Blood Pressure Monitoring and Medication Adjustment

Initial Monitoring and Adjustment

The British Journal of Pharmacology recommends monitoring blood pressure and renal function 1-2 weeks after initiation of ACE inhibitors and ARBs, and 1-2 weeks after each dose titration, then every 4 months once stable 1
Blood chemistry should be monitored "frequently and serially until creatinine and potassium have plateaued" according to the British Journal of Pharmacology 1
For diuretics, monitor electrolytes and renal function 1-2 weeks after initiation, and recheck 1-2 weeks after any dose change 1, 3
The British Journal of Pharmacology suggests that aldosterone antagonists require intensive monitoring due to hyperkalemia risk, with checks at baseline, 1 week, then at 1, 2, 3, 6 months 1

The target blood pressure control should be achieved within 3 months of initiating or adjusting therapy, with a minimum target of <140/90 mmHg for all hypertensive patients 2, 3
Aim for at least 20/10 mmHg reduction from baseline, and target BP is <130/80 mmHg for most patients with hypertension 2, 4

The British Journal of Pharmacology recommends monitoring every 4-6 months for patients on ACE inhibitors/ARBs, every 6 months for general stable hypertension, and every 4-6 months for patients on aldosterone antagonists 1

A creatinine increase >50% or >266 μmol/L from baseline warrants halving the ACE inhibitor/ARB dose, according to the British Journal of Pharmacology 1
A creatinine increase >100% or >310 μmol/L requires discontinuation of ACE inhibitor/ARB, and an eGFR <20 mL/min/1.73m² requires discontinuation 1
Potassium >5.5 mmol/L requires halving the dose of ACE inhibitor/ARB or aldosterone antagonist, and potassium >6.0 mmol/L requires discontinuation of aldosterone antagonist 1

Never reduce medication based on a single low blood pressure reading—always verify with multiple measurements using proper technique, as recommended by Praxis Medical Insights 2
Monitor more frequently during clinical deterioration or medication changes: days to 2 weeks, according to the British Journal of Pharmacology 1
Target control within 3 months, not 6-12 months, and discontinue diuretics if worsening renal impairment or dehydration occurs 1, 2, 3