Resistant Hypertension: The 3-Question Screen Before the Fourth BP Med
July 8, 2026
A clinical brief for referring providers — week 1 of a 4-part July series on undiagnosed obstructive sleep apnea.
You have a patient on three antihypertensives whose pressure still won't come down. You're weighing a fourth agent. Before you do, it's worth ruling out the most common identifiable contributor most of us were never trained to look for: obstructive sleep apnea (OSA) — repeated collapse of the upper airway during sleep that fragments rest and drives nighttime sympathetic surges.
Three questions, under a minute
Answerable at the front desk:
Do you snore loudly?
Are you tired or sleepy during the day?
Has anyone seen you stop breathing in your sleep?
Two or more "yes" answers in a patient on treated hypertension is enough to test.
Worth keeping in mind
Major hypertension guidelines support evaluating for OSA in resistant cases — it's a recognized secondary contributor, not a zebra.
This abbreviated screen is the front-desk version of STOP-BANG (Snoring, Tiredness, Observed apnea, blood Pressure, BMI, Age, Neck size, Gender) — a validated 8-item sleep-apnea risk tool; a score of 3 or more flags meaningful risk.
Treating the apnea often does more for the pressure than the next pill — and spares your patient the side-effect load.
The bottom line
Before the fourth agent, ask the three questions. If the answers point to sleep, refer your patient — or call the office to book a 20-minute clinical briefing for your team. We're always glad to walk the screen and the referral path together.