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Related Concept Videos

Inhalational Anesthetics: Overview01:20

Inhalational Anesthetics: Overview

Inhalation anesthetics are drugs that induce general anesthesia upon inhalation. They work by increasing the sensitivity of GABAA receptors or inhibiting NMDA receptors, leading to a decrease in central nervous system activity. The depth of anesthesia can be rapidly adjusted by changing the concentration of the inhaled gas. Some common examples of inhalational anesthetics include volatile liquids like isoflurane, desflurane, sevoflurane and gases like xenon and nitrous oxide. Isoflurane, a...
Hepatitis01:25

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Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...
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Idiosyncratic drug reactions represent abnormal chemical responses that vary significantly among individuals, ranging from extreme sensitivity to low doses to insensitivity to high doses. These reactions often occur due to the drug's covalent binding with serum proteins, forming a foreign hapten that triggers an immunotoxicological response. The variability in drug reactions has a strong pharmacogenetic foundation, with genetic differences crucial in how individuals metabolize drugs. For...
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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...
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Induction of Drug-Induced, Autoimmune Hepatitis in BALB/c Mice for the Study of Its Pathogenic Mechanisms
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Halothane-induced hepatitis: A forgotten issue in developing countries: Halothane-induced hepatitis.

Peiman Habibollahi1, Nastaran Mahboobi, Sara Esmaeili

  • 1Department of Gastroenterology, Tehran University of Medical Sciences, Tehran, IR Iran.

Hepatitis Monthly
|November 17, 2011
PubMed
Summary
This summary is machine-generated.

Halothane anesthesia can cause immune-related liver damage, with severe cases being fatal. Newer anesthetics are safer but more expensive, necessitating cost-benefit analyses for their adoption.

Keywords:
AnestheticsHalogenatedHalothaneHepatitis

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Published on: October 23, 2018

Area of Science:

  • Anesthesiology
  • Hepatology
  • Immunology

Background:

  • Halothane, a revolutionary anesthetic introduced in the 1950s, poses risks of hepatotoxicity.
  • Two types of halothane-induced hepatitis exist: mild (Type 1) and severe, potentially fatal (Type 2).
  • Evidence suggests halothane hepatotoxicity is immune-mediated, linked to metabolic byproducts and neo-antigen formation.

Purpose of the Study:

  • To review the mechanisms and clinical manifestations of halothane-induced hepatotoxicity.
  • To compare the safety profiles of halothane with newer halogenated anesthetics.
  • To discuss the implications of anesthetic choice on patient safety and healthcare economics.

Main Methods:

  • Literature review of halothane anesthesia and its associated liver injury.
  • Analysis of the immunological mechanisms underlying halothane hepatotoxicity.
  • Comparative assessment of halothane versus newer anesthetics (enflurane, sevoflurane, desflurane).

Main Results:

  • Halothane metabolism generates free radicals, leading to protein modification and neo-antigen presentation.
  • Repeated halothane exposure can cause immune sensitization, increasing the risk of severe (Type 2) hepatitis.
  • Newer anesthetics are minimally metabolized in the liver, significantly reducing sensitization and hepatotoxicity risk.

Conclusions:

  • Halothane-induced hepatotoxicity is an immune-related adverse effect, particularly with repeated exposure.
  • Newer halogenated anesthetics offer improved safety due to reduced hepatic metabolism.
  • The high cost of newer anesthetics necessitates careful cost-benefit evaluations, especially in resource-limited settings.