My husband's atrial fibrillation seems to have progressed. he's breathing very rapid and loud while sleeping, has higher heart rates, sick sinus syndr?

See a cardiologist: Please review him with his Cardiologist asap. His symptoms are suggesting worsening Atrial fibrillation, Obstructive Sleep apnoea and therefore a possibility of Heart failure as well. He needs ti be reviewed by a doctor as soon as possible to avoid any complications developing.

Need to see doctor: He could be having sleep apnea which can exacerbate arrhythmias. Best thing to do is see a doctor for further testing.

Sleep apnea and AFib: There is a well known association between hypoxemia (low circulating oxygen in blood) and stress on heart manifesting as arrhythmia. In ur husbands case, loud breathing may be snoring. Have him see a reputable pulmonologist for eval and treatment of sleep apnea if he has it. Treat underlying cause of what may be worsening his AF. Cardiologist ought to coordinate with pulmonary doc.