Management of Uncontrolled Hypertension with Obstructive Sleep Apnea

Hypertension Management in OSA

The European Society of Cardiology recommends that treatment for patients with uncontrolled essential hypertension and obstructive sleep apnea (OSA) should focus on optimizing antihypertensive therapy while ensuring proper OSA management with CPAP therapy, as OSA significantly contributes to treatment resistance and increases cardiovascular risk 1, 2
OSA is highly prevalent in patients with resistant hypertension, with studies indicating up to 60% of resistant hypertension patients have features of OSA 1
Diagnosis of OSA is confirmed through polysomnography with an apnea-hypopnea index (AHI) > 5 indicating OSA (mild: AHI < 15; moderate: AHI 15-30; severe: AHI > 30) 1, 3

For moderate (AHI 15-30) and severe (AHI > 30) OSA, continuous positive airway pressure (CPAP) is indicated and usually improves BP control and helps resolve resistant hypertension 5, 2

The European Society of Hypertension recommends that patients monitor blood pressure several times a week, sitting quietly for 5 minutes before taking readings, and take three consecutive readings, each one minute apart, to ensure accurate assessment 6
Home blood pressure monitoring is valuable for assessing treatment effectiveness and detecting white coat or masked hypertension 6
The American Heart Association recommends evaluating for pseudoresistance (poor BP measurement technique, white coat effect, nonadherence) and screening for other secondary causes of hypertension if BP remains uncontrolled despite optimization of therapy 4, 7
OSA may be contributing to treatment resistance, with studies showing that 83% of patients with treatment-resistant hypertension had unsuspected sleep apnea 7