Seeing a lot of VS2 events the past 2 or 3 days

I'm seeing a lot of VS2 events the past 2 or 3 days. Those days are the same days I started getting nasal congestion, and I use nasal pillows. Does this mean I'm snoring or mouth breathing?

Could be mouth breathing to the point of losing valuable therapy pressure allowing the airway to collapse and thus snores happen...what does the leak graph say?
What does the AHI say?
Just how many snores are you talking about? They could also be related to sleeping position and/or REM stage sleep.
An image of your detailed report would help us see what you are seeing and help us advise better.

Don't know how to post images of your reports? This thread has links that explain how and also has examples of what we like to see (we don't need all those graphs that SH produces).
viewtopic/t103468/Need-help-with-screen-shots.html
how to post images using imgur
https://sleep.tnet.com/reference/tips/imgur

VS2 events don't appear to raise pressure and are not a the indicator of vibratory snore that VS is. I find it distracting and shut off that event graph. It shows up in summary data, but I have not personally found the VS2 data to be valuable, and for me, it does not correlate with leaks. VS2 is a Sleepyhead term, and it records a type of VS event flagged by Philips Respironics, however I have never seen a definition what the event actually is, and how it might be mitigated or treated.

Sleeprider wrote: I have never seen a definition what the event actually is, and how it might be mitigated or treated.

someone recently theorized that vs2 is a count, in the last two minutes, of snores that the machine detected.

it's in some thread here in the last couple months if you want to search for it.

The difference between VS and VS2 snores on the PR machines is NOT well understood because PR has NOT made information about how these two events are scored.

What we DO know:

1) PR machine record only VS2 snores if they are run in fixed pressure mode. They record both the VS2 and VS snores only if when run in Auto mode.

2) Encore Daily Data Reports show the VS2 information ONLY. And Encore's VSI is NOT (number of VS events)/(run time). The VS data only shows up if you look at the wave flow (flow rate data) in Encore, and that's not part of the standard report.

3) The VS snores are used to (aggressively) increase the pressure setting when the machine is set in Auto mode.

4) The VS snores have no number attached to them in the raw data the way the apneas, hypopneas, flow limitations, etc. have. The VS2 snores do have a number attached to them, but what that number actually means has not been established.

5) There was some speculation earlier this year (see Re: Sleepyhead Question about Snoring) that the number associated with each VS2 event is the number of snores in the last two minutes of breathing. This hypothesis is based on the fact that when you have a whole string of VS2 snores, they're tagged in two minute intervals AND the numbers attached to them are always reasonable if thought of as "number of breaths in a two minute window that are associated with snoring." This hypothesis also "fits" with the way that Encore does compute the VSI in its Daily Detailed Data Reports: Encore sums up all of the VS2 numbers for the night and divides that sum by the run time. If the VS2 numbers do indeed represent the number of snores in the preceding two minutes, then the sum of those numbers would be the total snores for the night, and the Encore VSI index would then be the average number of snores per hour of run time.

The upshot of all this is: PR regards the VS2 snore data as important as, and perhaps more important than, the VS data since their machines always record VS2 data. So seeing a lot of VS2 snores probably does indicate that you are doing some real snoring. The VS2 data has nothing directly to do with mouth breathing or leaks: It is possible to snore with your mouth closed (I do it a lot myself).

If you are using a PR machine in auto mode AND you have a lot of VS2 snores without VS snores also being flagged, that may mean that your snoring is NOT accompanied by the subtle flow limitations that indicate the airway is compromised. In other words, if nasal congestion leads to nasal snoring, it's possible that the airway itself is not being affected and perhaps the PR machines use this distinction when deciding whether to increase the pressure in the presence of snoring.

Finally, the usual suggestion from a sleep doctor (or their PA or nurse) about what to do if you're seeing a lot of snoring (of any kind) is to increase the pressure slightly. Your own snores can be disruptive of your sleep even if you're not waking up because of them.