后48 h 左室舒张末期内径/mm 观察组 50 57.45±8.65 49.21±4.25*# 对照组 50 57.50±8.61 53.25±6.32* 左室射血分数/% 观察组 50 38.52±3.52 43.72±5.65*# 对照组 50 38.59±3.47 40.25±4.32* 左室收缩末期内径/mm 观察组 50 46.85±7.32 40.25±3.65*# 对照组 50 46.90±7.28 43.52±5.21* 与治疗前比较, *P < 0.05; 与对照组比较, #P < 0.05。 表 5 2组并发症发生情况比较[(n)%]
组别 n 室颤 房颤 突发脑出血 急性再梗死 合计 观察组 50 2(4.00) 0 0 0 2(4.00)* 对照组 50 0 1(2.00) 2(4.00) 6(12.00) 9(18.00) 与对照组比较, *P < 0.05。 -
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