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Related Concept Videos

Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

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Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
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Antiarrhythmic Drugs: Class III Agents as Potassium Channel Blockers01:12

Antiarrhythmic Drugs: Class III Agents as Potassium Channel Blockers

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Class III antiarrhythmic drugs are a group of medications that can prolong action potentials in the heart. They achieve this by blocking potassium channels or enhancing inward currents from sodium channels. However, these drugs have a unique property of "reverse use-dependence," which is most pronounced at slower heart rates and can lead to torsades de pointes—a specific type of arrhythmia. However, it is essential to note that excessive QT interval prolongation—a measure of...
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Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers01:22

Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers

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Class I antiarrhythmic drugs are used to treat various types of arrhythmias or irregular heart rhythms. These drugs block the sodium (Na+) channels in the cardiac cells, thereby affecting the movement of electrical impulses across the heart. Class I antiarrhythmic drugs are divided into three subgroups: Class IA, Class IB, and Class IC, each with distinct mechanisms of action and effects on the heart.
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
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Dosage Regimen: Fixed Dose01:01

Dosage Regimen: Fixed Dose

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Fixed-dose regimens are a common approach to administer drugs to achieve and maintain desired levels of the drug in the body. In this dosing strategy, a specific amount of medication is given at regular intervals, often multiple times a day, to ensure a consistent drug concentration in the bloodstream.
Fixed-dose regimens can be used for various routes of administration, including intravenous (IV) injections and oral medications. For IV administration, a predetermined amount of the drug is...
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Related Experiment Video

Updated: Jul 12, 2025

Genetic Encoding of a Non-Canonical Amino Acid for the Generation of Antibody-Drug Conjugates Through a Fast Bioorthogonal Reaction
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Digoxin-specific antibodies: a novel dosing strategy.

Marieke A Dijkman1, Femke M J Gresnigt2,3, Dylan W de Lange2,4

  • 1Dutch Poisons Information Centre, University Medical Centre Utrecht, Utrecht, The Netherlands. M.Dijkman-2@umcutrecht.nl.

Netherlands Heart Journal : Monthly Journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation
|October 20, 2023
PubMed
Summary

Digoxin-specific antibodies (digoxin-Fabs) offer a life-saving treatment for digoxin toxicity. Updated dosing strategies now recommend lower doses, improving safety and reducing costs.

Keywords:
AntidoteDigoxin poisoningDigoxin-specific antibodies

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Area of Science:

  • Pharmacology
  • Toxicology
  • Emergency Medicine

Background:

  • Digoxin toxicity is a serious condition requiring prompt treatment.
  • Digoxin-specific antibodies (digoxin-Fabs) are crucial for managing severe digoxin poisoning.
  • These life-saving antibodies are not routinely stocked in European pharmacies, including the Netherlands.

Purpose of the Study:

  • To present an adjusted digoxin-Fab dosing strategy for digoxin toxicity.
  • To inform healthcare professionals about the availability and updated use of digoxin-Fabs in the Netherlands.
  • To highlight the safety, efficacy, and cost-effectiveness of the new dosing approach.

Main Methods:

  • Review of recent studies on digoxin-Fab efficacy.
  • Development of an adjusted dose titration strategy.
  • Consultation with the Dutch Poisons Information Centre for recommendations.

Main Results:

  • Recent research indicates lower effective doses of digoxin-Fabs than previously assumed.
  • The Dutch Poisons Information Centre now recommends an adjusted dosing strategy.
  • The new strategy has demonstrated safety and effectiveness in clinical practice.

Conclusions:

  • The updated digoxin-Fab dosing strategy is safe and effective for treating digoxin toxicity.
  • This revised approach offers potential cost savings.
  • Ensuring access to digoxin-Fabs through emergency stocks and updated protocols is vital.