Assessment of Stroke Volume in Shock Using Echocardiography Versus Bioreactive Impedance
University of Nevada, Las Vegas
30 participants
Oct 19, 2024
OBSERVATIONAL
Conditions
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 Criteria4
- 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 Criteria5
- 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
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Interventions
Bioreactance-based noninvasive cardiac output monitoring device used to measure stroke volume before and after passive leg raising. Used solely for observational measurement. No therapeutic intervention is performed.
Locations(1)
View Full Details on ClinicalTrials.gov
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NCT07020637