phenylephrine

Thân thiện

A doctor administers phenylephrine eye drops to a patient.

Definition

1. Noun:
   • A synthetic sympathomimetic drug: Phenylephrine is a medication that mimics the effects of the sympathetic nervous system, primarily causing blood vessels to constrict.
   • A decongestant and mydriatic agent: It is used medically to relieve nasal congestion by shrinking swollen nasal tissues and to dilate the pupils for eye examinations.

Examples of Usage

• Noun:
  • The doctor recommended a nasal spray containing phenylephrine for my cold.
  • Phenylephrine is often used in eye drops before an optometrist's examination.

Advanced Usage

• Clinical Context: In medical literature, phenylephrine is discussed for its role in managing hypotension (low blood pressure) during certain surgical procedures due to its vasoconstrictive properties.
  • The anesthesiologist administered phenylephrine to counteract the drop in the patient's blood pressure.

Variants and Related Words

• Phenylephrine hydrochloride: This is the salt form commonly used in pharmaceutical preparations.
  • Check the label; the active ingredient is phenylephrine hydrochloride.

Synonyms

• Decongestant: A substance that relieves nasal congestion. (Note: This is a broader category; phenylephrine is a specific type of decongestant.)
• Vasoconstrictor: An agent that causes narrowing of blood vessels.

Related Phrases (Phrasal Verbs)

Not applicable for this specific pharmaceutical term.

Related Idioms

Not applicable for this specific pharmaceutical term.

Học thuật

Noun

1. a powerful vasoconstrictor used to dilate the pupils and relieve nasal congestion