Background: Central venous pressure (CVP) measurement is fundamental in perioperative medicine and is often achieved invasively with a central venous catheter (CVC). CVP can be estimated non-invasively by clinical examination of the jugular venous pressure. Echocardiography has been used to estimate CVP, with particular emphasis on the superior vena cava (SVC) diameter and collapsibility with respiration. Aim: to evaluate the role of ultrasound measurements of SVC Diameter and collapsibility index in comparison to CVP measurements in guiding fluid therapy in patients with hypovolemic shock. Methodology: on admission hemodynamic monitoring of intravascular volume by CVP measurement,non invasive blood pressure measurement, urine output calculation were done, together with SVC ultrasound for measurement of diameter and collapsibility. Results: Patients with CVP equal or more than 10 was significantly associated with higher SVC max and SVC min, lower SVC CI. CVP showed significant positive correlation with dSCV max, dSVC min, significant negative correlation with SVC-CI. The best cut-off point of the SVC-CI for discrimination between patients with CVP |
