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Related Concept Videos

Traumatic Brain Injury l: Introduction01:28

Traumatic Brain Injury l: Introduction

DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...
The Pituitary Gland01:17

The Pituitary Gland

The pituitary is a small endocrine organ in the sphenoid bone under the hypothalamus. Primarily, the pituitary in adults has two distinct anatomical and functional regions— the anterior and posterior lobes. During human fetal development, a third pituitary gland region called the pars intermedia atrophies and disappears. However, some of its cells migrate and exist adjacent to the anterior pituitary in adults.
Increased Intracranial Pressure ll: Pathophysiology01:29

Increased Intracranial Pressure ll: Pathophysiology

Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...
Post-traumatic Stress Disorder01:27

Post-traumatic Stress Disorder

Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events, are a...
Increased Intracranial Pressure l: Introduction01:14

Increased Intracranial Pressure l: Introduction

Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...
Hormones of the Pituitary Gland01:27

Hormones of the Pituitary Gland

The small, pea-sized pituitary gland is located at the base of the brain. It is crucial in regulating various bodily functions, from growth to reproduction. The gland is divided into the anterior lobe and the posterior lobe. The secretory cell clusters in the pars distalis of the anterior pituitary lobe are controlled by hypothalamic regulators and synthesize six primary hormones.
The most abundantly secreted hormone from the anterior lobe is the growth hormone, which controls overall growth by...

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Post-traumatic head injury pituitary dysfunction.

Malik Zaben1, Wessam El Ghoul, Antonio Belli

  • 1Department of Neurosurgery, University Hospital of Wales, Cardiff, UK.

Disability and Rehabilitation
|July 12, 2012
PubMed
Summary

Traumatic brain injury (TBI) survivors frequently experience pituitary dysfunction, leading to diverse symptoms and potential long-term disability. Early diagnosis and treatment of post-traumatic hypopituitarism (PTHP) are crucial for improving patient outcomes.

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Area of Science:

  • Neuroendocrinology
  • Trauma Surgery
  • Neurology

Background:

  • Pituitary dysfunction affects 33-50% of traumatic brain injury (TBI) survivors, contributing significantly to disability.
  • The pituitary gland is vulnerable to shearing injuries, increased intracranial pressure, and skull fractures, often leading to ischemia or hemorrhage.
  • Post-traumatic hypopituitarism (PTHP) symptoms overlap with common post-concussive symptoms, complicating diagnosis across all injury severities.

Purpose of the Study:

  • To highlight the incidence and diagnostic challenges of post-traumatic hypopituitarism (PTHP) in TBI survivors.
  • To discuss the wide-ranging clinical manifestations of PTHP, from fatigue to life-threatening adrenal crisis.
  • To address the lack of consensus on screening protocols and the importance of specialized neuroendocrine assessment for accurate diagnosis and treatment.

Main Methods:

  • Review of existing literature on pituitary dysfunction following TBI.
  • Analysis of the anatomical vulnerabilities of the hypophyseal vessels.
  • Discussion of diagnostic challenges due to symptom overlap and the limitations of acute-phase testing.

Main Results:

  • PTHP affects a substantial portion of TBI survivors, with symptoms manifesting variably.
  • Features of PTHP include fatigue, cognitive difficulties, depression, and severe complications like sodium dysregulation.
  • Recovery is possible in some cases, but late-onset PTHP is also recognized.

Conclusions:

  • There is no consensus on universal screening for PTHP in TBI patients, including those with mild TBI.
  • Accurate diagnosis requires specialized neuroendocrine assessment, as random hormone levels can be misleading.
  • Identifying and treating hormone deficiencies in PTHP is essential for optimizing rehabilitation and preventing severe complications.