Evaluation of Fluid Resuscitation in Shocked Patients by Electrical Cardiometry in Comparison to Transthoracic Echocardiography.

Evaluation of Fluid Resuscitation in Shocked Patients by Electrical Cardiometry in Comparison to Transthoracic Echocardiography

The aim of this study is to evaluate the diagnostic accuracy of electrical cardiometry (EC) for the noninvasive determination of fluid responsiveness in critically ill shocked patients and agreement of EC compared to transthoracic echocardiography (TTE)

Electrical cardiometry (EC), based on thoracic electrical bioimpedance, can measure SV continuously and non-invasively. The EC"s working principle of estimation of SV is to utilize changes in thoracic electrical impedance, which is mainly influenced by erythrocyte orientation and peak flow velocity in the ascending aorta throughout the cardiac cycle.

Electrical cardiometry (EC) has been validated to monitor SV and other hemodynamic parameters non-invasively compared to different techniques such as thermodilution technique, transesophageal Doppler echocardiography and cardiac catheterization including critically ill patients, intra-operative settings, in pregnant women, in children with congenital heart diseases, even in obese children

Inclusion Criteria:

• Age from 25 to 65 years old.
• Both sexes.
• Patients with clinical criteria of shock [mean arterial pressure (MAP) ≤ 65 mmHg and tissue hypoperfusion (ScvO2 <70%, P(cv-a) CO2 ≥6 mmHg, CRT ≥4 s and lactate >2mmol/l).

Exclusion Criteria:

• Refusal to sign the consent by a first degree relative.
• Previous cardiac disease, rhythm other than sinus rhythm or heart rate > 140 beat/min.
• Renal failure (acute or chronic).