Effectiveness of Incentive Spirometry

[physiobob]

the efficacy of incentive spirometry.

I suppose this comes down to the word efficacy. It does get the patient breathing and often that is what we are after. So it does create a desired effect. This is slightly different to it's effectiveness, which should be taken in the context of what it is being applied for.

Perhaps you should look at the reasons for the application of the technique. Then relate the efficacy to each one individually. The effectiveness might be controversial but consider them in relation to doing nothing at all.