Anterior Pituitary Dysfunction After Traumatic Brain Injury: A Prospective Study.

Area of Science:

• Neuroendocrinology
• Traumatology

Background:

• Anterior pituitary dysfunction is a significant cause of disability following traumatic brain injury (TBI).
• Understanding its incidence and prognostic value is crucial for patient management.

Purpose of the Study:

• To evaluate the incidence of anterior pituitary dysfunction in moderate to severe TBI.
• To assess its role in long-term prognostication.
• To identify predisposing factors in acute and chronic TBI phases.

Main Methods:

• Prospective cohort study of 216 patients with moderate to severe TBI.
• Evaluations conducted within 72 hours (acute) and at 6 months (chronic) post-TBI.
• Assessment of anterior pituitary axes (hypopituitarism, thyroid, gonadal, adrenal).

Main Results:

• In the acute phase, 82.4% had hypopituitarism, with thyroid axis deficiency in 57.4% and gonadal axis deficiency in 54.2%.
• In the chronic phase, hypopituitarism decreased to 59.3%, thyroid axis deficiency to 24.4%, and gonadal axis deficiency to 32.6%.
• Thyroid axis deficiency at admission correlated with a worse modified Rankin Scale score at 6 months.

Conclusions:

• Thyroid and gonadotropin axes are most frequently affected by TBI.
• Deficiency in at least one pituitary axis was observed in 82.4% acutely and 59.3% chronically.
• Thyroid axis deficiency negatively impacts prognosis in patients with TBI.