11–17% of the NCLEX-RN

NCLEX Physiological Adaptation

Acute and life-threatening illness: fluid and electrolyte imbalance, hemodynamics, respiratory and cardiac emergencies, sepsis, shock, burns and the client who is getting worse.

Practice Physiological Adaptation free10 questions a day free, no card

What it covers

  • Fluid and electrolyte imbalance
  • Hemodynamics and shock
  • Respiratory and cardiac emergencies
  • Sepsis and infection
  • Burns and trauma
  • Illness management and unexpected responses

Three ways candidates lose points

  • Reading silence as improvement. A wheezing client who goes quiet while getting worse is no longer moving air.
  • Choosing a diagnostic step while the client is failing. Oxygen and positioning come before the ECG when breathing is the problem.
  • Watching the wrong number. In burns, urine output tells you whether fluid resuscitation is working; in sepsis, lactate and mean arterial pressure do.

How to approach it

Name the condition first, then the one physiologic change that threatens life, then the action that addresses it now. Next Generation case studies are built this way: recognize cues, analyze them, form a hypothesis, then act and evaluate.

Free chapters to read

Openly licensed textbooks written by nursing faculty, free to read online. Read the sections your misses point to, not the whole book.

Try three real questions

From WriteSpan’s own bank, the same questions students practice with. Answer first; the explanation opens after.

Question 1Gastrointestinal: Diverticulitis

A nurse is assessing a client who reports fever of 38.9 degrees C, left lower quadrant pain rated 7 out of 10, nausea, and changes in bowel habits over the past three days. The client is 62 years old and has a history of diverticulosis. The abdomen is tender in the left lower quadrant with guarding. Which condition does the nurse most likely suspect?

The answer is B

Correct! Acute diverticulitis is inflammation or infection of diverticula — small outpouchings in the colonic wall that develop in areas of weakness. The sigmoid colon (left lower quadrant) is the most common location. Classic presentation: left lower quadrant pain (the "left-sided appendicitis"), fever, nausea, and altered bowel habits in an older client with known diverticulosis. CT scan of the abdomen with contrast is the diagnostic standard.

Clinical pearl: Clinical Pearl: Diverticulitis complications requiring surgical evaluation: abscess (perforation with localized collection), peritonitis (free perforation), fistula (colovesical fistula presents with pneumaturia — air in urine — or fecaluria), and obstruction. Hinchey classification guides surgical management. Uncomplicated diverticulitis: oral antibiotics and clear liquid diet for mild cases; IV antibiotics for moderate cases. Complicated diverticulitis: CT-guided drainage for abscess, emergency surgery for peritonitis.

Practice this category free
Question 2Renal: Rhabdomyolysis Treatment

A nurse is caring for a client with rhabdomyolysis from a crush injury. The creatine kinase is 42,000 units/L and the urine is dark brown. The provider has ordered IV fluids at 500 mL per hour. The nurse checks the urine output for the past hour and documents 35 mL. Which action is the most urgent priority?

The answer is D

Correct! In rhabdomyolysis, the target urine output is 200 to 300 mL per hour — far above the standard 30 to 50 mL per hour target. At 35 mL per hour with a creatine kinase of 42,000 and dark brown urine, the kidneys are at immediate risk for myoglobin-induced acute tubular necrosis. The provider must be notified urgently to increase the fluid rate. The current 500 mL per hour rate is clearly insufficient given the minimal urine output.

Clinical pearl: Clinical Pearl: Rhabdomyolysis fluid management monitoring: assess urine output every 30 to 60 minutes and adjust IV rate to maintain 200 to 300 mL per hour. Also monitor: urine color (progressing from cola-colored toward yellow indicates myoglobin clearance), serum CK (should trend down with treatment), serum potassium (hyperkalemia from cell lysis is life-threatening), and calcium (hypocalcemia from calcium entering necrotic muscle cells — calcium gluconate only for symptomatic hypocalcemia or ECG changes, not prophylactically).

Practice this category free
Question 3Respiratory: Mechanical Ventilation Weaning

A nurse is caring for a client who has been on mechanical ventilation for seven days following acute respiratory distress syndrome. The provider is planning to assess the client for weaning from mechanical ventilation. Which assessment findings would indicate the client is ready to attempt a spontaneous breathing trial?

The answer is C

Correct! Readiness for spontaneous breathing trial criteria include: the underlying cause of respiratory failure resolved, oxygen requirements reduced (FiO2 0.40 or less and PEEP 5 to 8 cmH2O or less), adequate mental status to protect the airway (alert and follows commands), hemodynamic stability without escalating vasopressors, and absence of recent neuromuscular blocking agents. These indicate the client may be able to breathe independently.

Clinical pearl: Clinical Pearl: Spontaneous breathing trial assessment: place the client on minimal ventilator support (pressure support of 5 cmH2O or T-piece with supplemental oxygen) for 30 to 120 minutes. Failure criteria: respiratory rate above 35, oxygen saturation below 90%, heart rate or blood pressure change of more than 20%, increased work of breathing (accessory muscle use, paradoxical breathing), or diaphoresis and anxiety. Rapid Shallow Breathing Index (RSBI) = respiratory rate divided by tidal volume in liters. RSBI below 105 predicts successful extubation.

Practice this category free

Find out where you stand today.

Fifteen questions across all eight categories, each one explained. No account needed.

Take the free practice testFree · or sign up for 10 a day