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Related Concept Videos

Toxidromes: Clinical Features01:30

Toxidromes: Clinical Features

Toxidromes are specific patterns of symptoms resulting from toxic substance exposure. They help in the identification and treatment of poisoning. The symptoms of each toxidrome group indicate poisoning by a certain class of chemicals or drugs.1. Sympathomimetic: Stimulates the sympathetic nervous system. Symptoms include agitation, increased heart rate (HR), blood pressure (BP), respiratory rate (RR), temperature, and pupil size. Drugs like cocaine and amphetamines, along with tremors and...
Pharmaceutical Poisoning: Treatment Strategies01:26

Pharmaceutical Poisoning: Treatment Strategies

Treatment strategies for poisoning are a critical aspect of emergency medicine, focusing on preventing the absorption of toxins and enhancing their elimination. When a poisoning incident occurs, the first response is to halt exposure and decontaminate the patient, particularly through gastrointestinal (GI) methods if the poison was ingested.Gastrointestinal Decontamination Techniques:Activated charcoal is the cornerstone of GI decontamination. It works through adsorption, binding the toxin to...
Anticholinesterase Agents: Poisoning and Treatment01:26

Anticholinesterase Agents: Poisoning and Treatment

Anticholinesterases, also known as cholinesterase inhibitors, work by blocking the breakdown of acetylcholine, leading to its accumulation in the synaptic cleft. This accumulation indirectly enhances both muscarinic and nicotinic actions. These agents are classified as reversible or irreversible based on their mechanism of action.     
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Prevention of Further Absorption of Poison01:14

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In cases of acute poisoning, the primary objective is to prevent further absorption of the toxic substance into the body. Immediate interventions using various decontamination techniques targeting the gastrointestinal (GI) tract can achieve this. Decontamination is crucial to prevent poison from entering the systemic circulation, which involves washing affected areas with water and mild soap and removing contaminated clothing. Once external decontamination is done, attention must be turned to...
Drug Toxicity: Dose-Dependent Reactions01:24

Drug Toxicity: Dose-Dependent Reactions

Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
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Enhanced Elimination of Poison

Poison can be effectively removed from the gastrointestinal (GI) tract through various decontamination procedures.
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...

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Fatal mephenesin intoxication.

Laurent Fanton1, Fabien Bévalot, Patrice Schoendorff

  • 1Institut Universitaire de Médecine Légale, de Lyon Université, Claude-Bernard Lyon1, 12 avenue Rockefeller, 69008 Lyon, France. laurent.fanton@adm.univ-lyon1.fr

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This is the first reported case of a fatal mephenesin overdose. The 48-year-old woman

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Area of Science:

  • Forensic Toxicology
  • Clinical Toxicology
  • Pharmacology

Background:

  • Mephenesin is a muscle relaxant.
  • Drug abuse and intoxication can lead to severe health consequences.

Observation:

  • A 48-year-old woman was found deceased.
  • Initial toxicological tests were negative; autopsy revealed bronchial inhalation syndrome.
  • Mephenesin was detected in autopsy samples at high concentrations.

Findings:

  • This is the first reported case of lethal intoxication solely due to mephenesin.
  • Mephenesin blood concentration was 15.81 microg/mL, significantly exceeding therapeutic levels.
  • Cause of death was determined to be bronchial inhalation syndrome secondary to mephenesin overdose.

Implications:

  • Highlights the potential for mephenesin overdose and toxicity.
  • Underscores the importance of comprehensive toxicological analysis in unexplained deaths.
  • Suggests the need for awareness regarding the abuse potential of mephenesin.