Assessment of Stroke Volume in Shock Using Echocardiography Versus Bioreactive Impedance

Summary

This study aims to evaluate the correlation between stroke volume measurements obtained by transthoracic echocardiography and bioreactance-based noninvasive cardiac output monitoring. The primary objective is to assess the level of agreement between these two modalities in critically ill patients.

Eligibility

Inclusion Criteria

* Age ≥ 18 years
* Clinical diagnosis of shock as determined by the treating ICU physician (e.g., hypotension requiring vasopressors or evidence of end-organ hypoperfusion)
* Able to obtain informed consent from the patient or a legally authorized representative
* Enrollment within 24 hours of ICU admission

Exclusion Criteria:

* Pregnancy
* Known severe aortic valve disease or dynamic left ventricular outflow tract obstruction
* Morbid obesity (BMI \> 40) that precludes accurate echocardiographic imaging Presence of cardiac arrhythmias (e.g., atrial fibrillation with rapid ventricular response) affecting stroke volume measurements
* Implanted cardiac assist devices (e.g., LVAD, pacemaker dependency)
* Imminent death or decision for comfort care only

Conditions3

Locations1 site

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