🎯 High-Yield Points for This Topic
- Post-operative complications: always assess respiratory and cardiovascular status first when a surgical patient deteriorates suddenly
- Hyperkalaemia (K+ >6.5 mmol/L) is a cardiac emergency — ECG monitoring and urgent treatment take priority
- COPD patients: target SpO2 of 88–92%, not 95-100%, to avoid suppressing respiratory drive
- DKA management: insulin therapy can precipitate dangerous hypokalaemia — monitor potassium closely
- Absent bowel sounds with distension post-op signals possible ileus or obstruction — assess before intervening
[Infographic: NCK Medical-Surgical Nursing Key Concepts]
Practice Questions
['Question 1
A 58-year-old patient on a surgical ward develops sudden chest pain and shortness of breath 2 days after a hip replacement. Which complication should the nurse suspect FIRST?
✓ Correct: Pulmonary embolism
Sudden onset chest pain and dyspnoea in a post-operative orthopaedic patient is a classic presentation of pulmonary embolism, a known complication of immobility after hip surgery. This requires immediate assessment of oxygen saturation, vital signs, and urgent notification of the physician. Early recognition is life-saving.
Sudden onset chest pain and dyspnoea in a post-operative orthopaedic patient is a classic presentation of pulmonary embolism, a known complication of immobility after hip surgery. This requires immediate assessment of oxygen saturation, vital signs, and urgent notification of the physician. Early recognition is life-saving.
Question 2
A patient with chronic kidney disease has a serum potassium of 6.8 mmol/L. Which nursing action is the PRIORITY?
✓ Correct: Notify the physician immediately and prepare for ECG monitoring
A potassium of 6.8 mmol/L is severe hyperkalaemia and a medical emergency — it can cause fatal cardiac arrhythmias. The nurse must notify the physician immediately and prepare for continuous ECG monitoring and emergency treatment (e.g. calcium gluconate, insulin/dextrose). Delay can be fatal.
A potassium of 6.8 mmol/L is severe hyperkalaemia and a medical emergency — it can cause fatal cardiac arrhythmias. The nurse must notify the physician immediately and prepare for continuous ECG monitoring and emergency treatment (e.g. calcium gluconate, insulin/dextrose). Delay can be fatal.
Question 3
A patient recovering from abdominal surgery has not passed flatus or had a bowel movement for 3 days and reports abdominal distension. What should the nurse assess FIRST?
✓ Correct: Bowel sounds
Absent flatus and distension 3 days post-op suggests possible paralytic ileus or bowel obstruction. Auscultating bowel sounds is the priority assessment to determine if peristalsis has returned, guiding the next step (e.g. NG tube, ambulation, or surgical review).
Absent flatus and distension 3 days post-op suggests possible paralytic ileus or bowel obstruction. Auscultating bowel sounds is the priority assessment to determine if peristalsis has returned, guiding the next step (e.g. NG tube, ambulation, or surgical review).
Question 4
A patient with COPD has an oxygen saturation of 88% on room air. The physician orders oxygen therapy. Which target saturation should the nurse aim for?
✓ Correct: 88–92%
In COPD patients, the target oxygen saturation is typically 88–92%, not the higher targets used for most other patients. Over-oxygenation in chronic CO2 retainers can suppress the hypoxic drive to breathe and worsen respiratory failure.
In COPD patients, the target oxygen saturation is typically 88–92%, not the higher targets used for most other patients. Over-oxygenation in chronic CO2 retainers can suppress the hypoxic drive to breathe and worsen respiratory failure.
Question 5
A patient with a diagnosis of diabetic ketoacidosis (DKA) is receiving IV insulin. Which assessment finding requires IMMEDIATE nursing action?
✓ Correct: Serum potassium of 2.8 mEq/L
Insulin therapy in DKA drives potassium into cells, worsening existing hypokalaemia. A potassium of 2.8 mEq/L is dangerously low and risks life-threatening arrhythmias. The nurse must hold or adjust insulin per protocol and notify the physician for potassium replacement before continuing treatment.
Insulin therapy in DKA drives potassium into cells, worsening existing hypokalaemia. A potassium of 2.8 mEq/L is dangerously low and risks life-threatening arrhythmias. The nurse must hold or adjust insulin per protocol and notify the physician for potassium replacement before continuing treatment.
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Medical-Surgical Nursing questions on the NCK exam test your ability to apply pathophysiology to real clinical decisions — prioritising assessments, recognising emergencies, and knowing when to escalate care. Strong performance here depends on understanding why a finding matters clinically, not just memorising normal ranges.
[Clinical Concept Map: Medical-Surgical Nursing — Pathophysiology, Assessment, Priority Actions]
Frequently Asked Questions
How much of the NCK exam is Medical-Surgical Nursing? ⌄
For KRCHN candidates, Medical-Surgical Nursing is one of the most heavily weighted content areas across Paper 1, alongside fundamentals and specialised procedures. Exact weighting varies by cycle.
What's the best way to revise Medical-Surgical Nursing for NCK? ⌄
Organise revision by body system (cardiovascular, respiratory, renal, GI, endocrine, neurological) and pair each system's pathophysiology with practice questions immediately, rather than reading all theory before testing yourself.