question: My mother died in the last month.It hapenned like this - after having our dinner at 9 pm she felt breathlessness.I bought a serflo 250 inhaler and used 2 puffs .....it didn't work...after 5 mins i again gave 2 puffs...it didn't work...after 5 mins i gave one puff...after some 3 to 4 mins she suddenly became unconcious...when we took her to the nursing home (within 15 mins) they said that she has died...she had a heart surgery 36 years ago...was her death due to heart attack or might be due to extra dose of inhaler ?