Metabolic response to subtotal thyroidectomy in propranolol-treated thyrotoxic patients

Area of Science:

• Endocrinology
• Surgical Physiology

Background:

• Thyrotoxicosis poses surgical risks due to hypermetabolic state.
• Propranolol is used to manage thyrotoxic symptoms preoperatively.
• Its impact on surgical metabolic response requires further elucidation.

Purpose of the Study:

• To compare the metabolic and physiological responses to subtotal thyroidectomy in thyrotoxic patients pretreated with propranolol versus patients with non-toxic goiter.
• To assess the safety and efficacy of propranolol as a preoperative preparation for thyroid surgery.

Main Methods:

• Measured plasma cortisol, glucose, cyclic AMP, blood leucocytes, pulse rate, and body temperature.
• Monitored parameters during and for 24 hours post-subtotal thyroidectomy.
• Compared data between eight propranolol-treated mild to moderate thyrotoxic patients and eight non-toxic goiter patients.

Main Results:

• No significant differences in metabolic or physiological responses to surgery were observed between the two groups.
• Thyrotoxic patients on propranolol did not exhibit a hypermetabolic response post-surgery.
• Surgical stress markers remained comparable across both patient cohorts.

Conclusions:

• Preoperative propranolol treatment in mild to moderate thyrotoxicosis appears safe for subtotal thyroidectomy.
• Propranolol does not exacerbate the metabolic stress response to thyroid surgery.
• Results support the use of propranolol for preoperative management in this patient group.