Hypertension is the single highest-yield topic on the FNP boards. You can almost guarantee 6 to 10 questions on it. And yet, the guidelines are messier than candidates realize. You'll hear references to JNC 8, ACC/AHA 2017, and sometimes ESC/ESH. Which one does the exam want?
Short answer: the AANP and ANCC are mostly aligned with the ACC/AHA 2017 guidelines now, but JNC 8 still appears, especially in older review materials. You need to know both, and you need to know where they disagree.
Hypertension on the boards isn't about memorizing one chart. It's about knowing the framework underneath all the charts.
The Definitions
ACC/AHA 2017 lowered the threshold for hypertension significantly. The current definitions:
- Normal: <120/80
- Elevated: 120–129 systolic and <80 diastolic
- Stage 1 hypertension: 130–139 / 80–89
- Stage 2 hypertension: ≥140 / ≥90
- Hypertensive crisis: >180 / >120 with or without end-organ damage
JNC 8 (2014) used 140/90 as the diagnostic threshold for the general population under 60, and 150/90 for adults 60 and older. The exam may still use either framework — read each question carefully to see which year's threshold is in play.
The First-Line Drugs
This is where the exam loves to trap you. The first-line agents depend on the patient's race and comorbidities.
General non-Black population, no comorbidities: ACE inhibitor, ARB, thiazide diuretic, or calcium channel blocker. Any of the four is acceptable.
Black population, no comorbidities: Thiazide diuretic OR calcium channel blocker first. Not ACE/ARB as monotherapy.
Patient with diabetes or chronic kidney disease: ACE inhibitor or ARB, regardless of race. This protects the kidney.
Patient with heart failure (HFrEF): ACE/ARB + beta blocker + diuretic. This is guideline-directed medical therapy.
Patient with known CAD: Beta blocker + ACE/ARB.
Test Pearl: Beta blockers are NOT first-line for uncomplicated hypertension. They're indicated when the patient has a specific compelling reason — CAD, heart failure, arrhythmia. Pick beta blocker only when you see one of those.
The Lifestyle Modifications
Don't underestimate these on the exam. The first intervention for stage 1 hypertension in a low-risk patient is often lifestyle modification, not medication. Memorize:
- DASH diet
- Sodium < 2300 mg/day (ideally 1500)
- Weight loss if BMI > 25
- Moderate alcohol — <2 drinks/day men, <1/day women
- Aerobic exercise > 150 min/week
- Smoking cessation
Lab Workup at Diagnosis
When a patient is newly diagnosed with hypertension, the exam wants to know what you order:
- CBC
- BMP (Na, K, Cl, BUN, Cr, glucose)
- Lipid panel
- TSH
- Urinalysis (looking for protein, microscopic hematuria)
- EKG (baseline)
- HbA1c
When to Add a Second Drug
If a patient is at stage 2 (≥140/90) at diagnosis, start with two agents from different classes. If a patient on a single agent isn't at goal after 1 month, add a second agent. The exam will test this timing.
Hypertensive Urgency vs. Emergency
This distinction shows up constantly. Urgency = BP very elevated but no acute end-organ damage. Treat over hours to days, often as outpatient. Emergency = BP very elevated WITH acute end-organ damage (encephalopathy, stroke, pulmonary edema, MI). Treat with IV agents in the hospital, with goal of lowering MAP by 25% in the first hour.
The deciding question is: are there symptoms of end-organ damage? That single question routes the patient.
What to Memorize Cold
- The ACC/AHA stage thresholds.
- The first-line classes (and which is wrong for which patient).
- The compelling indications that change first-line choice.
- Lab workup at diagnosis.
- Urgency vs. emergency.
Hypertension is testable. It's memorable. Make it your easy points.