Echocardiographic Evaluation of Central Venous Pressure Using Inferior Vena Cava Characteristics: An Estimate Guide for Right Atrial Pressure in Intensive Care Unit

There is a linear relationship of IVC-CI with TAPSE but an inverse relation with RA area. Evaluation of IVC diameter and its CI is an easy and noninvasive method to estimate CVP and RAP and so evaluate right heart performance of critically ill patients. Its use is more helpful in patients who are spontaneously breathing than those who are mechanically ventilated.