الفهرس 
Hemodynamic Monitoring and Correlation between Electrical Cardiometry and Esophageal Doppler in Patients Undergoing Major Abdominal Surgery
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Abstract
Objectives: The aim of this study is to correlate hemodynamic monitoring between noninvasive Electrical Cardiometry (EC) and minimally invasive Esophageal Doppler(ED) in patients undergoing major abdominal surgery. Patients and Methods: The research was conducted on thirty five adult patients, ASA II or III, undergoing major abdominal surgery. Patients were allocated into one group, with Esophageal Doppler and Electrical Cardiometry attached on the same patient. parameters measured were hemodynamic parameters (blood pressure, heart rate, cardiac output, cardiac index.Stroke volume, stroke volume index, systemic vascular resistance and oxygen delivery index). Results: Comparison of cardiac output (CO) with ICON and ED.The ICON mean value range from 5.6 to 6.2 l/min and ED mean value range from 5.7 to 7.6 l/min with non-significant difference between the two methods in all times.The precision for the ICON was measured to be ranged from 15.19 to 17.99% and the precision for ED was ranged from 13.39 to 17.08%. A 15% change of ED values were examined and the sensitivity and specificity of these values to detect an acute change in ICON was calculated and showed that it was highly sensitive 72.6% but low specific 30.9% for acute changes in CO with AUC 0.505. Conclusion: The agreement between CO measured by EC and ED is acceptable. Both were able to monitor trend changes and guide fluid administration in the operation theatre. The EC is as accurate as ED in measuring hemodynamics during major abdominal surgery