Comparison of Changes in PPV Using a Tidal Volume Challenge with a Passive Leg Raising Test to Predict Fluid Responsiveness in Patients Ventilated Using Low Tidal Volume. - Elsayed AI; Selim KA; Zaghla HE; Mowafy HE; Fakher MA (Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine, 2021)