Medical-Surgical Nursing
Core concepts
Medical-surgical nursing tests your ability to recognize and respond to deterioration across systems: cardiovascular (chest pain, heart failure, dysrhythmias), respiratory (asthma, COPD, pneumonia, embolism), neurological (stroke, seizures, increased intracranial pressure), renal and fluid-electrolyte balance, endocrine (diabetes, thyroid crisis), gastrointestinal, and perioperative care. Prioritize using ABC and early warning signs. Understand the rationale behind interventions - why elevate the head of the bed, why restrict fluids, why monitor potassium with diuretics. Postoperative priorities include airway, bleeding, pain, mobility, and infection surveillance; wound and drain assessment matter.
Traps
The frequent errors are (1) acting on a single data point rather than the trend; (2) missing subtle early signs of shock - restlessness, rising heart rate, narrowing pulse pressure; (3) confusing the interventions for different types of shock; and (4) choosing a comfort measure when a lifesaving one is needed. Another trap is assuming a stable-looking patient is safe: deterioration often begins with change in mentation or urine output. Also watch for questions where the correct action is to stop a therapy (for example, a transfusion reaction) before anything else.
Rule of thumb
Trend beats snapshot. Compare the current value with the previous ones; a falling blood pressure with a rising pulse is more alarming than either alone.
Worked example
A postoperative patient becomes restless, with heart rate rising from 80 to 118 and blood pressure falling from 130/80 to 100/70. Restlessness is an early sign of hypoxia or hypovolemia. The correct first action is to assess airway, breathing, and circulation, apply oxygen, and escalate - not to administer a sedative for restlessness.