Для Vlad34.
Цитата:
Если есть ОСА при увеличенных аденоидах, то могут возникнуть и аритмии.
Это ваше предположение...
|
Нет, не предположение...
Вот более достоверный источник.
Obstructive sleep apnea. [
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Etiology
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• Enlarged tonsils and adenoids (mainly in children).....
Cardiac arrhythmias are serious complications of obstructive sleep apnea. A pattern of repeated cycles of bradycardia during the apnea and followed by tachycardia with arousal that terminates the apnea is the most common. Other arrhythmias include sinus arrest lasting up to 10 seconds, second- or third-degree heart block, premature ventricular contractions, and potentially lethal tachyarrhythmias. The mechanism for bradycardia appears to be a reflex increase in vagal tone caused by stimulation of carotid body receptors by hypoxemia. Hypoxemia that occurs in the absence of apnea induces an increase in respiration that causes lung distention. Lung distention inhibits vagal activity (the Hering-Breuer reflex) and permits cardiac acceleration to occur. During apnea the increased vagal tone induced by hypoxia and by mechanical effects of obstructive sleep apnea associated with intrathoracic pressure swings leads to bradycardia. Increased vagal tone also contributes to periods of asystole and arteriovenous block. The increased sympathetic tone that accompanies the arousals at the end of apneas appears to contribute to premature ventricular contractions, sinus tachycardia, and ventricular tachyarrhythmias. Hypoxemia also increases ventricular irritability.