Thoracic electrical bioimpedance versus suprasternal Doppler in emergency care

Abstract

Background: There are a number of cardiac output monitors that could potentially be used in the emergency department. Two of the most promising methods (bioimpedance and suprasternal Doppler) have not been directly compared.

Effects of Volume Overload and Current Techniques for the Assessment of Fluid Status in Patients with Renal Disease

“…Although monitoring cardiac output via suprasternal Doppler was feasible, Elwan et al [155] showed that cardiac output was underestimated as shown before by Chong et al [157]. Elwan et al [155] also compared suprasternal Doppler technique to the bioimpedance method.…”

“…Although monitoring cardiac output via suprasternal Doppler was feasible, Elwan et al [155] showed that cardiac output was underestimated as shown before by Chong et al [157]. Elwan et al [155] also compared suprasternal Doppler technique to the bioimpedance method. Although the bioimpedance method gave better results, they emphasized that lower readings in suprasternal Doppler might have resulted from operator dependence [155].…”

“…Suprasternal Doppler monitorizing ascending or descending aorta has been used since the 1960s [155,156]. Although monitoring cardiac output via suprasternal Doppler was feasible, Elwan et al [155] showed that cardiac output was underestimated as shown before by Chong et al [157].…”

“…Elwan et al [155] also compared suprasternal Doppler technique to the bioimpedance method. Although the bioimpedance method gave better results, they emphasized that lower readings in suprasternal Doppler might have resulted from operator dependence [155]. Therefore, there is a need for further studies to establish reference standards for Suprasternal Doppler monitorization.…”

Suprasternal Doppler as a haemodynamic tool in emergency care

“…Dear Editor, I read with great interest the study by Elwan et al 1 comparing two cardiac output (CO) non-invasive monitors in emergency care (EC). First, I want to congratulate the authors for their work, but I would like to share some ideas for discussion.…”