Definition

1. Noun:
   • A specific antiarrhythmic medication: "Enkaid" is a proprietary name (trade name) for the drug encainide hydrochloride. It is classified as a Class IC antiarrhythmic agent used to treat certain serious, life-threatening heart rhythm disorders (ventricular arrhythmias).

Usage Examples

• Noun:
  • The cardiologist prescribed Enkaid to manage the patient's severe arrhythmia.
  • Due to its associated risks, the use of Enkaid requires careful monitoring.

Advanced Usage

• Historical/Medical Context: "Enkaid" is often discussed in medical literature concerning the Cardiac Arrhythmia Suppression Trial (CAST). This trial found that while drugs like Enkaid suppressed arrhythmias, they paradoxically increased the risk of fatal cardiac events in post-heart attack patients, leading to significant changes in prescribing practices.
  • The CAST study results dramatically reduced the clinical use of Enkaid.

Variants and Related Words

• Encainide (n): The generic, non-proprietary name for the drug.
  • Encainide is the active pharmaceutical ingredient in Enkaid.
• Antiarrhythmic (n/adj): A broader class of drugs used to treat irregular heartbeats.
  • Enkaid is a potent but high-risk antiarrhythmic.

Synonyms

• Encainide hydrochloride: The full chemical name.
• Class IC antiarrhythmic: Its pharmacological classification.

Notes on Usage

• "Enkaid" is typically used with an initial capital letter as it is a trademark.
• Its use is now highly restricted and primarily of historical interest in clinical cardiology due to the associated risk of proarrhythmia and increased mortality identified in major clinical trials. It serves as a key example in discussions of drug safety and clinical trial ethics.

Noun

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