Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account

New Posts   Today's Posts

Lowering EPAP makes CA's skyrocket
A few weeks ago, I lowered the EPAP settings and just noticed the results. Ugg, the CA events have rocketed up to an average/hour of about 10-12 events from 1-2 events previously.

It's currently: EPAP 7-8 / IPAP 11-12
Was previously: EPAP 9.5 / IPAP 11-12.5

I'm so curious as to why a drop in EPAP pressure would contribute so significantly to just the # of CA's (without much change in OA's, etc.).

(Sorry if this is such an obvious answer.)
Sleep Apnea has given me a terrible memory. Please forgive me if I've repeated myself.
Post Reply Post Reply
You have increased your pressure support (since IPAP is nearly same while EPAP is down). This sometimes lead to increased washout of CO2. This means your End Tidal CO2 goes down. This reduces your drive to breathe. This means you forget to breathe for a few extra seconds until that co2 bounces back to normal. That forgotten breath is recorded as an Clear Airway Apnea.

If reducing EPAP has not introduced any obstructive events then lowering it was a right decision. But you should keep pressure support constant to begin with. If your H events or RERA events increase, then increase PS but not otherwise. It may increase CAs like it did in your case.
Started APAP 4-20, Closed range to 7.5-14, then straight 8.0 w/ Aflex 3
RDI always below 1. But sleep much much better at straight pressure.
Started on F10, Tried Quattro Air successfully. Finally settled on P10.
Post Reply Post Reply

Possibly Related Threads...
Thread Author Replies Views Last Post
  [CPAP] ResMed AirSense 10 makes loud noise when inhaling. sanger 91 38,349 12-31-2016, 02:00 PM
Last Post: PaytonA
Question [CPAP] New and need some help lowering AHI CaseyF 114 3,683 12-25-2016, 09:01 PM
Last Post: mcsheltie
  [Equipment] Machine makes groaning noise on inhale wideawake34 5 682 12-25-2016, 06:50 PM
Last Post: icyura10
  Is there a TOP 5 for Lowering AHI? TheManseHen 12 3,165 12-25-2016, 12:13 PM
Last Post: photosmike
  [CPAP] Interpreting Sleephead Stats EPAP GaryMann 4 544 08-28-2016, 11:18 PM
Last Post: GaryMann
  EPAP Vs CPAP bib03 7 949 06-20-2016, 01:09 AM
Last Post: vsheline
  Does REDS560HS makes noise at night? ivanzheng 8 723 06-13-2016, 11:45 AM
Last Post: archangle

Forum Jump:

New Posts   Today's Posts

About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.

For any more information, please use our contact form.