Hypopituitarism after acute brain injury

Area of Science:

• Neuroendocrinology
• Trauma Surgery
• Neurology

Background:

• Traumatic brain injury (TBI) is a leading cause of death and disability in young adults, with 1.5-2.0 million cases annually in the US.
• Consequences of TBI include severe motor, cognitive, and psychosocial deficits.
• Recent studies highlight pituitary dysfunction as a common complication following TBI and subarachnoid hemorrhage (SAH).

Purpose of the Study:

• To document the occurrence of pituitary dysfunction after acute brain injury, specifically TBI and SAH.
• To identify the prevalence of specific pituitary hormone deficiencies, such as growth hormone (GH) deficiency and adrenal insufficiency.
• To emphasize the importance of screening for pituitary dysfunction in patients with moderate to severe acute brain injury.

Main Methods:

• Clinical studies were reviewed to document pituitary dysfunction post-TBI and SAH.
• Prevalence rates of pituitary hormone deficiencies were analyzed.
• Timing of pituitary function assessment and potential interventions were considered.

Main Results:

• Moderate to severe TBI or SAH leads to pituitary dysfunction in 30-40% of patients.
• Growth hormone (GH) deficiency is the most common endocrine disorder, affecting approximately 20% of patients.
• Adrenal insufficiency is a primary concern within 7-21 days post-injury, with pituitary function stabilizing by 1 year.

Conclusions:

• Pituitary dysfunction is a frequent and significant complication of moderate to severe acute brain injury.
• Screening for pituitary dysfunction, particularly GH deficiency and adrenal insufficiency, is recommended for all patients with moderate to severe TBI or SAH.
• Ongoing research is exploring hormone replacement therapy's impact on TBI recovery.