Comparison of Subclavian vein and Inferior vena cava Collapsibility Index for Evaluation of Intravascular Volume Status in Intensive care unit by Ultrasonography-A prospective observational study

Inferior vena cava collapsibility index is considered as a standard method to know the volume status of a patient. where as certain situations where it cannot be measured such as patients with large abdominal dressing, obese patients etc will require an alternative method of assessing the volume status. hence we chose to see if subclavian vein corelates as it is more superficial and easy to access and less time consuming. therefore, patients admitted in the ICU and on inotropic supports , undergone major abdominal surgeries and other causes leading to hypovolemic status will be included in the study. collapsibility index of the subclavian vein and inferior vena cava will be compared by obtaining a minimum of 2-3 readings per patient. the time taken to record the values will also be noted. and compared for the efficacy of the collapsibility index of subclavian vein as an alternative for inferior vena cava.