I am a nurse and I work in the cardiac unit
alot of the time. Normally the human heart beats between 60-80 times a minute. If the doctors said the number 17 perhaps they were referring to his respiration's. Which is the number of times you breath in a minute and if so 17 was a good number. Alittle uneven but not bad. So hopefully that's the number they were talking about. That should be between 16-20 times a minute. You and your son will be in my prayers.