my dad is 87 yrs. has had copd for quite a few yrs. now & this past Nov.7th had a extreme amount of c02 build up in his lungs & it caused a heart problem ( 40-45%). I don t know if they were talking about enfraction or not. But, now Dad is on oygen @ liter 2 . Anyway, for the last 2 nights he can t sleep laying down without hacking a dry cough. He was @ drs. on friday the 6th. Dr. put him back on prednisone treatment & said that he heard a little congestion in top left lung, but didn t order any course of anitibiotics. Dad has been on them recently & I maybe dr. forgot or didn t deem necessary .I wasn t with my dad @ the drs. , my sister was & she said that she got the impression that the dr. may think he is 2 his end of time. Now, my question is if he can t sleep laying down , what might be the cause for this? Thank You, Debbie