超声心动图观察呼吸对室间隔运动的影响

Influence of respiration on interventricular septal motion observed with echocardiography

目的 应用二维超声心动图法观察室间隔运动受呼吸影响情况 ,进一步验证笔者新近提出的关于呼吸影响心功能的假说 ,为该假说的临床应用提供理论依据。方法 用超声心动图观察 2 0例正常人及 11例心包积液伴有或不伴有心包填塞患者的室间隔随呼吸运动的情况。结果 正常人平静呼吸时 ,室间隔运动轻微 ,较深呼吸时明显 ,吸气时室间隔向左室方向移动 ,呼气时恢复。心包填塞患者的室间隔随呼吸左右摆动的幅度明显增大 ,以致左右室短径及相应的左右心功能呈交替、反时相的周期性变化。结论 研究结果进一步证明 ,呼吸性胸压变化是室间隔呼吸性左右摆动的原动力 ,是呼吸性血流动力学指标周期性改变、舒张期左右心室相互作用的力学基础 。

Objective To observe influence of respiration on interventricular septal (IVS) motion observed with echocardiography and further prove our recently proposed hypothesis and to provide theoretical basis for its clinical application. Methods The respiration related IVS motion in 20 normal subjects and in 11 patients of pericardial effusion with or without cardiac tamponade was observed using echocardiographic technique. Results The IVS motion was mild in normal subjects with quiet breathing and marked ...