Related Experiment Video
Updated: Aug 11, 2026
05:01
A Detailed Protocol for Physiological Parameters Acquisition and Analysis in Neurosurgical Critical Patients
Published on: October 17, 2017
Intracranial hypertension
1College of Optometry, Nova Southeastern University, Fort Lauderdale, Florida, USA.
Optometry Clinics : the Official Publication of the Prentice Society
|January 1, 1996
Summary
Intracranial hypertension, a syndrome of elevated intracranial pressure, presents with various symptoms like headache and papilledema. Prompt diagnosis and management are crucial for preventing serious complications.
Area of Science:
- Neurology
- Ophthalmology
Background:
- Intracranial hypertension is a syndrome, not a diagnosis, stemming from various neurological and systemic disorders.
- It is characterized by prolonged elevated intracranial pressure, typically above 200 mm H2O.
- Clinical manifestations include headache, papilledema, visual disturbances, and neurological deficits.
Purpose of the Study:
- To outline the syndrome of intracranial hypertension.
- To detail its common causes, clinical signs, and diagnostic approaches.
- To discuss current management strategies and the role of primary care optometrists.
Main Methods:
- Review of clinical signs and symptoms associated with intracranial hypertension.
- Discussion of common etiologies, including mass lesions, hydrocephalus, and venous outflow disorders.
- Overview of diagnostic evaluations, encompassing medical testing and ocular assessments.
Main Results:
- Intracranial hypertension presents with a constellation of symptoms requiring thorough investigation.
- Common causes include mass lesions, hydrocephalus, pseudotumor cerebri, and venous outflow abnormalities.
- Management options range from medical therapy (diuretics, corticosteroids) to surgical interventions like CSF shunting or optic nerve sheath decompression.
Conclusions:
- Early recognition of intracranial hypertension signs by optometrists is vital for timely referral and management.
- Effective management requires addressing the underlying cause of elevated intracranial pressure.
- Multidisciplinary collaboration is essential for optimal patient outcomes.
Related Concept Videos
01:17Hemorrhagic Stroke l: Introduction
A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
01:14Increased 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...
01:29Increased 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...
01:19Cerebral Edema l: Introduction
Cerebral edema is a pathological increase in brain water content that disrupts intracranial pressure regulation and impairs neurological function. Because the cranial vault is rigid, even modest increases in tissue volume can compromise cerebral perfusion, distort neural structures, and initiate secondary injury. Cerebral edema develops through four principal mechanisms: vasogenic, cytotoxic, interstitial, and ionic.Vasogenic EdemaVasogenic edema arises from disruption of the blood–brain...
01:22Cerebral Edema ll: Pathophysiology
Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
01:21Cytotoxic Edema: Pathophysiology
Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous supply...