EXAM PREP PREMIUM BOARD-STYLE PRACTICE
QUESTIONS
This premium, high-yield document features comprehensive
multiple-choice practice questions with detailed diagnostic
rationales specifically tailored for modern nursing curricula and
board examinations. It provides exhaustive conceptual coverage
across critical care, advanced pharmacology, metabolic crises,
and complex medical-surgical nursing interventions. Designed
as a versatile, premium study asset, it empowers students to
master complex clinical scenarios, boost test performance, and
efficiently excel on high-stakes nursing assessments.
1. A client is admitted with an acute myocardial
infarction. Which cardiac biomarker is most
sensitive and specific for detecting early
myocardial injury?
A) CK-MB
B) Troponin I
C) Myoglobin
D) Brain natriuretic peptide (BNP)
Answer: B) Troponin I
Rationale: Troponin I is highly specific to cardiac
muscle and remains elevated for 1 to 2 weeks
following a myocardial infarction, making it the
gold standard for diagnosing acute coronary
,syndromes. CK-MB is less specific and returns to
baseline within 48 hours, while myoglobin rises
early but lacks cardiac specificity. BNP is used
primarily to diagnose and evaluate heart failure
severity.
2. A nurse prepares to administer a continuous
intravenous infusion of unfractionated heparin.
Which laboratory parameter must be closely
monitored to evaluate therapeutic efficacy?
A) Prothrombin time (PT)
B) International Normalized Ratio (INR)
C) Activated partial thromboplastin time (aPTT)
D) Platelet count
Answer: C) Activated partial thromboplastin time
(aPTT)
Rationale: The aPTT measures the intrinsic
pathway of coagulation and is specifically used to
monitor the therapeutic effectiveness of
unfractionated heparin infusions. PT and INR are
utilized to monitor oral warfarin therapy. Platelet
counts are monitored during heparin therapy to
screen for heparin-induced thrombocytopenia
(HIT), but they do not measure therapeutic clotting
efficacy.
,3. A client presents with a deep vein thrombosis
(DVT) in the left lower extremity. Which nursing
intervention is contraindicated in the initial
acute management phase?
A) Elevating the affected extremity above the
heart
B) Applying warm, moist compresses to the calf
C) Performing vigorous calf massage to reduce
stiffness
D) Monitoring the client for sudden onset of
shortness of breath
Answer: C) Performing vigorous calf massage to
reduce stiffness
Rationale: Massaging an active deep vein
thrombosis is strictly contraindicated because the
mechanical force can dislodge the thrombus,
converting it into a life-threatening pulmonary
embolism. Elevation promotes venous return,
warm compresses reduce localized inflammation,
and monitoring for dyspnea catches early signs of
a pulmonary embolism.
4. A nurse reviews the arterial blood gas (ABG)
results of a client with severe chronic
obstructive pulmonary disease (COPD): pH 7.32,
, PaCO2 56 mmHg, HCO3 28 mEq/L. How should
the nurse interpret these findings?
A) Uncompensated respiratory alkalosis
B) Partially compensated respiratory acidosis
C) Fully compensated metabolic acidosis
D) Uncompensated metabolic alkalosis
Answer: B) Partially compensated respiratory
acidosis
Rationale: The pH is low (<7.35), indicating
acidosis. The PaCO2 is elevated (>45 mmHg),
pointing to a respiratory origin. The HCO3 is also
elevated (>26 mEq/L), demonstrating that the
kidneys have begun retaining bicarbonate to
normalize the pH, indicating partial compensation
since the pH is not yet within normal limits.
5. A client is prescribed a liquid iron supplement
for iron deficiency anemia. Which instruction
should the nurse include in the client's
discharge teaching?
A) Take the medication with milk to decrease
gastric irritation.
B) Drink the medication through a straw to
prevent tooth discoloration.
C) Stop taking the medication if stools turn dark