Assessment of Stroke Volume in Shock Using Echocardiography Versus Bioreactive Impedance
Trial Parameters
Brief 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 Criteria
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