A growing number of patients have had surgery previously and proceed to have "Advance Sinus Surgery" with David McIntosh in an effort to address their problems. When the surgery is being done again, it is called a "Revision case". Revision cases are usually more difficult and harder to achieve a perfect outcome. Having said that, there is no such thing as perfect anyway.

David has focused on specialising in sinus surgery. This means he performs this type of surgery regularly and patient feedback regarding the results is very favourable. Part of the success of surgery comes down to the post-operative care plan and this is individualised for each patient to maximise the benefit of surgery. This plan is provided in writing, as is a surgical summary to allow patients to take home the most information possible regarding the care they have received.