Obstructive sleep apnea and coronary artery disease

Area of Science:

• Cardiology
• Sleep Medicine
• Internal Medicine

Background:

• Obstructive sleep apnea (OSA) is increasingly recognized for its detrimental effects on the cardiovascular system.
• The complex interplay between OSA and coronary artery disease involves neural, humoral, mechanical, and hemodynamic factors.
• Elevated sympathetic nerve activity during the day is a key mechanism linking OSA to hypertension.

Purpose of the Study:

• To review the cardiovascular consequences of obstructive sleep apnea.
• To explore the association between OSA and cardiovascular morbidity and mortality.
• To evaluate the potential benefits of continuous positive airway pressure (CPAP) in managing cardiovascular risks in OSA patients.

Main Methods:

• Literature review of recent research on OSA and cardiovascular disease.
• Analysis of pathophysiological mechanisms connecting OSA with cardiovascular complications.
• Examination of evidence regarding the impact of CPAP on cardiovascular outcomes.

Main Results:

• OSA is an independent risk factor for arterial hypertension.
• Associations exist between OSA and ischemic ST-segment changes, ventricular arrhythmias, and sudden cardiac death.
• Preliminary evidence suggests CPAP may reduce cardiovascular risk in severe OSA patients with coronary artery disease.

Conclusions:

• OSA poses significant risks to cardiovascular health, including hypertension and potentially fatal arrhythmias.
• CPAP therapy shows promise in ameliorating cardiovascular risks associated with severe OSA.
• Further controlled studies are required to definitively confirm the prognostic benefits of CPAP for cardiovascular outcomes in OSA patients.