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NCLEX Adult Health Practice Questions

Practice common adult health scenarios with safety-focused nursing decisions. The goal is not to memorize a letter pattern. Read the stem, identify the clinical problem, decide what matters most for safety, and compare every option against that priority.

These questions are original Free NCLEX Prep educational items, not official NCSBN questions. Use each rationale to review why the best option fits and why the alternatives are less appropriate. For stronger learning, answer before opening the explanation, then write one short takeaway from any item you miss.

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Do not chase perfect scores. Chase better reasoning.

Every reviewed mistake can become a safer decision on the next question.

Question 1 · moderate · Physiological Adaptation

A client with left-sided heart failure is dyspneic with crackles to the scapulae. Which position and action are best first?

  1. High Fowler and oxygen as ordered while assessing perfusion
  2. Trendelenburg to increase venous return
  3. Flat and force 1 L oral fluid
  4. Left lateral with the head down
Show answer & rationale
Best answer: A — High Fowler and oxygen as ordered while assessing perfusion

Upright positioning decreases venous return to a failing left ventricle and improves ventilation. Trendelenburg worsens pulmonary edema.

Question 2 · moderate · Physiological Adaptation

A client reports crushing substernal pain radiating to the left arm. What is the nurse’s first action among the following?

  1. Give a full meal so the client is not NPO
  2. Obtain a 12-lead ECG and support ABCs while activating the chest-pain protocol
  3. Start a strenuous walk to test the pain
  4. Apply heat to the sternum and reassess tomorrow
Show answer & rationale
Best answer: B — Obtain a 12-lead ECG and support ABCs while activating the chest-pain protocol

Suspected ACS needs immediate ECG, monitoring, and protocol care (oxygen if hypoxic, aspirin if ordered, etc.). Exercise testing is not the first move in acute pain.

Question 3 · moderate · Physiological Adaptation

A client with COPD has SpO2 86% on room air and is using accessory muscles. Which oxygen approach is appropriate?

  1. Withhold all oxygen because COPD clients must stay hypoxic
  2. Titrate oxygen to the prescribed saturation target while monitoring CO2 retention and work of breathing
  3. Place on a non-rebreather at 15 L and leave unattended for 3 hours
  4. Give oxygen only during meals
Show answer & rationale
Best answer: B — Titrate oxygen to the prescribed saturation target while monitoring CO2 retention and work of breathing

Hypoxemia is treated. Targets are individualized; unmonitored high-flow oxygen can worsen hypercapnia in some clients, but oxygen is not withheld in an emergency.

Question 4 · moderate · Physiological Adaptation

A client arrives with sudden right-sided weakness and aphasia. Which actions are indicated now? Select all that apply.

  1. Establish last known well time
  2. Keep NPO until swallow is screened
  3. Check glucose
  4. Give a full breakfast to test swallowing
  5. Prepare for urgent imaging per stroke protocol
Show answer & rationale
Best answer: ['A', 'B', 'C', 'E'] —

Time, glucose (hypoglycemia mimics stroke), NPO, and imaging are core. Feeding before a swallow screen risks aspiration.

Question 5 · moderate · Physiological Adaptation

A client with DKA has glucose 520 mg/dL, K+ 3.1 mEq/L, and is receiving IV insulin. What concern is highest regarding potassium?

  1. Insulin will drive potassium into cells and can worsen hypokalemia
  2. Insulin raises serum potassium, so this K+ is protective
  3. Potassium is irrelevant in DKA
  4. Give IV push KCl 40 mEq now
Show answer & rationale
Best answer: A — Insulin will drive potassium into cells and can worsen hypokalemia

Insulin shifts K+ intracellularly. Replete potassium per protocol before or while insulin runs if K+ is low. Never IV-push KCl.

Question 6 · moderate · Physiological Adaptation

A client develops wheezing, hypotension, and hives during an antibiotic infusion. What is the first medication action?

  1. IM epinephrine per protocol while stopping the infusion and supporting the airway
  2. Oral diphenhydramine only
  3. Finish the remaining antibiotic so the course is complete
  4. Apply lotion to the hives and reassess in 1 hour
Show answer & rationale
Best answer: A — IM epinephrine per protocol while stopping the infusion and supporting the airway

Anaphylaxis is treated with IM epinephrine first, plus stop the culprit and support ABCs. Antihistamines are adjuncts, not first-line for shock/airway.

Question 7 · moderate · Reduction of Risk Potential

The nurse notes continuous bubbling in the water-seal chamber of a chest-drainage system. What does this most likely indicate?

  1. Expected tidaling only
  2. An air leak until proven otherwise
  3. That the lung has fully re-expanded and the tube can be pulled now by the nurse
  4. That suction is off
Show answer & rationale
Best answer: B — An air leak until proven otherwise

Tidaling is expected. Continuous bubbling in the water seal suggests a leak in the system or a persistent pleural air leak. Nurses do not independently remove chest tubes.

Question 8 · moderate · Physiological Adaptation

Which instruction is essential for a client with a new AV fistula?

  1. Allow blood pressures and venipuncture on that arm to ‘exercise’ the vessel
  2. No BP, IVs, or venipuncture in the fistula arm; feel for a thrill daily
  3. Sleep with the arm under the body to keep it warm
  4. Wear a tight watch over the anastomosis
Show answer & rationale
Best answer: B — No BP, IVs, or venipuncture in the fistula arm; feel for a thrill daily

Protect the access. Absence of thrill is an emergency report. Constriction and sticks threaten the fistula.

Question 9 · moderate · Physiological Adaptation

A client vomits a large volume of bright blood and becomes diaphoretic with BP 80/48. Priority action?

  1. Offer a sandwich to settle the stomach
  2. Protect the airway, place large-bore IV access, and activate the hemorrhage pathway
  3. Send the client to walk off the nausea
  4. Give an oral NSAID for epigastric pain
Show answer & rationale
Best answer: B — Protect the airway, place large-bore IV access, and activate the hemorrhage pathway

Massive hematemesis is an ABC and volume emergency. NSAIDs worsen bleeding.

Question 10 · moderate · Physiological Adaptation

A client begins a generalized tonic-clonic seizure. Which action is correct?

  1. Insert a padded tongue blade
  2. Protect the head, turn to the side when possible, and time the seizure
  3. Restrain all four limbs tightly
  4. Pour water into the mouth to prevent dryness
Show answer & rationale
Best answer: B — Protect the head, turn to the side when possible, and time the seizure

Protect from injury, maintain airway by positioning, do not put objects in the mouth, do not restrain forcibly.

How to use this practice well

Start with one pass without notes. On review, separate a knowledge gap from a decision-making gap. If you did not know a fact, review that concept. If you knew the facts but chose the wrong action, identify the cue or priority rule you overlooked. This keeps practice focused on clinical reasoning instead of raw question volume.

Build a repeatable NCLEX routine

Mix focused practice with broader daily sets. Focused pages help repair a specific weakness; mixed sets test whether you can recognize the problem when the category is not announced. As your exam approaches, add timed work and longer sessions, but keep rationale review central. Accuracy, reasoning and consistency matter more than rushing through a large bank.

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