Correlation of esophageal conductance measurements with aortic and left ventricular diameters and stroke volume.
Correlation of esophageal conductance measurements with aortic and left ventricular diameters and stroke volume.
复制标题
食管电导测量与主动脉和左心室直径以及每搏输出量的相关性。
DOI：
10.1109/10.828157
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Warltier,DC
中科院分区：
文献类型：
--
作者：
Hettrick,DA;Battocletti,JH;Pagel,PS;Vurek,GG;Tessmer,JP;Kersten,JR;Warltier,DC
食管电导测量与血流动力学事件在9只狗长期仪器测量左心室（LV）和主动脉压，LV短轴和降主动脉直径，和主动脉血流量。将四电极电导导管定位在食管中。在血液稀释、肺灌洗和多巴酚丁胺输注麻醉期间检查内部和内部/外部配置。在每次介入时，腔静脉闭塞改变了LV每搏输出量。根据电极配置，在一定直径范围内，每搏传导与主动脉或LV直径和每搏输出量高度相关。食管电导测量直接受测量部位附近的局部血流动力学事件的影响。
Esophageal conductance measurements were correlated with hemodynamic events in 9 dogs chronically instrumented for measurement of left ventricular (LV) and aortic pressures, LV short axis and descending aortic diameters, and aortic blood flow. A four-electrode conductance catheter was positioned in the esophagus. Both an internal and an internal/external configuration were examined during anesthesia with hemodilution, pulmonary lavage and dobutamine infusion. LV stroke volume was altered by caval occlusion at each intervention. Stroke conductance was highly correlated to aortic or LV diameters and stroke volume over a range of diameters depending on the electrode configuration. Esophageal conductance measurements are directly influenced by local hemodynamic events adjacent to the site of measurement.