High Blood Pressure That Doesn't Drop at Night and Its Link to Sleep Apnea

Obstructive sleep apnea (OSA) is associated with increased blood pressure (BP) during the night, even in mild cases.

• Recurrent airway obstructions in OSA lead to hypoxia and elevated carbon dioxide levels, which may raise sympathetic neural activity.
• This increased sympathetic tone could cause blood vessels to constrict, resulting in higher blood pressure.
• Hypertensive patients with OSA may not experience the usual nighttime drop in blood pressure, referred to as the 'non-dipping' pattern.
• Even mild cases of sleep apnea can disrupt normal sleep and contribute to elevated nighttime blood pressure through various mechanisms.
• Effective treatment of sleep apnea may improve blood pressure control and potentially lower cardiovascular risk.

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