ExCPT Dosage Forms and Routes of Administration Flashcards
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Which route of administration provides the fastest onset of action?
Answer: Intravenous
Intravenous (IV) administration delivers the drug directly into the bloodstream, bypassing absorption and producing the fastest onset of action.
An enteric-coated tablet is specifically designed to:
Answer: Resist dissolution in stomach acid
Enteric coatings protect the tablet from dissolution in the acidic stomach environment, allowing it to dissolve in the small intestine instead.
The abbreviation 'SL' on a prescription indicates the medication should be given:
Answer: Sublingually
SL stands for sublingual, meaning the medication is placed under the tongue for rapid absorption through the oral mucosa.
Which dosage form is most appropriate when a patient is unconscious and cannot swallow?
Answer: Rectal suppository
Rectal suppositories can be administered to unconscious or vomiting patients since the route does not require swallowing or patient cooperation.
An ointment differs from a cream primarily because ointments are:
Answer: Oil-based and anhydrous
Ointments are oil-based (anhydrous) preparations that provide an occlusive barrier, while creams are emulsions containing both water and oil.
Which dosage form delivers medication systemically through intact skin?
Answer: Transdermal patch
Transdermal patches are designed to deliver a controlled dose of medication through the skin into the systemic circulation over an extended period.
Which of the following is classified as a parenteral route of administration?
Answer: Intramuscular
Parenteral routes bypass the gastrointestinal tract; intramuscular (IM) injection is a parenteral route, while oral, rectal, and sublingual routes all involve mucosal absorption.