IVC Ultrasound Versus Central Venous Pressure for Early Detection of Hypovolemia in Shock Patients

This intervention involves bedside ultrasound measurement of the inferior vena cava (IVC) diameter and calculation of the IVC collapsibility/distensibility index. Assessments will be performed both at initial presentation and after fluid resuscitation in shock patients. The procedure is non-invasive, rapid, and performed according to standardized emergency ultrasound protocols, distinguishing it from invasive monitoring methods.