These NCLEX-RN practice questions target pharmacology — including CrCl, Creatinine Clearance, DI, DDAVP. The complete NCLEX-RN deck holds 1030 flashcards, 120 of them dedicated to this topic. Study the free samples below, then unlock the whole collection for a one-time $7.
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A 78-year-old patient with a Creatinine Clearance (CrCl) of 35 mL/min is prescribed Digoxin. Which pharmacokinetic phase is most clinically significant in this scenario, and what is the primary nursing priority?
Show answer →Excretion. Digoxin is primarily excreted unchanged by the kidneys. A decreased CrCl indicates renal impairment, which increases the drug's half-life and the risk for toxicity. Priority: Monitor serum digoxin levels (therapeutic range: 0.5–2 ng/mL) and potassium levels, as hypokalemia potentiates digoxin toxicity. NCLEX Strategy: NCSBN often tests renal function (BUN/Creatinine) in relation to drugs with narrow therapeutic indices. Distractor: Metabolism in the liver is less significant for Digoxin than renal excretion.
A patient with atrial fibrillation is receiving Verapamil. What gastrointestinal side effect should the nurse proactively manage, and what beverage is strictly contraindicated?
Show answer →Management: Increase fiber and fluid intake to prevent constipation. Contraindication: Grapefruit juice. Rationale: Verapamil (a non-dihydropyridine CCB) slows GI motility. Grapefruit juice inhibits CYP3A4 metabolism, leading to toxic drug levels and severe bradycardia/hypotension. NCLEX Tip: Verapamil and Diltiazem are used for rate control; Nifedipine is used for BP.
A client with a new DVT is started on both IV Heparin and oral Warfarin. What is the clinical rationale for this dual therapy?
Show answer →Warfarin has a slow onset, taking 48-72 hours to affect clotting factors and up to 5 days for full therapeutic effect. Heparin provides immediate anticoagulation to prevent clot extension. They are overlapped (bridged) until the INR is therapeutic (2.0-3.0) for at least 24 hours. Strategy: NCLEX tests the why behind bridging to ensure nurses understand pharmacokinetics.
A patient with Diabetes Insipidus (DI) is receiving desmopressin (DDAVP). Which assessment finding most urgently indicates a need to hold the medication and notify the provider?
Show answer →Signs of water intoxication or dilutional hyponatremia: headache, confusion, drowsiness, or a serum sodium level <135 mEq/L. Desmopressin increases water reabsorption; excessive retention leads to cerebral edema and potential seizures. NCLEX Tip: While decreased urine output and increased specific gravity are expected therapeutic effects, mental status changes represent a critical safety risk. Monitor daily weights and strict intake/output.
A client taking Valproic acid for mood stabilization reports severe abdominal pain radiating to the back and persistent nausea. Which lab tests should the nurse expect the provider to order?
Show answer →Labs: Amylase and Lipase (to check for Pancreatitis) and Liver Function Tests (LFTs) (to check for Hepatotoxicity). Rationale: Valproic acid has Black Box Warnings for life-threatening pancreatitis and hepatic failure. NCLEX Tip: Also monitor Platelet counts due to the risk of thrombocytopenia and prolonged bleeding time. Clinical Pearl: While hair loss (alopecia) is a common side effect, it is not the priority over organ-threatening complications.
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Try 30 free NCLEX-RN cards firstThe full NCLEX-RN deck contains 1030 flashcards, and 120 of them focus on pharmacology. This page shows 5 free samples.
Our NCLEX-RN deck dedicates 120 of 1030 cards (12%) to pharmacology — always cross-check the official NCSBN exam outline for the current blueprint weighting.
Yes — the samples on this page are free, and the NCLEX-RN preview page has 30 more free cards. Full access to all 1030 cards is a one-time $7.
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