Is continual bigeminy dangerous? with a normo BP, no chest pain or any discomforts, no SOB, my husband was fighting fire on a roof in 125 degree heat with Prednisone 60mg at peak blood levels and lost his ability to breathe under the SCBA. He felt really bad and had to get off the roof before he fainted. So he had heat exhaustion and they discovered he had bigeminy and has not stopped it. After Prednisone 60mg for 5 days, then 40mg for 5 days, then 20mg for 5 days, he then weaned very slowly off the junk. He was given this without my knowledge for a sinus infection. He has some asthma symptoms in the past and has used Albuterol, antihistamines and decongestants on a regular basis. So the Cardiolyte test showed a weakened heart globally at 42% EF. but after another week after the Prednisone was finished and out of his body the Echo results were different.