Comparison of electrical velocimetry and transoesophageal Doppler echocardiography for measuring stroke volume and cardiac outputy
نویسندگان
چکیده
Background. Impedance cardiography (ICG) has been used extensively to estimate stroke volume (SV) and cardiac output (CO) from changes of thoracic electrical bioimpedance (TEB). However, studies comparing ICG with reference methods have questioned the reliability of this approach. Electrical velocimetry (EV) provides a new algorithm to calculate CO from variations in TEB. As the transoesophageal Doppler echocardiographic quantification of CO (TOE–CO) has emerged as a reliable method, the purpose of this study was to determine the limits of agreement between CO estimations using EV (EV–CO) and TOE–CO.
منابع مشابه
Comparison of electrical velocimetry and transoesophageal Doppler echocardiography for measuring stroke volume and cardiac output.
BACKGROUND Impedance cardiography (ICG) has been used extensively to estimate stroke volume (SV) and cardiac output (CO) from changes of thoracic electrical bioimpedance (TEB). However, studies comparing ICG with reference methods have questioned the reliability of this approach. Electrical velocimetry (EV) provides a new algorithm to calculate CO from variations in TEB. As the transoesophageal...
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