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目的 :研究超声心动图与心电图诊断左心室肥大的临床价值。方法 :选择我院接受诊治的患者468例,分别进行心电图、超声心动图诊断。将左心室肥大患者依据心电图的Pvl终末电势值的大小分为A组(Pvl终末电势>-0.04mm·s)与B组(Pvl终末电势≤-0.04mm·s)。观察两组左室短轴收缩末前后径、短轴横径,左室舒张末短轴舒张末前后径、短轴横径,左室心尖四腔长径等左室结构,E波减速时间、左室等容舒张时间等舒张功能参数。结果 :A组收缩末左室短轴前后径、短轴横径、心尖四腔长径均小于B组。A组舒张末左室短轴前后径、心尖四腔长径均小于B组。A组E波减速时间较B组显著延长。A组左室等容舒张时间较B组显著缩短。结论 :在LVH的诊断上,超声心动图较常规心电图更有优势。以Pvl终末电势≤-0.04mm·s为Pvl终末电势的正常值诊断LVH,能够获得和超声心动图较为一致诊断效果。
Objective: To study the clinical value of echocardiography and electrocardiogram in diagnosis of left ventricular hypertrophy. Methods: A total of 468 patients were selected for diagnosis and treatment in our hospital and diagnosed by electrocardiogram and echocardiography respectively. Patients with left ventricular hypertrophy were divided into group A (Pvl terminal potential> -0.04 mm · s) and group B (Pvl terminal potential ≤-0.04 mm · s) according to the magnitude of the terminal potential of Pvl in the electrocardiogram. Left ventricular short axis systolic anteroposterior diameter, short axis diastole, left ventricular end diastolic anteroposterior diameter, short axis diastole, left ventricular apex four-chamber long axis and other left ventricular structure were observed, E wave deceleration time, Left ventricular isovolumic relaxation time and other diastolic function parameters. Results: In group A, left ventricular short axis anteroposterior diameter, short axis transverse diameter and apical four-chamber long diameter were all less than those in group B. A group of left ventricular end-diastolic anteroposterior diameter, apical four-chamber long diameter were smaller than the B group. A group E wave deceleration time significantly longer than the B group. A group of left ventricular isovolumic relaxation time was significantly shorter than the B group. Conclusion: Echocardiography has more advantages than conventional electrocardiogram in the diagnosis of LVH. To Pvl terminal potential ≤ -0.04mm · s for the normal end potential of Pvl LVH diagnosis, and echocardiography can be more consistent diagnostic results.