I am having frequent skipped beats from yesterday ( getting 15-20 beats in an hour ) I don't know what they are (PVC or PAC) I have had ECG yesterday no PVC was diagnosed in that and previously in holter a month back no PVC were there but from yesterday I feel a flutter in my center chest frequently. My ECHO has always been normal ( last happened in June) and recent NT pro BNP is 50 any negative Trop I. But I feel anxious and afraid of sleeping as I feel it will kill me in Sleep. Are they this dangerous? All I am thinking of V-Fib and SCD in sleep. Apart from that I don't feel any other symptoms as of now and no rapid heart beats. I am on concor 2.5 mg. But skipped beats are pronounced.