Is There Any Correlation Between Respiratory Variation Ratios of Internal Jugular Vein and Inferior Vena Cava?

Intravascular volume assesment is important for the management of the patients in the intensive care unit. Respiratory variation ratio of the inferior vena cava (IVC) can be determined by ultrasonography (USG) and is a useful tool for hemodynamic evaluation of the patient. Aim of this study is to search for correlation between respiratory variation ratios of the internal jugular vein (IJV) and the IVC before and after passive leg raise. Another aim of this study is to search for variability between ultrasonographic measurements of different doctors.