目的探讨1期支架置入和延期支架置入对高血栓负荷急性ST段抬高性心肌梗死(STEMI)患者QTc离散度、心肌灌注的影响。方法选取2019年9月至2021年2月保定市第二医院收治的80例高血栓负荷STEMI患者,根据随机数字表法分为1期组和延期组,各40...目的探讨1期支架置入和延期支架置入对高血栓负荷急性ST段抬高性心肌梗死(STEMI)患者QTc离散度、心肌灌注的影响。方法选取2019年9月至2021年2月保定市第二医院收治的80例高血栓负荷STEMI患者,根据随机数字表法分为1期组和延期组,各40例。两组均行经皮冠状动脉介入术(PCI),1期组术中采用1期支架置入,延期组术中采用延期支架置入。统计两组支架置入后2 h ST段回落指数、QTc离散度(QTcd)、校正QT间期(QTc)、冠状动脉血流情况、心肌灌注、血栓积分、血小板计数(PLT)、D-二聚体(D-D)、微小RNA-302b(miR-302b)、B型钠尿肽(BNP)、PCI情况,并随访主要心血管不良事件(MACE)。结果支架置入后2 h延期组QTcd(40.33±3.39)ms、QTc(42.30±5.51)ms低于1期组(55.15±4.06)ms、(58.82±5.17)ms,差值(27.68±5.15)、(28.03±4.89)高于1期组(11.84±4.48)、(12.63±3.95)(P<0.05),支架置入后2 h ST段回落指数高于1期组(P<0.05);支架置入后2 h延期组冠状动脉血流情况优于1期组(P<0.05);支架置入后2 h延期组血栓积分(2.41±0.16)分低于1期组(2.58±0.23)分,心肌灌注积分(2.65±0.11)分高于1期组(2.50±0.12)分,差值(0.81±0.04)分、(1.63±0.15)分大于1期组(0.58±0.05)分、(1.47±0.10)分(P<0.05);支架置入后2 h两组miR-302b、BNP水平低于支架置入前(P<0.05),支架置入后2 h延期组PLT(125.56±15.51)×10^(9)/L、D-D(0.40±0.08)mg/L水平低于1期组(182.33±17.65)×10^(9)/L、D-D(0.52±0.10)mg/L(P<0.05);延期组无复流/慢血流发生率17.50%低于1期组(40.00%,P<0.05);术后1个月随访,两组均无脱落病例。两组MACE发生率比较,差异无统计学意义(P>0.05)。结论延期支架置入有助于降低高血栓负荷STEMI患者QTcd,改善心肌灌注,抑制血栓形成,减少无复流/慢血流发生率。展开更多
Background: In pseudoexfoliative syndrome (PEX), extraocular accumulation is associated with cardiovascular morbidity and mortality. The aim of this study was to investigate the effect of exercise test on corrected QT...Background: In pseudoexfoliative syndrome (PEX), extraocular accumulation is associated with cardiovascular morbidity and mortality. The aim of this study was to investigate the effect of exercise test on corrected QT dispersion (QTcd) and QTcd recovery in PEX. Patients and Methods: A total of 37 patients diagnosed as PEX were included in the study. The control group consisted of 38 patients. The Electrocardiographies (ECG) were taken. The patients were subjected to an exercise test. Results: In the study group, baseline, peak and third minute recovery QTcd values were 41.35 ± 7.27 ms, 65.19 ± 7.83 ms, and 53.61 ± 6.45 ms, respectively. In the control group, baseline, peak and third minute recovery QTcd values were 29.92 ± 4.23 ms, 38.31 ± 4.22 ms and 28.76 ± 3.09 ms, respectively. There was statistically significant?difference between the baseline and peak QTcd values of the study group and?the control group (t = 8.34224/p 0.00001, t = 18.55079/p 0.00001, respectively). In addition, while there was a statistically significant?difference between the baseline QTcd and the third minute recovery QTcd in the study group, there was no statistically significant difference between the baseline QTcd value and the third minute recovery QTcd value in the control group as heart rate recovery (t = 8.388558/p 0.00001, t = 1.967315/p = 0.056668, respectively).?Conclusion: All of them were found to have a higher risk in terms of malignant ventricular arrhythmia in the study group, both at rest and with effort, in a statistically significant way compared to the control group.展开更多
Increases of QTc interval dispersion has been reported to be a marker for ischemia. The effects of coronary artery revascularization on QTc dispersion have not been previously reported. We studied QTc in 34 patients ...Increases of QTc interval dispersion has been reported to be a marker for ischemia. The effects of coronary artery revascularization on QTc dispersion have not been previously reported. We studied QTc in 34 patients with a mean age of 55 years (range 31～72) with coronary artery disease who underwent successful, uncomplicated coronary angioplasty (PTCA). We analysed 12 lead ECG 8 recorded 1 week before. 1 day and 1 week after the PTCA. QT intervals were measured by an observer who was blinded to the time the ECG was recorded, and to all other clinical information. QT intervals were corrected using Bazett's formula. QTc interval dispersion was calculated as the difference between the maximum and minimum of the 12 lead ECG QTc intervals. The QTc dispersion in a day (35±13)ms and a week (34±13)ms after PTCA was significant less reductive than the QTc dispersion (64±16)ms before PTCA (P<0 05). Successful revascularization by PTCA results in a significant reduction in QTc interval dispersion which persists over time. It may be a mechanism of benefit of PTCA therapy. Whether this measurement would predict restenosis in such patients requires further study.展开更多
文摘目的探讨1期支架置入和延期支架置入对高血栓负荷急性ST段抬高性心肌梗死(STEMI)患者QTc离散度、心肌灌注的影响。方法选取2019年9月至2021年2月保定市第二医院收治的80例高血栓负荷STEMI患者,根据随机数字表法分为1期组和延期组,各40例。两组均行经皮冠状动脉介入术(PCI),1期组术中采用1期支架置入,延期组术中采用延期支架置入。统计两组支架置入后2 h ST段回落指数、QTc离散度(QTcd)、校正QT间期(QTc)、冠状动脉血流情况、心肌灌注、血栓积分、血小板计数(PLT)、D-二聚体(D-D)、微小RNA-302b(miR-302b)、B型钠尿肽(BNP)、PCI情况,并随访主要心血管不良事件(MACE)。结果支架置入后2 h延期组QTcd(40.33±3.39)ms、QTc(42.30±5.51)ms低于1期组(55.15±4.06)ms、(58.82±5.17)ms,差值(27.68±5.15)、(28.03±4.89)高于1期组(11.84±4.48)、(12.63±3.95)(P<0.05),支架置入后2 h ST段回落指数高于1期组(P<0.05);支架置入后2 h延期组冠状动脉血流情况优于1期组(P<0.05);支架置入后2 h延期组血栓积分(2.41±0.16)分低于1期组(2.58±0.23)分,心肌灌注积分(2.65±0.11)分高于1期组(2.50±0.12)分,差值(0.81±0.04)分、(1.63±0.15)分大于1期组(0.58±0.05)分、(1.47±0.10)分(P<0.05);支架置入后2 h两组miR-302b、BNP水平低于支架置入前(P<0.05),支架置入后2 h延期组PLT(125.56±15.51)×10^(9)/L、D-D(0.40±0.08)mg/L水平低于1期组(182.33±17.65)×10^(9)/L、D-D(0.52±0.10)mg/L(P<0.05);延期组无复流/慢血流发生率17.50%低于1期组(40.00%,P<0.05);术后1个月随访,两组均无脱落病例。两组MACE发生率比较,差异无统计学意义(P>0.05)。结论延期支架置入有助于降低高血栓负荷STEMI患者QTcd,改善心肌灌注,抑制血栓形成,减少无复流/慢血流发生率。
文摘Background: In pseudoexfoliative syndrome (PEX), extraocular accumulation is associated with cardiovascular morbidity and mortality. The aim of this study was to investigate the effect of exercise test on corrected QT dispersion (QTcd) and QTcd recovery in PEX. Patients and Methods: A total of 37 patients diagnosed as PEX were included in the study. The control group consisted of 38 patients. The Electrocardiographies (ECG) were taken. The patients were subjected to an exercise test. Results: In the study group, baseline, peak and third minute recovery QTcd values were 41.35 ± 7.27 ms, 65.19 ± 7.83 ms, and 53.61 ± 6.45 ms, respectively. In the control group, baseline, peak and third minute recovery QTcd values were 29.92 ± 4.23 ms, 38.31 ± 4.22 ms and 28.76 ± 3.09 ms, respectively. There was statistically significant?difference between the baseline and peak QTcd values of the study group and?the control group (t = 8.34224/p 0.00001, t = 18.55079/p 0.00001, respectively). In addition, while there was a statistically significant?difference between the baseline QTcd and the third minute recovery QTcd in the study group, there was no statistically significant difference between the baseline QTcd value and the third minute recovery QTcd value in the control group as heart rate recovery (t = 8.388558/p 0.00001, t = 1.967315/p = 0.056668, respectively).?Conclusion: All of them were found to have a higher risk in terms of malignant ventricular arrhythmia in the study group, both at rest and with effort, in a statistically significant way compared to the control group.
文摘Increases of QTc interval dispersion has been reported to be a marker for ischemia. The effects of coronary artery revascularization on QTc dispersion have not been previously reported. We studied QTc in 34 patients with a mean age of 55 years (range 31～72) with coronary artery disease who underwent successful, uncomplicated coronary angioplasty (PTCA). We analysed 12 lead ECG 8 recorded 1 week before. 1 day and 1 week after the PTCA. QT intervals were measured by an observer who was blinded to the time the ECG was recorded, and to all other clinical information. QT intervals were corrected using Bazett's formula. QTc interval dispersion was calculated as the difference between the maximum and minimum of the 12 lead ECG QTc intervals. The QTc dispersion in a day (35±13)ms and a week (34±13)ms after PTCA was significant less reductive than the QTc dispersion (64±16)ms before PTCA (P<0 05). Successful revascularization by PTCA results in a significant reduction in QTc interval dispersion which persists over time. It may be a mechanism of benefit of PTCA therapy. Whether this measurement would predict restenosis in such patients requires further study.
