Category 7 · 9–15% of the exam
Reduction of Risk Potential
Catching complications early — labs, procedures, and signs of deterioration.
Client need · Physiological Integrity
Reducing the likelihood that clients will develop complications or health problems related to existing conditions, treatments, or procedures.
Learning objectives
- ✓Interpret critical lab values and trends
- ✓Prepare clients for diagnostic tests and monitor afterward
- ✓Recognize post-op complications early
- ✓Perform focused system assessments (neurovascular, cardiac, respiratory)
3-day lesson plan
Day 1
Learn
Memorize core lab ranges (K, Na, glucose, Hgb, platelets, INR, ABGs).
Day 2
Apply
Practice post-op and procedure-complication questions.
Day 3
Check
Take the category quiz and a mixed lab drill.
Study checklist
Critical lab and clinical concepts
| Finding | Why it matters |
|---|---|
| Potassium abnormality | Can cause dangerous cardiac arrhythmias |
| Sodium abnormality | Can cause neurologic changes and seizures |
| Low glucose | Can cause confusion, seizures, or unconsciousness |
| Rising creatinine | May indicate worsening kidney function |
| Low platelets | May increase bleeding risk |
| Rising troponin | Can indicate myocardial injury |
| New ECG changes | May indicate an urgent cardiac problem |
Test plan related content
Content areas NCSBN lists for this category.
Changes / abnormalities in vital signsDiagnostic testsLaboratory valuesPotential for alterations in body systemsPotential for complications of diagnostic tests / treatments / proceduresPotential for complications from surgical procedures and health alterationsSystem-specific assessmentsTherapeutic procedures
Must know
- ●Use the lab's reference range, symptoms, trends, and context — not one number alone.
- ●Suspected transfusion reaction: stop the transfusion, keep IV access with compatible fluid per protocol, assess, and notify promptly.