prn

Thân thiện

Add water to the mixture prn.

Definition

1. Adverb:
   • As needed, when required: "prn" is a medical abbreviation used to indicate that a medication or action should be taken only when necessary, not on a fixed schedule. It is derived from the Latin phrase "pro re nata."

Usage

• "prn" is used almost exclusively in medical, clinical, or prescription contexts. It instructs a patient or caregiver to administer a treatment based on the presence of specific symptoms or conditions.
• It is typically written in lowercase ("prn") on prescriptions and medical orders.

Examples

• Adverb:
  • The patient was instructed to take the pain medication prn for breakthrough pain. (The patient should take the medicine only when experiencing severe pain.)
  • Apply the ointment prn for itching. (Apply the ointment only when itching occurs.)
  • The nurse may provide comfort measures prn. (The nurse can provide these measures whenever they are needed.)

Advanced Usage

• In formal medical writing, "prn" is used as an adverb to modify the verb of administration (e.g., , , ).
• It can be considered a medical order or instruction in itself.

Variants and Related Words

• PRN (initialism): An alternative, capitalized form with the same meaning.
• Pro re nata (Latin phrase): The full Latin phrase from which "prn" is abbreviated, meaning "for the thing that has arisen."
• As needed (phrase): The direct English translation and synonym, used in both medical and general contexts.
• As required (phrase): A synonym with identical meaning in this context.

Synonyms

• As needed
• As required
• When necessary

Related Phrases / Idioms

• prn basis: A common phrase meaning "on an as-needed basis."
  • The medication is prescribed on a prn basis.

Học thuật

Adverb

1. according to need (physicians use PRN in writing prescriptions)
   • add water as needed

Từ đồng nghĩa

• as needed
• as required
• pro re nata
• PRN