Medical-Surgical Nursing
Medical-surgical nursing tests your ability to recognise deterioration early and to connect pathophysiology to assessment findings and interventions. Anchor your revision in fluid and electrolyte balance (signs of hypovolaemia and overload, potassium and sodium imbalances and their cardiac and neurological effects), acid–base interpretation (read pH first, then PaCO₂, then bicarbonate), and shock (hypovolaemic, cardiogenic, distributive, obstructive - all share inadequate tissue perfusion, shown by altered mentation, tachycardia, cool or warm skin, oliguria, and falling blood pressure as a late sign).
Know the major systems: cardiovascular (angina versus myocardial infarction, heart failure with left-sided pulmonary and right-sided systemic congestion, anticoagulant monitoring); respiratory (asthma, COPD, pneumonia, pulmonary embolism, oxygen delivery devices); neurological (stroke - time-critical, use a validated screen; raised intracranial pressure - declining consciousness, unequal pupils, Cushing's triad); endocrine (diabetic ketoacidosis versus hypoglycaemia, thyroid storm, adrenal crisis); renal (acute kidney injury stages, dialysis access care); gastrointestinal and musculoskeletal (bowel obstruction, postoperative complications, traction and cast care, fat embolism).
Traps: confusing early and late signs (bradycardia and hypertension in raised ICP are late; hypotension in shock is late); picking a treatment before stabilising airway and circulation; and options that sound sophisticated but delay time-critical action. Watch for questions where a chronic condition (e.g., COPD) changes the 'normal' baseline - a 'normal' oxygen saturation may be abnormal for that client.
Rule of thumb - trend over single value: a change in condition across observations matters more than one reading. Worked example: a client with a fractured femur becomes confused and breathless with a petechial rash - suspect fat embolism and act urgently, rather than attributing confusion to pain medication.