coming from the country with highest rate of asthma per capita.....
To start off with, what crapmagnet said
Metered dose inhalers are recommended by the peak clinical body here in regard to asthma and COPD. Several studies here have show that for pts who still have adequate air movement, PMDI's when used with a spacer aerosolize (is that even a word?) the drug better and depisit it to the smaller airways more effectively than nebulised treatments as the largwe droplets of nebulised drugs ends up binding to mucous in the upper respiritory tract and goes no where. PMDI's are given at 4 puffs ever 4/60 until resolution of symptoms by the pt or by us.
For pts with inadequate air movement, the salbutamol + atrovent already stated here is whats recommended, though its via a nebuliser and we use an initial dose of 5mg salbutamol and 500mcg of atrovent, as this is supposed to give a better ratio of drug delivered to mucouse membranes and drug delivered to small airways. each dose after that is 2.5mg of salbutamol. Pts with an exacerbation of COPD go straight to a nebulised Rx as these patients get atrovent no matter what their presentation.
For the intensive care guys, dexemethesone and IV salbutamol infusions is something that they can throw in for those who are refractory to treatment. This guideline here changes constantly as the info is updated, in 2 years i have seen this guideline changed twice in its detail (not necessarily in drug regime)
Asthma Council of Australia
Quote
If you deviate and screw up, be prepared to defend your decision.
The problem from my observation, i believe doesn't seem to be hammering the drugs in, moreso inexperience people (and i don't mean the OP, just in general) know the drug regimes but don't know when to stop. You can hammer away with the salbutamol at 5/60 continuously if you want, and many do because the pt still has an exp. wheeze, but they fail to take in the whole of the pts respiratory function. HR of 100, Sats of 95, Exp. wheeze, RR26 but sitting up and talking full sentences, and some mildly distressed, is not going to cop nebs continuously until we reach the hospital - way to make someone anxious again, give em 30-40mg of salbutamol they didn't need.
As a side note, i absolutley hate it when people move these patients without putting in a IV on the premise of "saving time", really pisses me off!