Venous Hemodynamics

Ultrasonographic evaluation of the inferior vena cava (IVC) is widely used in emergency and critical care settings for noninvasive assessment of intravascular volume status. The subcostal (SC) window is the standard approach; however, it is frequently limited by obesity, bowel distension, or postoperative anatomical changes. In such cases, the right coronal (RC) and anterior transhepatic (aTH) windows have been proposed as alternatives.