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Related Concept Videos

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...
Drug toxicity: Idiosyncratic Reactions01:16

Drug toxicity: Idiosyncratic Reactions

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...
Drug Toxicity: Overview01:00

Drug Toxicity: Overview

Drug toxicity quantifies the harm a compound causes to an organism, varying by dose and potentially impacting whole systems or specific organs like the liver. Toxic reactions may arise from venomous insect or spider bites, with effects ranging from mild symptoms to severe outcomes such as brain damage or death. Common forms of acute poisoning include ethanol intoxication and overdose of pain or fever medications, with substances like GHB and heroin being particularly lethal at doses close to...
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...
Drug Abuse and Addiction: Pharmacological Phenomena01:15

Drug Abuse and Addiction: Pharmacological Phenomena

Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not necessarily...
Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...

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Updated: Jun 16, 2026

Tracking Drug-induced Changes in Receptor Post-internalization Trafficking by Colocalizational Analysis
07:48

Tracking Drug-induced Changes in Receptor Post-internalization Trafficking by Colocalizational Analysis

Published on: July 3, 2015

[Drug-induced delirium].

Sandra Meyer1, Otto Meyer, Reto W Kressig

  • 1Akutgeriatrie, Universitätsspital Basel. smeyer@uhbs.ch

Therapeutische Umschau. Revue Therapeutique
|February 5, 2010
PubMed
Summary
This summary is machine-generated.

Drug-induced delirium is a common concern in the elderly, especially with multiple medications. Reducing anticholinergic burden is key to preventing and managing this reversible condition.

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Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
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Published on: February 6, 2019

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Last Updated: Jun 16, 2026

Tracking Drug-induced Changes in Receptor Post-internalization Trafficking by Colocalizational Analysis
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Tracking Drug-induced Changes in Receptor Post-internalization Trafficking by Colocalizational Analysis

Published on: July 3, 2015

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
09:26

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication

Published on: February 6, 2019

Area of Science:

  • Geriatric Medicine
  • Pharmacology
  • Neuroscience

Context:

  • Delirium is a significant concern in the elderly, often triggered by medications.
  • Aging-related physiological changes and comorbidities increase susceptibility to drug-induced delirium.
  • Polypharmacy and anticholinergic toxicity are prevalent issues in older adults.

Purpose:

  • To highlight the association between drug use and delirium development.
  • To emphasize the role of anticholinergic burden in drug-induced delirium.
  • To underscore the importance of medication monitoring in preventing delirium.

Summary:

  • Drugs are easily reversible triggers for delirium, particularly in the elderly.
  • Anticholinergic activity is a major risk factor, with the burden increasing with more medications.
  • Dementia and other brain pathologies exacerbate delirium risk due to blood-brain barrier changes.

Impact:

  • Close medication monitoring can reduce delirium-associated morbidity and mortality.
  • Avoiding anticholinergic drugs, especially in elderly patients with dementia, is recommended.
  • Preventing misinterpretation of adverse drug reactions can avoid further unnecessary prescriptions.