Preparation And Routes - NAPLEX

1. What do the otic abbreviations AD, AS, and AU mean?

   AD right ear; AS left ear; AU both ears. Derived from Latin, these terms indicate aural administration to the right, left, or both ears for effective ear therapy.

2. Identify the common route for a transdermal patch intended for systemic delivery.

   Transdermal (TD). Patches allow drug diffusion through skin into systemic circulation, designed for prolonged, controlled release over hours or days.

3. What is the standard abbreviation for the transdermal route of administration?

   TD. This abbreviation describes patches applied to skin for slow, continuous absorption into the bloodstream, providing steady systemic levels.

4. Which dosage form should generally not be crushed due to altered release: immediate-release tablet or extended-release tablet?

   Extended-release tablet. Design controls drug release over time, and crushing disrupts this mechanism, potentially leading to dose dumping or reduced efficacy.

5. Which route is commonly used for local effect in the eye: ophthalmic or oral?

   Ophthalmic. Formulations like drops or ointments target the eye directly, providing localized treatment for ocular conditions without systemic oral effects.

6. What is the standard abbreviation for the vaginal route of administration?

   PV (per vaginam). Derived from Latin 'per vaginam,' this abbreviation denotes insertion into the vagina for local or systemic effects via mucosal absorption.

7. What is the standard abbreviation for the topical (dermal) route of administration?

   TOP. This abbreviation is used for applications to the skin surface, primarily for local effects without significant systemic absorption.

8. What is the standard abbreviation for the intravenous route of administration?

   IV. This abbreviation represents direct injection into a vein, providing immediate systemic distribution and 100% bioavailability.

9. What is the standard abbreviation for the buccal route of administration?

   BUCC. This abbreviation indicates administration between the cheek and gum, allowing for mucosal absorption and often used for localized or systemic effects.

10. What is the intended route for a metered-dose inhaler (MDI)?

    Inhalation (pulmonary). MDIs deliver aerosolized medication directly to the lungs via inhalation, optimizing pulmonary absorption for respiratory conditions.

11. What is the standard abbreviation for the intramuscular route of administration?

    IM. This abbreviation signifies injection into muscle tissue, suitable for drugs requiring sustained release or those irritating to veins.

12. What is the standard abbreviation for the subcutaneous route of administration?

    SC (or SubQ). These abbreviations refer to injection beneath the skin into fatty tissue, ideal for slow absorption and self-administration.

13. What is the standard abbreviation for the ophthalmic route of administration?

    OPH (or OU/OD/OS for eyes specified). These abbreviations are standard for eye drops or ointments, with specifics for right, left, or both eyes to ensure precise ocular delivery.

14. What is the standard abbreviation for the intranasal route of administration?

    IN (intranasal). This abbreviation specifies administration into the nasal cavity, facilitating quick absorption through nasal mucosa for systemic or local action.

15. Which oral dosage form is designed for rapid systemic absorption through oral mucosa: SL tablet or enteric-coated tablet?

    SL tablet. Placement under the tongue allows dissolution and absorption through highly vascular mucosa, providing quicker onset than enteric-coated forms which delay release.

16. What is the standard abbreviation for the otic route of administration?

    OTIC (or AU/AD/AS for ears specified). These abbreviations are used for ear drops, with options to specify right, left, or both ears for localized auditory canal treatment.

17. What is the standard abbreviation for the oral route of administration?

    PO (per os, by mouth). Derived from Latin 'per os' meaning by mouth, this abbreviation is universally used for medications administered orally to ensure systemic absorption via the gastrointestinal tract.

18. What is the standard abbreviation for the inhalation route of administration?

    INH. This abbreviation indicates delivery via breathing in, targeting the lungs for local or systemic effects with rapid onset.

19. What is the standard abbreviation for the sublingual route of administration?

    SL. This abbreviation denotes placement under the tongue for rapid absorption through the oral mucosa, bypassing first-pass metabolism.

20. What is the standard abbreviation for the rectal route of administration?

    PR (per rectum). Derived from Latin 'per rectum,' this abbreviation is for suppositories or enemas, allowing absorption via rectal mucosa and partial bypass of first-pass metabolism.

21. What route of administration bypasses first-pass hepatic metabolism: IV or PO?

    IV. Direct bloodstream entry avoids hepatic first-pass metabolism, unlike oral administration which passes through the liver before systemic circulation.

22. Which route is preferred for fastest onset in an emergency: IV or IM?

    IV. Direct venous injection ensures immediate bioavailability and rapid therapeutic effects, critical in emergencies compared to slower muscular absorption.

23. Which dosage form is intended to resist gastric acid and dissolve in the intestine: enteric-coated tablet or chewable tablet?

    Enteric-coated tablet. Special coating protects against stomach acid, ensuring disintegration in the alkaline intestinal environment for targeted delivery.

24. What is the standard abbreviation for the intradermal route of administration?

    ID. This abbreviation denotes injection into the dermal layer of skin, commonly used for diagnostic tests like tuberculin screening.

25. What do the ophthalmic abbreviations OD, OS, and OU mean?

    OD right eye; OS left eye; OU both eyes. Rooted in Latin, these terms specify ocular administration to the right, left, or both eyes for targeted treatment of eye conditions.

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