Definition

1. Noun:
   • A specific antiarrhythmic medication: Encainide is a pharmaceutical drug used to treat serious, life-threatening heart rhythm disorders (arrhythmias). It was marketed under the brand name Enkaid. Its use is associated with an increased risk of sudden death in patients who have had a heart attack.

Usage

• Encainide is a proper noun referring to a specific chemical compound and drug. It is typically used in medical, pharmacological, and clinical contexts.
• It is an uncountable noun when referring to the substance itself (e.g., a dose of encainide).
• Example:

Examples

• Medical Context:
  • The physician prescribed encainide to manage the patient's severe ventricular tachycardia.
  • Due to its proarrhythmic effects, encainide is no longer widely used in clinical practice.
  • The pharmacokinetics of encainide are complex, with active metabolites.

Advanced Usage

• Historical/Clinical Context: Encainide is often discussed in the context of the Cardiac Arrhythmia Suppression Trial (CAST), which demonstrated that certain antiarrhythmic drugs, including encainide, could increase mortality despite suppressing arrhythmias.
  • Example: The CAST results led to a major paradigm shift in the treatment of arrhythmias and the withdrawal of encainide from the market.

Variants and Related Words

• Enkaid: The former brand name/trade name for encainide.
• Antiarrhythmic (drug/agent): The general class of drugs to which encainide belongs. Encainide is classified as a Class IC antiarrhythmic.
• Flecainide: Another Class IC antiarrhythmic drug with a similar profile and history.

Synonyms

• Antiarrhythmic agent: A general term for drugs that treat irregular heartbeats.
• Class IC antiarrhythmic: The specific pharmacological classification for encainide.

Notes on Meaning

• The primary meaning of "encainide" is as a specific drug entity. It does not have other common non-medical meanings, idioms, or phrasal verbs associated with it. Its definition is tightly bound to its pharmacological action and clinical history.

Noun

1. antiarrhythmic drug (trade name Enkaid) used to treat life-threatening arrhythmias but increases the risk of sudden death in heart attack patients