Evaluation of Primary Hypertension
Patient History
- The American Heart Association recommends documenting the duration of hypertension, previous BP levels, and any prior antihypertensive medications including reasons for discontinuation or intolerance in patients with suspected primary hypertension 1
- The American College of Cardiology suggests inquiring about current medications and over-the-counter drugs that can elevate BP, including NSAIDs, decongestants, oral contraceptives, and corticosteroids in patients with suspected primary hypertension 1, 2
- The American Heart Association recommends assessing personal history, including myocardial infarction, heart failure, stroke, transient ischemic attacks, diabetes, dyslipidemia, chronic kidney disease, and smoking status in patients with suspected primary hypertension 1
- The American College of Cardiology suggests assessing lifestyle factors, including dietary sodium intake, alcohol consumption, physical activity level, and recent weight changes in patients with suspected primary hypertension 1, 2
- The presence of lifestyle factors favoring higher BP, such as weight gain, high-sodium diet, decreased physical activity, job changes with increased stress, or excessive alcohol consumption, supports primary hypertension 2
- A gradual increase in BP with slow rate of rise also suggests essential hypertension 2
Symptoms Suggesting Secondary Hypertension
- The American Heart Association recommends investigating for secondary causes of hypertension in patients with symptoms such as muscle weakness, tetany, cramps, or arrhythmias, which may suggest hypokalemia from primary aldosteronism 1
- The American College of Cardiology suggests investigating for secondary causes of hypertension in patients with symptoms such as sweating, palpitations, and frequent headaches, which may suggest pheochromocytoma 1
- The American Heart Association recommends assessing for renal disease, including flash pulmonary edema, hematuria, nocturia, or history of urinary tract infections, which may suggest renal artery stenosis or renal parenchymal disease 1
- The American College of Cardiology suggests assessing for sleep apnea, including snoring and daytime sleepiness, which may indicate obstructive sleep apnea 1
Historical Features Distinguishing Primary from Secondary Hypertension
- The American Heart Association recommends considering primary hypertension in patients with a gradual BP increase with slow rate of rise 2
- The American College of Cardiology suggests considering secondary hypertension in patients with an age of onset <30 years or >55 years, abrupt onset or sudden worsening of previously controlled BP, severe hypertension (>180/120 mmHg) or resistant hypertension 2
- The American Heart Association recommends considering target organ damage disproportionate to duration/severity in patients with suspected secondary hypertension 3
Perinatal and Developmental History
- The American Academy of Pediatrics recommends obtaining perinatal information, including maternal hypertension during pregnancy, gestational age, birth weight, and neonatal complications, as low birth weight is associated with later hypertension 4
Psychosocial History
- The American Academy of Pediatrics recommends documenting stress, depression, anxiety, and adverse childhood experiences, as these are associated with hypertension development 4
Blood Pressure Classification and Management Targets
Blood Pressure Stage Classification
- In adults, blood pressure is categorized as Normal (<120/80 mmHg), Elevated (120‑129/<80 mmHg), Stage 1 (130‑139/80‑89 mmHg), or Stage 2 (≥140/≥90 mmHg) according to the American College of Cardiology/American Heart Association (ACC/AHA) guidelines【5】【6】【7】.
Antihypertensive Medication Side‑Effect Profile
- Common adverse effects to document for antihypertensive therapy include dizziness, fatigue, cough (particularly with ACE inhibitors), ankle edema (with calcium‑channel blockers), and electrolyte disturbances; recognizing these helps assess tolerability and adherence【8】.
Blood Pressure Treatment Targets
- The ACC/AHA recommends a target blood pressure of <130/80 mmHg for most adults, and specifically for patients with diabetes or chronic kidney disease, whereas the older threshold of <140/90 mmHg may be used for lower‑risk individuals【5】【6】.