A nurse is preparing to reconstitute a vial of powdered medi… | 마이메르시 MyMerci
Fundamentals
문제

A nurse is preparing to reconstitute a vial of powdered medication for intramuscular injection. Which action should the nurse take first when reconstituting the medication?

해설
The nurse must first verify the medication label and expiration date to ensure safety and effectiveness, aligning with the 'rights of medication administration'. Other options describe incorrect techniques that can compromise medication integrity or safety.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question tests the foundational principle of medication safety and the correct procedural steps for reconstituting a powdered medication. Before performing any technical step in medication preparation, the nurse must first ensure they have the correct and safe medication. This is the first and most critical step in the nursing process and aligns with the Key Point! Rights of Medication Administration, specifically the right drug, right dose, and right time (which includes checking expiration).

Answer Rationale: The correct answer is to Check the medication label and expiration date before beginning reconstitution. This action is the first step because it prevents medication errors at the source. Administering an expired or incorrect medication can lead to therapeutic failure or patient harm. This step is non-negotiable and precedes any physical manipulation of the vial or diluent.

Distractor Analysis: Watch out for confusion! The incorrect options describe common but erroneous techniques that compromise medication integrity or safety.
  • Option 1: Injecting diluent rapidly can create excessive pressure, potentially forcing medication out of the vial or creating aerosols, and does not ensure proper mixing.
  • Option 2: Key Point! Shaking a vial vigorously is generally contraindicated for reconstituted medications, especially proteins, vaccines, or suspensions, as it can cause foaming, denature proteins, or create an uneven mixture. The correct technique is to gently roll or invert the vial.
  • Option 3: Adding an incorrect volume of diluent alters the drug concentration, leading to an incorrect dose. The nurse must follow the manufacturer's instructions precisely.
Related Concepts: This question integrates aseptic non-touch technique (ANTT) principles, the importance of following manufacturer-specific reconstitution instructions, and the overarching goal of patient safety. The "first step" in any nursing procedure involving medication almost always involves verification and assessment. Concept Summary
ConceptDescriptionNursing Implication
Rights of Medication AdministrationRight patient, drug, dose, route, time, documentation, reason, response.Checking label/expiration addresses Right Drug and Right Time.
ReconstitutionMixing a powdered drug with a diluent (sterile water, saline, bacteriostatic water) to create a solution.Follow exact volume and technique per drug insert. Gently mix.
Medication SafetyProcedures to prevent errors, including verification, barcode scanning, and double-checks.The first safety check is visual verification before manipulation.
Intramuscular (IM) InjectionInjection into muscle tissue (e.g., deltoid, ventrogluteal).Reconstituted drugs often have specific stability times; administer promptly.
Side-by-Side Comparison!
Correct Reconstitution PracticeIncorrect Practice to Avoid
1. Verify drug, dose, expiration date FIRST.1. Beginning technical steps before verification.
2. Use the exact diluent type and volume specified.2. Using the wrong diluent or an incorrect volume.
3. Inject diluent gently down the side of the vial.3. Injecting diluent rapidly directly onto the powder cake.
4. Gently roll or invert vial to mix.4. Shaking the vial vigorously.
5. Label the vial with time, date, concentration, and initials if not used immediately.5. Failing to label a multi-dose or time-sensitive reconstituted drug.
Anatomy, Physiology & Pharmacology Points
  • Pharmacology: Many antibiotics (e.g., penicillin G), vaccines, and biologic drugs are supplied as lyophilized (freeze-dried) powders to increase stability. Reconstitution activates the drug.
  • Microbiology & Asepsis: The rubber stopper of the vial must be cleansed with an antiseptic (e.g., 70% alcohol) before puncturing to maintain sterility and prevent infection.
  • Chemistry: Vigorous shaking can introduce excess air (cause foaming) and potentially shear or denature large protein molecules, reducing drug efficacy.
Memory Tips
  • Acronym: VIAL FIRST
    Verify label & expiration
    Inspect vial integrity
    Aseptically clean stopper
    Label if needed later
    ---
    Follow volume instructions
    Inject diluent gently
    Roll, don't shake
    Stability clock starts now
    Think safety always
  • Think: "Check before you inject!" The first action is always verification, not technique.
High-Frequency NCLEX Topics This is a High Yield topic. The NCLEX-RN frequently tests:
  1. The first or priority action in a nursing skill (often assessment/verification).
  2. Correct technique for medication preparation (IM, IV, subcutaneous).
  3. Application of the Rights of Medication Administration in a scenario.
  4. Identifying errors in a described procedure.
Watch Out for Question Variations!
  • Priority Change: "The nurse is about to reconstitute a medication. The client states they are allergic to penicillin. What should the nurse do first?" (Answer: Stop and re-verify the medication order and allergy history before any further action.)
  • Error Identification: "Which action by the nursing student requires intervention by the nurse?" (The student is seen shaking a vial of reconstituted vaccine vigorously.)
  • Pharmacology Integration: "A nurse reconstitutes a vial of medication. The label states the solution is stable for 24 hours at room temperature. When should the nurse label the vial with the discard time?" (Answer: Immediately after reconstitution.)

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: You are preparing to administer Ceftriaxone 1g IM to a patient with cellulitis. The medication arrives from the pharmacy as a powdered vial and a separate vial of sterile water for injection.

Nursing Intervention Strategy:
  1. Assessment & Verification: Before touching the vials, perform the first safety check: Check the medication administration record (MAR) against the vial label (drug name, dose, expiration date). Confirm the patient's identity using two identifiers.
  2. Preparation: Perform hand hygiene. Aseptically cleanse the rubber stoppers of both vials with alcohol swabs. Draw up the exact volume of diluent (e.g., 2.1 mL for 1g Ceftriaxone to make a 350 mg/mL solution).
  3. Reconstitution: Hold the powdered vial steady. Inject the diluent slowly down the inner side of the vial. Withdraw the needle. Gently roll the vial between your palms until the powder is completely dissolved and the solution is clear. Do not shake.
  4. Administration & Documentation: Draw up the correct dose into a new syringe. Administer via IM injection in the appropriate site (e.g., ventrogluteal). Document the administration, including site, and monitor for therapeutic effect and adverse reactions.
Patient Safety and Precautions:
  • Contraindications: Do not administer if the reconstituted solution is discolored or contains particulate matter.
  • Medication Cautions: Some reconstituted drugs (e.g., insulin NPH) are suspensions and require gentle rolling to re-mix before each draw, not just after initial reconstitution.
  • Key Monitoring: Observe for signs of anaphylaxis (especially with antibiotics) and injection site reactions.
Nursing Procedure & Medication Flow Step-by-Step: Reconstituting a Powdered Vial 1. Verify order, patient, and medication (3 checks).
2. Gather equipment: Medication vial, correct diluent, alcohol swabs, appropriate syringes/needles.
3. Cleanse stoppers aseptically.
4. Draw up prescribed diluent volume into a syringe.
5. Inject diluent into medication vial gently.
6. Mix gently by rolling. Inspect for complete dissolution.
7. Label vial with drug, concentration, time/date reconstituted, and your initials if not used immediately.
8. Draw up prescribed dose into administration syringe.
9. Administer via prescribed route within the stability window.

Medication Stability: The "clock starts ticking" once the powder is reconstituted. Know the stability duration (e.g., room temp vs. refrigerated) and discard any unused portion after that time. A Word from Your Senior Nurse "Nursing is not just about carrying out physician orders — it's about being the frontline guardian for your patients! In clinical practice, taking that extra two seconds to double-check the label and expiration date is a non-negotiable habit that prevents errors. I've seen near-misses avoided because a nurse caught an expired vial or a look-alike sound-alike drug. When studying for your boards, don't just memorize the steps — internalize the reason behind each one. Why do we roll instead of shake? Why check expiration first? Connecting that 'why' to patient safety will make you a vigilant and confident nurse, both on the NCLEX and at the bedside."

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