1.OSA and hypertension
Multiple studies have shown that 0SA is associated with, or even causal, hypertension. About 50% of patients with 0SA have hypertension, and at least 30% of patients with hypertension have OSA. 83% of patients with refractory hypertension were. In patients with SA, this hypertension is more closely associated with OSA. Improving OSA can effectively control blood pressure in patients with hypertension secondary to OSA. CPAP can significantly reduce blood pressure in patients and is a safe and effective way to relieve hypertension without drugs.
2.OSA and arrhythmia
Studies have shown that OSA patients may have irregular heart rhythm when sleep apnea occurs, which is manifested as cardiac arrest, atrial fibrillation, premature ventricular beat, etc. However, the most common arrhythmias are severe bradycardia and atrioventricular block, which in some ways reflect the hypoxemia caused by sleep apnea. Chronic arrhythmias or heart blocks occurring during sleep apnea can be improved by using CPAP.
3.OSA and heart failure
OSA is a risk factor for promoting, inducing and aggravating heart failure, and OSA without improvement of CPAP is an independent risk factor for increased mortality in heart failure patients. Some studies have shown that CPAP can increase ejection fraction and decrease cardiac function grade in heart failure patients with OSA. In heart failure patients with central sleep apnea (CSA),CPAP can reduce heart transplant rates and improve survival.
4.OSA and cerebrovascular diseases
Snoring is associated with an increased risk of stroke and is independent of other cardiovascular risk factors. Hemodynamic changes induced by OSA as well as vascular, inflammation and thrombus factors may increase the risk of cerebrovascular disease.
Sleep apnea is often accompanied by acute and dramatic decrease in cerebral blood flow, which is mainly related to hypoxemia, cerebrovascular auto-regulation disorder and impaired vasodilation.
Long-term use of CPAP can not only improve patients' sleep, but also reduce the recurrence of stroke.
Improving OSA may not only relieve snoring but also reduce the risk of future cardiovascular and cerebrovascular disease. For patients with sleep apnea, continuous positive airway pressure non-invasive ventilation is preferred.