I'll start this Post with a nod of acknowledgement to EmmaF91 who touched on Ventolin Dosage in one of her recent Posts. This topic is such an important one I wanted to further highlight and elaborate on it.
Earlier this year I was surprised (having taken the precaution of visiting my local hospital as a result of a serious exacerbation) over the 'amount' of Ventolin I was encouraged to use to cope with my serious asthma attack. (I was also Nebulised, but that's not really relevant to the point I'm trying to make).
Here's the thing. Although I've had Asthma since childhood, no one had previously pointed out - until it got worse a couple of years ago - that, during a bad attack, I could take as much as 10 consecutive Puffs of Ventolin, preferably at one minute intervals (but all at once, via a spacer, if I preferred).
What really surprised me during my Hospital Visit, however, was that, although I dutifully reported I'd already had 10 Puffs in the last few hours, I was encouraged to take a further 10 Puffs. (I actually ended up having 26 Puffs within an 18 Hour Period).
The 'relevance' of this is that I'd been 'conditioned' (for years) either by myself or the absence of advice to the contrary, so that - to my mind - if I'd taken half a dozen Puffs of Ventolin over the course of a 'rough day', I wouldn't risk taking any more, in case I overdosed and did myself some serious damage.
I hope, therefore, it's useful (while advocating minimum use of Ventolin) to demonstrate from my Hospital Visit Experience that - for many (if not all) Asthmatics - the risk of overdosing on Ventolin during a 'Serious' Attack, is probably less than the dangers of 'under-medicating', especially when you factor in 'not only' the 'immediate' danger of a 'Serious' Asthma Attack, but also the long-term damage that under-treatment during 'severe' exacerbations may do to the lungs. (Minimising Long Term Lung Damage resulting from each 'Serious' Exacerbation is also an argument for 'not' delaying Oral Steroid Treatment, assuming you're one of those Patients that Steroids are able to help).
Regarding Inhaled Meds 'Delivery Methods' - especially when a 'severe' attack occurs - a Spacer is a great device to keep handy, even if you don't usually bother using it for Ventolin Dosing during 'mild' exacerbations. Getting Inhaled Drugs into your Lungs when you're 'seriously struggling to breath' can be quite a challenge. A typical MDI Device (such as Ventolin Inhaler) often fails to properly deliver - or effectively distribute - Dosage. This is most often due to a 'large' percentage of Users (including those who have been prescribed such devices for years) still - unknowingly - failing to use their Inhaler correctly on many occasions. Good Inhaler Technique is probably further compromised during a 'serious' attack when an Asthmatic is anxious, panicking, or attempting to 'dose' a child or someone unable to 'dose' themself.
Concerning Powder Inhalers, one of the issues with these devices is that they typically require the strength of your 'draw-of-breath' to inhale the Powder. A serious exacerbation can reduced what 'suction' you can muster, thereby adding to difficulties and increasing anxiety if the 'serious attack' warrants not only Ventolin, but also 'dosing' with any 'Powder' Inhaler you might also be using.
There are good points about Powder Inhalers, e.g. Better Airway Distribution, apparently, plus (possibly) reduced risk of inhaling bacteria that's bred inside your Spacer if you've failed to rinse it after use, or not cleaned it thoroughly enough (perhaps missing the area around / beneath a rubber seal).
Hope this helps someone.
Footnote:
I've had incidents where Ventolin seemed to deliver little relief during an Attack, but 'additional' Fostair provided some 'much appreciated' assistance. I'm no Medic, so please don't try this yourself unless you've checked with your GP first.