Fluid Responsiveness in Posterior Fossa Tumor Resection: PPV and CVP Guidance

Fluid Responsiveness Assessment in Adult Neurosurgical Patients Undergoing Posterior Fossa Tumor Resection in the Park Bench Position: a Comparison Between Pulse Pressure Variation (PPV) and Central Venous Pressure (CVP) Guidance

To answer the question: What are the differences in intraoperative fluid administration volumes between PPV and CVP-guided strategies during posterior fossa tumor resection in the park bench position?

Prospective RCT is conducted to compared the amount of fluid volume in adult patients undergoing posterior fossa surgery in park bench position.

Inclusion Criteria:

1. Adult patients aged 18 years and above
2. American Society of Anesthesiologists (ASA) I and II
3. Diagnosis of posterior fossa tumor requiring surgical resection in the park bench position, under general anesthesia at our hospital
4. Willing to participate in the study

Exclusion Criteria:

1. Arrhythmia
2. Significant cardiac diseases
3. Chronic obstructive airway disease
4. Elevated intra-abdominal pressure
5. Tumors prone to precipitate diabetes insipidus
6. Peripheral vascular disease
7. Pulmonary hypertension
8. Patients in sepsis