Predicting Hemodynamic Fluctuations During Adrenalectomy for Pheochromocytoma

Area of Science:

• Endocrinology
• Surgical Oncology
• Anesthesiology

Background:

• Pheochromocytoma, a rare adrenal tumor, causes catecholamine excess, leading to perioperative hemodynamic instability.
• Intraoperative hypotension remains a significant complication despite anesthetic and surgical advancements.
• Predicting and managing hemodynamic instability during adrenalectomy is crucial for patient safety.

Purpose of the Study:

• To identify preoperative and intraoperative predictors of hemodynamic instability during adrenalectomy for pheochromocytoma.
• To enhance intraoperative management strategies for patients with pheochromocytoma.
• To improve patient safety and perioperative outcomes.

Main Methods:

• Retrospective analysis of adult patients undergoing adrenalectomy for pheochromocytoma.
• Inclusion of preoperative data, tumor characteristics (CT/MRI), surgical approach, and intraoperative hemodynamics.
• Logistic regression analysis to determine predictors of intraoperative hypotension (MAP < 60 mmHg).

Main Results:

• Intraoperative hypotension occurred in 51% of patients.
• Larger tumor size (diameter ≥ 49 mm) and high intraoperative fluid infusion (≥ 1200 mL/h) were independent predictors of hypotension.
• Preoperative catecholamine levels and surgical approach were not significant predictors.

Conclusions:

• Tumor size is a key predictor of intraoperative hemodynamic instability in pheochromocytoma adrenalectomy.
• Individualized preoperative assessment and intraoperative fluid management are essential.
• Optimizing management can reduce hypotension risk and improve perioperative outcomes.