My VCOM Experience
Hey everyone,
I wanted to share my ongoing experience experimenting with the V-Com inline adapter (started around August 11, 2026) to treat Upper Airway Resistance Syndrome (UARS). If you suffer from severe flow limitations but can’t tolerate the high pressures required to fix them, this might be relevant to you.
My Baseline & The Problem
• My Setup: ResMed CPAP, P30i nasal pillows, mouth tape, chin strap, and a wedge pillow.
• The Clinical Picture: I have a very low AHI, but I suffer from severe UARS characterized by frequent respiratory effort-related arousals (RERAs) and persistent flow limitations (visible as flat, jagged tops on my OSCAR flow curves).
• The Dilemma: To round off those flow limitations and prevent arousals, I need higher pressures. However, any pressure above 12 cmH2O immediately triggers severe aerophagia (air swallowing), cheek puffing, and subsequent wakeups—completely defeating the purpose of the therapy.
Why EPR Didn't Work For Me
Many people recommend Expiratory Pressure Relief (EPR) for comfort and aerophagia. In my case, EPR actually made things worse.
EPR drops the pressure when you exhale, which allowed my fragile UARS airway to micro-collapse during expiration. Then, when inhalation started, the sudden "rush" or rapid rise of inspiratory pressure (IPAP) caused a massive blast of air that forced its way into my stomach and puffed out my cheeks.
Enter the V-Com (The "Anti-EPR" Solution)
I am currently running a fixed CPAP pressure of 13.8 cmH2O with the V-Com installed (and electronic EPR turned completely OFF).
The results have been a game-changer:
• The Mechanism: V-Com acts like the exact opposite of EPR. It introduces physical flow resistance that dynamically slows down and softens the inspiratory flow rate (IPAP), while leaving your expiratory floor (EPAP) solid and rigid.
• Airway Stability: Because the expiratory pressure doesn't drop, my airway stays splinted open all night. I don't experience the expiratory collapses I had with EPR.
• Aerophagia Relief: Because the initial inhalation wave is mechanically softened and rounded off rather than delivered as a sharp "punch," my aerophagia and cheek puffing are now drastically reduced and subtle, even at 13.8 cmH2O.
• The Outcome: My "Steady Breathing" metric in OSCAR has improved significantly. More importantly, I am finally waking up feeling refreshed and actually willing to get out of bed in the morning—a massive win for me.
My Takeaway & Next Steps
The V-Com is absolutely not a scam, but it is misunderstood. It is highly effective for high-pressure CPAP users who need a solid, high EPAP floor to hold the airway open, but a slower, gentler inspiratory rise to prevent air swallowing.
Ultimately, I think a BiLevel (BIPAP) machine may be the ideal long-term solution so that I can independently dial in the exact inspiratory rise time and expiratory base. But in the absence of immediate clinical support, the V-Com is doing an incredible job converting my CPAP into a pseudo-bilevel dynamic. (yes I know it’s the opposite to bipap).
Downsides - OSCAR data is impacted with vcom in place. Some of the data is still good, but I don’t think the flow rate curves are accurate - they look too perfect.
I’m based in the UK so bilevel is difficult to acquire for my needs. VCom cost me $80 - and in my case it’s been worth it, considering the 100s I’ve spent on different masks and other osa related paraphernalia!
Hope this helps!
Here is my latest sleepHQ data for reference: https://sleephq.com/public/f16c5f22-ab04-4696-912c-ad05661b2c2e