Risk factors for intraoperative complications in pheochromocytomas.
Endocrine-related Cancer 2021 September 9
We aimed to identify presurgical and surgical risk factors for intraoperative complications in patients with pheochromocytomas. A retrospective study of patients with pheochromocytomas who underwent surgery in ten Spanish hospitals between 2011 and 2021 was performed. One hundred and sixty-two surgeries performed in 159 patients were included. The mean age was 51.6 ± 16.4 years old and 52.8% were women. Median tumour size was 40 mm (range 10-110). Laparoscopic adrenalectomy was performed in 148 patients and open adrenalectomy in 14 patients. Presurgical alpha- and beta-blockade was performed in 95.1% and 51.9% of the surgeries, respectively. 33.3% of the patients (n = 54) had one or more intraoperative complications. The most common complication was the hypertensive crisis in 21.0%, followed by prolonged hypotension in 20.0%, and hemodynamic instability in 10.5%. Patients pre-treated with doxazosin required intraoperative hypotensive treatment more commonly than patients pre-treated with other antihypertensive drugs (51.1% vs 26.5%, P = 0.002). Intraoperative complications were more common in patients with higher levels of urine metanephrine (OR = 1.01 for each 100 μg/24 h, P = 0.026) and normetanephrine (OR = 1.00 for each 100 μg/24 h, P = 0.025), larger tumours (OR = 1.4 for each 10 mm, P < 0.001), presurgical blood pressure > 130/80 mmHg (OR = 2.25, P = 0.027), pre-treated with doxazosin (OR = 2.20, P = 0.023) and who had not received perioperative hydrocortisone (OR = 3.95, P = 0.008). In conclusion, intraoperative complications in pheochromocytoma surgery are common and can be potentially life-threatening. Higher metanephrine and normetanephrine levels, larger tumour size, insufficient blood pressure control before surgery, pre-treatment with doxazosin, and the lack of treatment with perioperative hydrocortisone are associated with higher risk of intraoperative complications.
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