Sir, I am suffering from diabetes and htn for the last 2 years. I have a family history of heart failure. That's why I undergo echo 1.5 years ago And all are normal with EF 66%. Only grade 1 diastolic dysfunction. For the last 2 months when I trying to sleep, The time I fall to deep sleep at that time I feel I don't have air in my chest and I feel shortness of breath for a second and wake up. It's happened every day multiple times. That's why I can't sleep properly. Please suggest me what should I do and is that I go for echo one more time as I already done 1.5 years ago.