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Related Concept Videos

Hepatic Encephalopathy01:29

Hepatic Encephalopathy

DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...
Encephalitis l: Introduction01:19

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
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Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test01:22

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test

In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess the...
Esophageal Varices-II: Clinical Features and Management01:28

Esophageal Varices-II: Clinical Features and Management

Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol abuse, or...
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Cerebral 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...

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Related Experiment Video

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A Piglet Model of Neonatal Hypoxic-Ischemic Encephalopathy
10:30

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Published on: May 16, 2015

Hepatic encephalopathy.

Santiago J Munoz1

  • 1Division of Hepatology, Department of Medicine, Albert Einstein Medical Center, Philadelphia, PA 19141, USA. orolonco@comcast.net

The Medical Clinics of North America
|June 24, 2008
PubMed
Summary
This summary is machine-generated.

Hepatic encephalopathy (HE) is a brain dysfunction from liver issues and abnormal blood flow. Early diagnosis and intervention can reverse mental changes, even coma, in patients with HE.

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Area of Science:

  • Hepatology
  • Neurology
  • Gastroenterology

Background:

  • Hepatic encephalopathy (HE) is a neuropsychiatric syndrome.
  • It results from portosystemic venous shunting, with or without intrinsic liver disease.
  • HE manifests as mental status changes, from subtle abnormalities to coma.

Purpose of the Study:

  • To review recent advances in understanding HE.
  • To discuss current management strategies for HE.
  • To highlight opportunities for clinical intervention in HE.

Main Methods:

  • Review of current literature on hepatic encephalopathy.
  • Synthesis of recent findings on HE pathophysiology.
  • Analysis of updated clinical management guidelines for HE.

Main Results:

  • HE involves complex neuropsychiatric dysfunction.
  • Multiple hypotheses explain HE's mental impairment.
  • Effective interventions can reverse HE, including coma.

Conclusions:

  • Understanding HE has advanced significantly.
  • Management strategies offer opportunities for reversal.
  • Timely intervention is crucial for HE patients.