My mother (86) is recovering from hemorrhage of brain stem that happened on 18-June-2012. Right now she is at home, in a state of coma - some eye movement; limbs movement in response to pain stimulus. She has trachestomy and PEG for feeding; all vitals are stabilised, blood report is normal etc. She has lot of problem with distended stomach - owing to flatulence. What could be causing this. In her feeds, Potklor (Postassium Chloride) is being given - could this cause flatulence? Her pulse rate stays around 120; earlier it used to around 90.