【摘要】 目的探讨体位变化对陈旧性下壁心肌梗死心电图的影响。方法选择41例陈旧性下壁心肌梗死患者进行仰卧位、左侧卧位、右侧卧位、坐位及站位的心电图检查。测量Ⅱ、Ⅲ、a VF的Q波振幅和时间,ST段偏移幅值,T波振幅。结果左侧卧位ⅢQ波时间[46.50(35.75～54.00)]ms较仰卧位ⅢQ波时间[50.50(44.00～73.25)]ms变窄,左侧卧位ⅡT波振幅[0.09(0.00～0.12)]mV较仰卧位ⅡT振幅[0.09(0.00～0.14)]mV降低;右侧卧位ⅢQ波[0.40(0.32～0.51)]mV较仰卧位ⅢQ波[0.48(0.38～0.69)]mV变浅,右侧卧位ⅢT振幅[-0.05(-0.10～0.11)]mV较仰卧位ⅢT振幅[-0.07(-0.16～0.09)]mV增高;坐位ⅢQ波[0.57(0.42～0.90)]mV位较仰卧位ⅢQ波[0.48(0.38～0.69)]mV加深,差异均有统计学意义(均P<0.05)。结论体位变化对陈旧性下壁心肌梗死患者的心电图有一定影响。更多还原

【Abstract】 Objective To investigate the effect of different body positions on electrocardiogram in patients with old inferior myocardial infarction(OIMI). Methods Electrocardiogram was recorded in supine, left lateral, right lateral, sitting and standing positions in 41 patients with OIMI. Q-wave amplitude and duration, ST segment deviation and T-wave amplitude in lead Ⅱ, Ⅲ and aVF were measured. Results The duration of Q wave in lead Ⅲ was significantly shorter in left lateral position [46.50(35.7～54.00) ms] than in the supine position [50.50(44.00～73.25)ms](P<0.05).T-wave amplitude in lead Ⅱ was significantly shorter in left lateral position [0.09(0.00～0.12) mv] than in the supine position [0.09(0.00 ～0.14) mV](P<0.05). Q-wave amplitude was significantly lower and T wave amplitue was significantly higher in lead Ⅲ in right lateral position[0.40(0.32～0.51) mV,-0.05(-0.10～0.11) mV] than in supine position[0.48(0.38～0.69) mV,-0.07(-0. 16～0.09) mV](allP<0.05). Q-wave in lead Ⅲ was significantly deeper in sitting position [0.57(0.42～0.90) mV]than in the supine position[0.48(0.38 ～0.69) mV](P<0.05). Conclusion Different body positions may influence surface electrocardiogram in patients with OIMI.更多还原