Medical-Surgical Nursing
Core concepts
Medical-surgical nursing rewards systematic assessment and safe intervention. Know ABCs, level of consciousness, vital sign changes, pain assessment, fluid and electrolyte balance, acid-base basics, medication safety, infection control, and perioperative care. Common content includes cardiovascular disorders, respiratory failure, diabetes, renal disease, gastrointestinal bleeding, neurologic changes, and oncology care. Always link pathophysiology to assessment findings: for example, left-sided heart failure causes pulmonary congestion, while right-sided failure causes peripheral edema and jugular venous distention.
Traps to watch
Questions often present a stable-looking client with one dangerous finding. A falling blood pressure with rising heart rate may signal shock before other signs appear. Do not give potassium by intravenous push; verify renal function and use an infusion pump. In digoxin therapy, monitor for nausea, visual changes, and bradycardia; hypokalemia increases toxicity risk. In respiratory items, do not delay oxygen or positioning for a client with severe distress. In postoperative care, remember that early ambulation and breathing exercises prevent complications, but safety and pain control come first.
Worked rule of thumb
When a laboratory value is abnormal, ask: is this value dangerous now, and what action prevents harm? For example, a potassium level of 6.8 mEq/L with peaked T waves requires immediate ECG monitoring and treatment orders, not simply dietary teaching. For any medication question, apply the rights of administration and check the client’s response.
Exam approach
Identify the system involved and the earliest sign of deterioration. Choose assessment or immediate safe intervention before teaching. Eliminate options that are invasive without indication or that delay treatment of airway, breathing, or circulation problems.