Sir /ma'am
My grandfather had covid pneumonia 12/25 hrct score. He was discharged 40 days ago. From past 5-6 days his oxygen level drops to 92-93 while in sleep and when he wakes up his oxygen level comes back to 96-97. What should we do to cure it? And is it dangerous?
His all reading are in range , only d dimer is high 1.06 (range is below 0.5).
CrP is in range as well . Kindly help