I don't know the answer to your exact question but have had the Vivaer procedure and it has been very effective. The reason for commenting is to kind of explain it. I've seen it referred to as an ablative protocol, meaning that tissue is removed, and that's not true from what my ENT described or what I experienced. [Though perhaps it can be used to actually remove tissue?] She explained that it 'remodels' tissue, that it can change the shape and size of an obstruction in my case. The radio-frequency essentially 'heats' an area which then responds by forming a kind of scar tissue, which is a contractive (shrinking) response. By and large, one is left with pretty much the same amount of tissue, but it has a different contour. Conceptually, I imagined a potter smoothing out a rough area to create a different curve or shape.

In my case, areas of the nasal passage that were too narrow, due to obstructing tissue, are no longer too narrow and it's easier to breathe. And I no longer take all the meds that never worked anyway because I didn’t have allergies or need steroids for non-existent inflammation. I didn't have a medical issue. I had a structural issue. The only alternative procedure to achieve a similar breathe-easy freedom would have required extensive reconstructive surgery, with cartilage transplantation and considerable risk. I have too little structural cartilage due to a sports injury years ago. Vivaer simply reshaped it.

Again this is only one person's experience but, for me, it worked immediately. That's not uncommon. According to my ENT, many patients breathe better the same day.

It didn't hurt though, as with dental anesthesia, the first injection of the numbing anesthesia, was pain-equivalent to a dentist's or oral surgeon's first injection.

There was no pain, no bleeding, no open-tissue healing, which was very important to me. I didn't want any broken tissue, or infection vector, yet alone during covid lockdown.

There was one area that was better but could be improved. The solution was a second appointment to 'touch up' that area. It took ten minutes. I get the impression, from that, that Vivaer can be done in stages if necessary and, because it is so subtle, an experienced practitioner is unlikely to overdo it as, because it can be touched-up so easily, there's no need to be overly aggressive in the first place. It's important to work with an ENT who has significant experience as it's a relatively new protocol. It was a perfect solution for my situation and ended years of inhalers, antihistamines, nasal sprays. None of which worked because they were solutions to a problem I didn't have.