My father faced heavy breathing problem with symptoms of can't walk, swetting, can't breathe, can't sleep flat.,  all night he not slept,and we met doctor next day morning and as per local doctor advise he admitted cardiac hospital (joined as per ECG test )with heavy breathing problem and swetting. He is fine with oxygen first in ICU and talked to us, doctor told we brought on time. But after one hour I visited, he is on ventilator given injection (after that doctor told serious ) and told water in lungs and again after two hours cardiac arrest (no response from heart). Is it due to ADRENALINE allergic/overdosed? Or general cardiac arrest due to time delay and respiratory failure? Death Causes: Type 2 respiratory failure Pulomanory odemea / acute CHF Pulse less electrical activity Cardio respiratory arrest Kindly tell me🙁