Intra-Operative Fluid Management in Adult Neurosurgical Patients Undergoing Intracranial Tumour Surgery: Randomised Control Trial Comparing Pulse Pressure Variance (PPV) and Central Venous Pressure (CVP) Categories: Fluid Management for Neurosurgical Patients Author: Amar Nandha Kumar, Grace Korula, Serina Ruth Salins, Shalini Cynthia Sundaram