NCLEX-RN, Medical exams, 9–15%

Reduction of Risk Potential

Reducing the chance that clients develop complications from existing conditions, treatments, or procedures: vital signs, laboratory values, diagnostic tests, and care before and after procedures.

Position: 7 of 8 client needs categories
Published weighting: 9–15% in the official framework
Topics covered: 4 topics in this guide

What is covered

Topics inside this client needs category.

These topics describe the scope students most often review for this part of NCLEX-RN. Treat them as a study checklist rather than an exhaustive list of what a single exam form can sample.

Laboratory values: Normal ranges for electrolytes, blood counts, coagulation studies, and arterial blood gases.
Diagnostic tests and procedures: Preparation, consent, and care after procedures such as cardiac catheterization and paracentesis.
Changes in vital signs: Recognizing early deterioration and when to escalate.
Potential complications of surgery: Hemorrhage, infection, thrombosis, and respiratory complications after surgery.

Study tips

How to practice Risk Reduction.

Section-specific guidance that follows from how this material is usually tested.

Memorize the critical laboratory values first, then the full normal ranges.
For every procedure, learn the one complication to watch for afterward.
Practice spotting the subtle early change that signals deterioration.

Where this fits

Reduction of Risk Potential is 7 of 8 client needs categories in the NCLEX-RN guide, and it carries a published weighting of 9–15% in the official framework. Use the full guide to balance it against everything else you have to review.

Back to the NCLEX-RN guide Official exam information

Sample Risk Reduction questions

Practice questions, not yet expert-reviewed

Original practice questions written to the published framework for this section. No expert has reviewed them, and they are not taken from any official exam. Try each one before you open the answer.

Question 1Foundational
What is the normal range of serum potassium in adults?
1. A135 to 145 mEq/L
2. B8.5 to 10.5 mg/dL
3. C3.5 to 5.0 mEq/L
4. D1.5 to 2.5 mEq/L
Show answer
Answer: C. 3.5 to 5.0 mEq/L
Normal serum potassium is about 3.5 to 5.0 mEq/L. 135 to 145 mEq/L is the sodium range, and 8.5 to 10.5 mg/dL is total calcium.
Key insight: Potassium runs 3.5 to 5.0 mEq/L.
Question 2Intermediate
After a cardiac catheterization through the femoral artery, which finding should the nurse report immediately?
1. AA small bruise around the dressing
2. BA cool, pale foot on the affected leg
3. CMild tenderness at the insertion site
4. DThe client asks for something to drink
Show answer
Answer: B. A cool, pale foot on the affected leg
A cool, pale extremity suggests arterial occlusion and loss of perfusion and must be reported at once. Mild tenderness and a small bruise are expected, and fluids help clear the contrast dye.
Key insight: Check the pulse, color, and temperature of the limb below a femoral puncture.
Question 3Intermediate
What does an arterial blood gas with a pH of 7.30, a PaCO2 of 55 mm Hg, and a bicarbonate of 24 mEq/L show?
1. ARespiratory acidosis
2. BMetabolic acidosis
3. CRespiratory alkalosis
4. DMetabolic alkalosis
Show answer
Answer: A. Respiratory acidosis
The pH is low (acidosis) and the PaCO2 is high, moving in the opposite direction from the pH, which points to a respiratory cause. The bicarbonate is normal, so the kidneys have not yet compensated.
Key insight: When pH and PaCO2 move in opposite directions, the problem is respiratory.
Question 4Foundational
Which finding most often signals the early stage of deterioration in a hospitalized client?
1. AA falling body temperature
2. BImproved appetite
3. CA steady blood pressure
4. DA rising respiratory rate
Show answer
Answer: D. A rising respiratory rate
An increasing respiratory rate is one of the earliest and most sensitive signs that a client is getting worse, often appearing before a drop in blood pressure.
Key insight: Watch the respiratory rate for early deterioration.
Question 5Advanced
Which intervention best prevents deep vein thrombosis in a client after major surgery?
1. ARestricting fluids
2. BMassaging the calves
3. CEarly ambulation and leg exercises
4. DKeeping the knees bent on a pillow
Show answer
Answer: C. Early ambulation and leg exercises
Early ambulation, leg exercises, compression devices, and prescribed anticoagulants promote venous return. Pillows under the knees slow it, fluid restriction thickens the blood, and calf massage can dislodge a clot.
Key insight: Get clients moving early; never massage a calf.

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Reduction of Risk Potential