So - I must reply both as a mother of a severe asthmatic and an EMT-P. I was taught up to 3. My protocols and medical director didn't even include it on our rigs. Now, as a mom, I can tell you exactly what works for my son, and that is back to back nebs of albuterol and atrovent, given simultaneously. If he gets to a point that the albuterol isn't working, then obviously, he needs something else to kick in.
As a mother who has called for assistance and been turfed, I understand the confusion. Most patients (or guardians of patients....) KNOW what works for their attacks - Although I agree that protocols say what can be done, not what HAS to be done, I think that it might also be a wise decision to ask your patient (or their guardian) what they need to help them.
I can't get my son's pediatrician to provide me an atrovent inhaler, because he FIRMLY believes in the one dose methodology, however, he has privileges at the Children's Hospital in town that will give at least 3 back to back doses as a minimum and will KEEP giving if needed. Sometimes I just shrug and remember to be an advocate - it's the best we can do most of the times. Guess where I go when I need to....and no, never has he gotten an IV for re hydration due to these severe attacks and continual use of atrovent.