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目的:用动态心电图(DCG)研究70例急性心肌梗死(AMI)(A组)早期心率变异性(HRV)与室性心律失常(VAR)的关系及其临床意义。结果:高危室性早搏(PVS)(Lown分级≥Ⅲ级,A1组)的发生与年龄,性别无明显相关,与梗死部位有关,早期前壁梗死的HRV明显低于非常壁梗死的HRV(P<0.05)。AMI早期A1组SDNN、VLF、LF和TF低于低危PVS组(A2组)(P<0.05)。24h内死亡均发生在A1组。结论:在AMI极早期测定HRV,为采取药物干预改善AMI预后提供了理论依据。 相似文献
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目的观察急性脑卒中患者心律失常发生情况及进行心率变异性分析。方法对82例急性脑卒中患者及40例健康对照者进行24h全信息动态心电图检查,观察心律失常发生情况及进行心率变异性分析。结果急性脑卒中患者心律失常新发率较高、且可出现严重的室性心律失常,并与对照组相比SDNN、RMSSD、SDNNindex、SDANN、PNN50(%)差异均有非常显著性意义(P<0.01),急性脑卒中患者心率变异性的昼夜变化则SDNN、RMSSD差异无显著性意义(P>0.05),而SDNNindex、SDANN差异有非常显著性意义(P<0.05)。结论急性脑卒中患者交感神经兴奋性增加、迷走神经兴奋性降低,且昼夜变化规律性消失,心率变异性降低,警惕有猝死的可能。 相似文献
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目的:探讨自主神经系统活动在室性心律失常(VR)发生中的作用。方法:分析38例正常人(A组),46例无器质性心脏病VR(B组)及45例器质性心脏病VR(C组)的心率变异性(HRV)。结果:(1)与A组比较,B组SDNN,PNN50,RMSSD,HRVTI显降低(P<0.05-0.01),SDANN,SDNNindex无显差异(P>0.05);C组各项指标均显降低(P<0.01),(2)C组各项指标均比B组显降低(P<0.05-0.01)。提示:迷走神经张力降低在VR的发生中起重要作用,HRV减低可作为高危性VR的独立预测指标。 相似文献
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1 资料与方法选取 1 999年来收治的急性心肌梗死 (AMI) 4 8例 ,男 38例 ,女 1 0例 ,年龄 41~ 84(59 6± 1 2 3)岁。诊断按WHO诊断AMI的标准 ,全部病例均在发病后 1W内行 2 4h动态心电图 (DCG)检查 ,除外二度以上房室传导阻滞 ,病态窦房结综合征及心房颤动。对照组 39例 ,男 32例 ,女7例 ,年龄 44~ 78(58 2± 8 7)岁 ,排除心血管疾病、糖尿病及其它重要脏器疾病。2组病例的年龄无显著性差异 ,所有病例在行DCG检查期间均未服用 β受体阻滞剂等影响心率的药物。采用美国Rozin型 3通道DCG分析系统 ,总分析时间不少… 相似文献
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急性心肌梗死恢复期心率震荡和心率变异性的研究 总被引:2,自引:0,他引:2
目的通过对急性心肌梗死(AMI)恢复期患者心率震荡(HRT)和心率变异性(HRV)时域指标进行分析,探讨其变化机制和临床意义。方法随机选择AMI恢复期患者43例(A组)进行回顾性分析研究;原发性高血压患者35例(B组)和无器质性心脏病38例(C组)作为对照。所有病例均行24h动态心电图检测。结果A组震荡初始(TO)(0.38±1.62%)与B组(1.48±2.08%)、C组(2.40±2.62%)相比,A组明显升高,P<0.0001、0.002;A组SDNN、TI较其它两组明显降低,P<0.0001;PNN50、rMSSDA组与C组相比;A组下降明显,P<0.0001、0.01;与B组相比A组虽有所下降,但统计学无显著性差异,P>0.05。结论AMI恢复期的患者HRT现象明显变钝,甚至这种反应消失,说明HRT对预测心肌梗死患者的危险性具有重要的临床价值;HRV指标尤其是SDNN、TI显著降低,表明HRV下降与心肌梗死有关,HRT可以弥补HRV对预后评估的不准确性。 相似文献
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目的探讨冠心病与非冠心病室性心律失常患者心率变异性的差异。方法选自2011年1月至2013年10月于我院行24h动态心电图检查的患者560例。按照患者24h动态心电图室性心律失常的类型、数目、形态及有无冠心病分为5组:健康对照组143例;简单室早非冠心病组100例;简单室早冠心病组102例;复杂室早非冠心病组106例;复杂室早冠心病组109例;各组年龄构成比、男女比例无显著差异。所有患者均进行24h心率变异性检测,并对检测结果进行分析。结果比较这五组患者的24h心率变异性时域分析指标,非冠心病室早组心率变异性时域分析指标增高;冠心病室早组心率变异性时域分析指标降低。室早冠心病组与非冠心病组24h心率变异性时域分析指标有显著差异。结论 24h心率变异性时域分析对于室早的危险分层、科学处理、合理治疗有重要意义,心率变异性时域分析是一项在室早诊疗过程中有价值的辅助检查。 相似文献
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近年来,我们对80例急性心肌梗塞(AMI)患者进行了24小时动态心电图检测,并分析其心率变异性(HRV)与病死率的关系,现报告如下。 相似文献
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心率变异性降低的临床价值 总被引:3,自引:0,他引:3
目的了解心率变异性降低对住院患者病情评估和预后判断的临床价值。方法分析心率变异性正常37例(A 组)、中度降低47例(B 组)、重度降低43例(C 组)住院患者的动态心电图资料和临床诊断、病情及转归情况。结果三组患者心率变异性5项时域指标在A、B、C 组间逐渐降低(P <0.01);24 h 最快心率差异无统计学意义(P >0.05);24 h 最慢心率和平均心率在 A、B、C 组间逐渐升高(P <0.01)。临床资料显示三组患者中危重病例比例、在院死亡比例逐渐升高(P <0.01),A 组为5.4%和2.7%,B 组为17.0%和6.4%,C 组为60.5%和27.9%;心率变异性降低与危重病例和在院死亡均存在相关性,相关系数分别为0.492和0.307(P 均<0.01)。结论心率变异性检测稳定性和重复性好,心率变异性降低程度可以作为患者病情危重和预后不良的预测指标。 相似文献
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目的研究不同部位急性心肌梗死(AMI)患者的心律失常表现特征及其心率变异性。方法纳入2015年1月至2016年6月就诊于兰卅大学第一医院的AMI患者,根据心电图结果分为非ST段抬高型心肌梗死(NSTEMI)组、下壁组及前壁组。分析各组住院期间动态心电图(DEC)资料,对比心律失常发生情况及心率变异性指标。结果共纳入239例AMI患者。在NSTEMI组、下壁组及前壁组间,频发室性早搏、Lown≥3级室性早搏及房性心律失常的发生率差异无统计学意义(P0.05),但NSTEMI组和下壁组的缓慢性心律失常发生率高于前壁组,差异有统计学意义(P0.05)。前壁组全部窦性心搏RR间期的标准差(SDNN)、RR间期平均值的标准差(SDANN)、RR间期标准差的平均值(ASDNN)均显著低于NSTEMI组和下壁组,差异有统计学意义(P0.05)。结论与前壁心肌梗死相比,NSTEMI和下壁心肌梗死缓慢性心律失常发生率较高,但心率变异性损害程度较轻。 相似文献
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Effect of diurnal variability of heart rate on development of arrhythmia in patients with chronic obstructive pulmonary disease 总被引:4,自引:0,他引:4
Tükek T Yildiz P Atilgan D Tuzcu V Eren M Erk O Demirel S Akkaya V Dilmener M Korkut F 《International journal of cardiology》2003,88(2-3):199-206
We examined the possible effect of diurnal variability of heart rate on the development of arrhythmias in patients with chronic obstructive pulmonary disease (COPD). Forty-one COPD patients (M/F: 39/2, mean age: 59+/-8.5 years) and 32 (M/F: 27/5, mean age: 57+/-11 years) healthy controls were included. Twenty-four hour ECG recordings were analyzed for atrial fibrillation (AF) or ventricular premature beats (VPB), and circadian changes in heart rate variability (HRV) were assessed by dividing the 24-h period into day-time (08:00-24:00 h) and night-time (24:00-08:00 h) periods. Night-time total (TP), low frequency (LF) and high frequency (HF) powers were similarly lower from day-time parameters in AF(-) COPD patients (HF 3.91+/-1 vs. 4.43+/-1.04 ms(2), P=0.001) and controls (HF 3.95+/-0.72 vs. 4.82+/-0.66 ms(2), P<0.001). The LF/HF ratios were also significantly reduced in the same patient groups (AF(-) COPD 1.35+/-0.21 vs. 1.27+/-0.19, P=0.04, controls 1.43+/-0.14 vs. 1.24+/-0.09, P<0.001). Night-time TP and LF were increased, HF unchanged and LF/HF significantly increased (1.11+/-0.25 vs. 1.19+/-0.27, P<0.05) in AF(+) COPD patients. Frequency of VPB was correlated with corrected QT dispersion (QTc(d)) (r=0.52, P=0.001) and the day-time/night-time HF ratio (r=0.43, P=0.02). Patients with QTc(d)>or=60 ms did not have the expected increase in night-time HF and had a statistically insignificant increase in LF/HF ratio. In COPD patients with QTc(d)<60 ms, circadian changes in HRV parameters were parallel with the controls. We concluded that COPD patients with arrhythmia had circadian HRV disturbances such as unchanged night-time parasympathetic tone and disturbed sympatho-vagal balance in favor of the sympathetic system all day long, which may explain the increased frequency of arrhythmia. 相似文献
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目的对老年急性肺动脉栓塞患者临床特点及预后进行分析。方法回顾性分析确诊的73例住院患者。结果(1)老年患者(≥60岁)36例,平均年龄(71.6±6.8)岁;非老年患者(〈60岁)37例,平均年龄(44.8±9.9)岁。(2)老年组危险因素依次为下肢静脉血栓(DVT)、心脑血管病史、手术史、肿瘤、骨折;非老年组危险因素依次为DVT、手术史、心脑血管病史、骨折、肿瘤。心脑血管病史、肿瘤在老年组比非老年组高(17/36∶8/37)、(6/36∶1/37),差异有显著性(P〈0.05)。⑶老年组死亡率较高(11/36∶2/37),差异有显著性(P〈0.05)。结论老年肺动脉栓塞患者伴随疾病多,住院预后差。 相似文献
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原发性高血压患者心律失常检测及心率变异性分析 总被引:2,自引:0,他引:2
目的研究原发性高血压患者的心律、心率与心率变异性。方法采用24h动态心电图(Holter)评价331例门诊高血压患者的心律失常情况;并分析202例患者心率变异性(HRV)的时域和频域指标。结果331例患者均为窦性心律,心律失常检出率达93%。房性心律失常检出率(87%)远高于室性心律失常(50%),房性早搏≤100个/24h占全部房性早搏者的95%,室性早搏≤100个/24h者占全部室性早搏者的85%,10%的患者合并有短暂房性心动过速,室性心动过速发生率为0.9%,II度II型房室传导阻滞3%。各项时域参数值较正常参考值低,高频(HF)、低频(LF)成份亦低于正常参考值,而LF/HF则明显高于正常参考值。结论原发性高血压患者的心律失常具高发生率且广谱的特性,房性心律失常最为多见,HRV明显降低。 相似文献
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维持性血液透析患者心脏性猝死发生率高,而室性心律失常是其重要原因之一。研究表明:室性心律失常的发生与自主神经系统功能失衡有关,而心率变异性是公认的检测自主神经功能的无创性指标。近期研究多集中于室性心律失常,以及心率变异性在维持性血液透析过程中的变化及其影响因素,而探讨二者相关性的报道较少。因此开展这方面的研究、寻找早期预警室性心律失常发生的指标并适时调整血液透析治疗方案,对改善维持性血液透析患者的预后具有极其重要的临床意义。 相似文献
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Continuous Holter ECG monitoring is a valuable, easy to perform, non-invasive method of assessing not only cardiac arrhythmias but also heart rate variability and autonomic nervous system function. The aim of the study was to determine cardiac arrhythmias and HRV in patients with stable angina with and without previous myocardial infarction. 156 patients, 92 with and 64 without previous myocardial infarction, were examined. The control group consists of 50 healthy volunteers of the same age and sex. No pharmacological treatment except nitroglycerin was applied 2 days before and during examination, blood electrolytes were normal and 24-hour activity was the same in both examined groups. Heart rate variability was assessed by calculation of indices based on statistical operations on RR intervals (time-domain analysis). As a result of the study it was found out that in patients with stable angina pectoris cardiac arrhythmias occur more often and 24-hour heart rate variability is depressed as well as during daily activity and night resting than in healthy persons. In patients without previous myocardial infarction it was found out that 24-hour heart rate was slower than in patients with previous myocardial infarction, which depended mainly on slower heart rate during night, heart rate variability was not significantly different between these groups. 相似文献
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《Heart & lung : the journal of critical care》2020,49(6):749-752
ObjectiveThere have been no studies examining the effect of microalbuminuria on outcomes of patients with acute pulmonary embolism (APE). This study aimed to assess the association between microalbuminuria and in-hospital mortality in patients with APE.MethodsThis retrospective study included all adult patients hospitalized due to APE between June 2015 and May 2018. Blood and urine samples were collected before the diagnostic procedures on admission. Patients were divided into 3 groups according to urinary albumin to creatinine ratio (UACR) levels: normoalbuminuria (<30 mg/g), microalbuminuria (30–299 mg/g), and macroalbuminuria (> 300 mg/g). The primary endpoint of the study was in-hospital mortality.ResultsA total of 154 consecutive patients (mean age 69.8 ± 13.4 years, 51.9% female) were included, and 21 (13.6%) of the patients died during their in-hospital course. The prevalence of normoalbuminuria, microalbuminuria, macroalbuminuria was 70.1%, 23.4%, and 6.5%, respectively. Patients with in-hospital mortality had significantly lower estimated glomerular filtration rate (eGFR), but higher UACR at admission than those patients who survived. As compared with patients with normoalbuminuria, multivariate analyses showed that the patients with microalbuminuria and macroalbuminuria had 2.38-, and 3.48-fold higher risk for in-hospital mortality, respectively (p < 0.001). Multivariate analyses also showed that UACR >102.6 mg/g (OR: 1.76; 95% CI, 0.99–3.16; p = 0.011) was independently associated with in-hospital mortality, while a low eGFR was not associated.ConclusionMicroalbuminuria at admission may allow rapid prediction of prognosis in patients with APE. 相似文献
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目的探讨急性冠脉综合征(ACS)患者心率震荡(HRT)的变化及对患者预后的评价。方法选择2008年10月至2009年9月在天津市胸科医院住院的170例确诊为ACS患者(ACS组),同期50例正常者为对照组。所有入选者均在入院后行24 h动态心电图检查,分析和测量HRT的参数:震荡初始(TO)和震荡斜率(TS),并同时记录临床信息、左室射血分数(LVEF)。同时对ACS患者平均随访(20.5±12.2)个月,根据随访中是否发生心血管不良事件(MACE)将ACS患者分为MACE事件组和非MACE事件组。结果与对照组比较ACS组的TO显著增高(P<0.01),而TS则显著降低(P<0.01);MACE事件组与非MACE事件组比较TO显著增高(P<0.01),TS显著降低(P<0.01);Logistic回归分析显示TO、TS、LVEF对患者预后的预测作用最好。Pearson相关分析显示LVEF与TO呈负相关(r=-0.165,P=0.016),与TS呈正相关(r=0.172,P=0.012);HDL-C与TO呈负相关(r=-0.171,P=0.012),与TS呈正相关(r=0.235,P=0.001)。结论ACS患者的HRT明显减弱,迷走神经调节功能下降;HRT在评价患者预后中具有良好的临床参考价值。HRT与HDL-C的相关性不仅表明HRT能够反映HDL-C的水平,同时进一步证实HRT在评价患者预后中的价值。 相似文献
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卡维地洛对慢性心力衰竭患者室性心律失常和心率变异性影响 总被引:1,自引:0,他引:1
目的 探讨卡维地洛对慢性心力衰竭患者室性心律失常和心率变异性的影响。方法 97例慢性心力衰竭患者按随机分配原则,分为治疗组49例和对照组48例,治疗组在常规治疗的基础上加用卡维地洛,初始剂量2.5mg,每Et两次,每2周增加一次剂量,直至20mg一次或最大耐受量为止。用动态心电图分析治疗前后心率、室性心律失常和心率变异性变化,并用超声心动图测定患者治疗前后的心功能。结果 治疗组用卡维地洛治疗6个月后,心率下降、室性心律失常减少、心率变异性参数改善(P〈0.01);心功能改善亦非常显著(P〈0.01)。结论 卡维地洛治疗慢性心力衰竭患者,可降低室性心律失常的发生,改善心率变异性和心功能。 相似文献