Evaluating Fluid Responsiveness in ICU Patients Using VTI and Trendelenburg Positioning

"There are essentially two arms, whereby the patients is being compared to themselves. The intervention arm is the same patient undergoing TP from the baseline supine position to determine the change in VTI after subjecting to TP.~We will be using a Sonosite PX ultrasound system, which is intended for diagnostic ultrasound imaging or fluid flow analysis of the human body and, more specifically, for our echocardiographic measurements of velocity time integral (VTI; surrogate for stroke volume and cardiac output). The Sonosite PX is a general-purpose ultrasound system intended for use by qualified physicians and healthcare professionals, for evaluation by ultrasound imaging or fluid flow analysis of the human body. This is an FDA-cleared (510K# K200964) commercial device legally marketed in the United States that is being used in accordance with labeling."