YES I WAS SLEEPING, AND SUDENLY I WAS AWAKE WITHOUT BREATHING THIS WAS HORRIBLE CAN YOU TELL ME WAS HAPPEND ALSO THIS IS THE FOURTH TIME IS HAPPENING, I CANT BREATHE MY WIFE TRY TO DO SOMETHING TAPPING IN MY CHEST, BUT THIS EPISODE LAST FOR SECONDS BUT I FELT I WAS DYING,I HAVE HIGH BLOD PRESURE BUT IS CONTROLED, AND MANY YEARS AGO I HAVE A SURGERY FOR CORRECTION MY SYNOSITIS IN MY NOISE. THANKS