| 高血压病并发阵发性心房颤动患者左心房电生理特点 |
| 投稿时间：2009-08-08 修订日期：2009-10-14 点此下载全文 |
| 引用本文：时培苗、杨新春、顼志敏.高血压病并发阵发性心房颤动患者左心房电生理特点[J].医学研究杂志,2010,39(1):83-85 |
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| 中文摘要:目的探讨高血压病患者和高血压病并发阵发性心房颤动患者左心房电生理特性变化。方法应用二维超声心动图及多普勒、多普勒组织成像（DTI）技术，测定和计算30例正常人、25例高血压病病程≤10年患者、24例高血压病病程＞10年患者、28例高血压病并发阵发性心房颤动患者的左心房电生理指标：电-机械时间（P-A）和电-机械时间离散度（P-Ad）、左、右心房电传导整体差异(DQAT)、体表心电图P波最大时限（Pmax）和P波离散度（Pd）。 结果高血压病并发阵发性心房颤动组三尖瓣环电机械时间（P-A3）较正常对照组、高血压病病程≤10年组、高血压病病程＞10年组明显延长（P<0.01、P<005、P<0.05），高血压病并发阵发性心房颤动组室间隔三尖瓣环电机械时间离散度（P-Ad2）较正常对照组、高血压病病程≤10年组、高血压病病程＞10年组绝对值明显延长（P<0.05、P<0.05、P<0.05）。结论①高血压病并发阵发性心房颤动患者心房电机械时间和电机械时间离散度延长;②某些反映左心房电生理特性的心脏超声指标如P-A3、P-Ad2可以用于预测高血压病患者并发阵发性心房颤动的发生。 |
| 中文关键词:高血压病、阵发性心房颤动、多普勒组织成像、电生理学 |
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| The Electromechanical Characteristics of Left Atrial Patients with Hypertension Complicated with Paroxysmal Atrial Fibrillation |
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| Abstract:tObjectiveTo investigate the alteration of left atrial(LA) electromechanical characteristics of patients with hypertensivon and patients with hypertension complicated with paroxysmal atrial fibrillation(PAF). MethodsBy use of two-dimentional echocardiography and Doppler and tissue Doppler imaging(TDI) techniques, we mensurated and calculated the indexes representing LA structure and systolic and diastolic function and electromechanical characteristics in 30 nornal subjects（group1）, 25 patients with hypertension lasting less than ten years（group2）, 24 patients with hypertension lasting more than ten years（group3） and patients with hypertension complicated PAF（group4）. Indexes representing LA electromechanical characteristics consisted of the difference in time intervals between the QRS onset and the tricuspid A wave, and the QRS onset and the mitral A wave (DQAT), electromechanical time (P-A), electromechanical time dispersion(P-Ad), the maximum P wave duration, the minimum P wave duration, and P wave dispersion (Pd=Pmax-Pmin) calculated from 12-lead surface electrocardiograms. ResultsThe P-A3 in group 4 was much longer than that in group 1, group 2 and group 3. The P-Ad2 in group 4 was much longer than that in group 1, group 2 and group 3.ConclusionThere are prolonged P-A3 and P-Ad2 in patients with hypertension complicated PAF . Some indexes, such as P-A3 and P-Ad2, perhaps can predict the onset of PAF in patients with essential hypertension better. |
| keywords:Hypertension Paroxysmal atrial fibrillation Tissue Doppler imaging Electrophysiology |
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