Obstructive Sleep Apnea and Hypertension: Updates to a Critical Relationship

Area of Science:

• Cardiology
• Sleep Medicine
• Nephrology

Background:

• Obstructive sleep apnea (OSA) is an underdiagnosed condition frequently associated with essential hypertension (HTN), resistant hypertension (r-HTN), and cardiovascular disease (CVD).
• A significant percentage of young adults (18-35 years) with unexplained HTN have underlying OSA.
• The link between OSA and HTN involves complex pathophysiology, including sympathetic hyperactivity and metabolic derangements.

Purpose of the Study:

• To provide an updated review on the epidemiology, pathophysiology, and treatment of hypertension associated with obstructive sleep apnea.
• To highlight recent findings on the relationship between OSA and HTN severity and potential therapeutic interventions.

Main Methods:

• Review of current literature on obstructive sleep apnea and hypertension.
• Analysis of epidemiological data, pathophysiological mechanisms, and emerging treatment strategies.
• Evaluation of diagnostic methods for OSA, including home sleep studies.

Main Results:

• Mild sleep apnea is a risk factor for HTN, with 89% of young hypertensive patients having undiagnosed OSA.
• Home sleep studies are as effective as polysomnography for OSA diagnosis.
• Nocturnal oxygen desaturation correlates with HTN severity, and gut microbiome alterations worsen HTN in OSA patients.
• Emerging treatments include carbonic anhydrase inhibitors and probiotics.
• OSA recognition improves outcomes post-STEMI.

Conclusions:

• OSA and HTN share adverse pathophysiological connections, challenging blood pressure control.
• Screening for OSA is recommended for patients with refractory hypertension.
• Understanding and managing OSA is critical for effective hypertension treatment and cardiovascular health.