Masimo® Plethysmograph Variability Index as a Tool for Assessment of Fluid Responsiveness in Elective Major Abdominal Surgeries Journal title: Journal of Advances in Medicine and Medical Research Authors: Ahmed M. Essam, Mohamed Z. Ali, Mohamed A. Maher, Ali M. Mokhtar, Sohila H. Omar, Hossam H. El-Sabae... Subject(s):