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PrO2 training and measurement
PrO2 Display — no phone or tablet required

Standalone operation

On-device results when pairing with an app is inconvenient—ideal for ICU and other settings. Switch between MIP/MEP and SMIP/SMEP (full breath) modes on the unit.

Measurement tutorial Display modes

Measuring MIP, MEP, SMIP & SMEP

Step-by-step assessment technique for the PRO2-DISP-W display—no phone or tablet required. Results appear on the back screen; record them manually or sync later with the app when convenient.

Before your first breath

  • 1. Press and release the power button on the back of the unit. Confirm the display is on.
  • 2. Check the measurement mode shown on the display (see Modes & display behavior below).
  • 3. Tighten the mouthpiece and form an airtight lip seal — air leaks reduce accuracy.
  • 4. For shared devices, attach a disposable filter and clean the mouthpiece between each user (see cleaning instructions below).
  • 5. For clinical programs, confirm inspiratory vs expiratory testing matches your protocol before starting.
PRO2-DISP-W rear display showing MIP/MEP mode

Multi-user & cleaning

Use disposable filters when more than one person shares a device. Clean the mouthpiece between every use; wipe the housing with alcohol or bleach wipes—do not submerge the device.

Full cleaning & multi-user instructions · Filters & mouthpieces

Which mode do I need?

MIP / MEP mode (peak pressure)

Use for MIP and MEP assessments. The display shows a single peak value (cmH₂O). The front LED turns green when the breath is complete.

SMIP / SMEP mode (full breath)

Use for SMIP and SMEP assessments. Results cycle: MIP or MEP → Power (SMIP/SMEP) → Time → FIT score.

Switch modes by pressing and holding the power button until the mouthpiece LED turns blue, then release. See changing modes

Assessment protocol (all measures)

Rest 60 seconds between attempts. Perform 2–4 trials until you achieve three repetitions within 10% of each other—the best valid effort is your result.

MIP/MEP mode

MIP

Maximal Inspiratory Pressure

"Exhale all the air from your lungs. When ready, breathe in as hard as you can."

Technique

  1. Exhale completely with your mouth off the device.
  2. Seal and inhale — lips tight on the mouthpiece; inhale hard and fast for 1.5–2 seconds.
  3. Stop when cued — the front LED turns green after pressure falls for more than one second.
  4. Read the display — the peak MIP value (cmH₂O) stays on screen for one minute.
On the display: Peak inspiratory pressure only. Write down the number before the next breath clears the screen.
MIP/MEP mode

MEP

Maximal Expiratory Pressure

"Take the deepest breath you can. When ready, breathe out as hard as you can."

Technique

  1. Inhale deeply with your mouth off the device until lungs are full.
  2. Seal and exhale — lips tight; exhale hard and fast for 1.5–3 seconds.
  3. Stop when cued — green LED when pressure decreases for more than one second.
  4. Read the display — peak MEP value (cmH₂O) holds for one minute.
On the display: Peak expiratory pressure only. Same mode as MIP—the device reports the direction of your effort.
SMIP/SMEP mode

SMIP

Sustained Maximal Inspiratory Pressure

"Breathe in as hard as you can and continue as long as possible."

Technique

  1. Exhale completely off the device.
  2. Inhale and sustain — maximum effort from the start; maintain pressure as long as you can.
  3. End the breath when you can no longer hold pressure (or when the cycle completes).
  4. Read the cycling results — note each screen as it appears.
On the display (in order): MIP (peak) → Power (SMIP) → Time (seconds) → FIT score. Record Power for SMIP; screens cycle for one minute.
SMIP/SMEP mode

SMEP

Sustained Maximal Expiratory Pressure

"Breathe out as hard as you can and continue as long as possible."

Technique

  1. Inhale deeply off the device.
  2. Exhale and sustain — maximum effort from the start; maintain pressure as long as possible.
  3. End the breath when effort fades.
  4. Read the cycling results — same sequence as SMIP, for an expiratory breath.
On the display (in order): MEP (peak) → Power (SMEP) → Time → FIT score. Record Power for SMEP.

Pro tips — standalone assessments

Airtight seal

No air leaks at the mouthpiece—leaks lower measured pressure.

Record results promptly

Display values clear after one minute or when the next breath starts.

Sync when you can

Pair with the PrO2 app later to upload sessions and track trends in the cloud.

Training against a baseline (not just assessment)? Training tutorials · TIRE protocol overview

Modes & display behavior

The display shows live feedback and holds results briefly so you can read them without a paired phone or tablet.

MIP/MEP mode

In MIP/MEP mode, the front LED turns green after the pressure begins to decrease for more than 1 second.

At this point, the patient should stop the breath. The result stays on the screen for 1 minute or until the next breath is taken.

MIP
89

SMIP/SMEP (full breath) mode

In SMIP/SMEP mode, results appear in order: MIP or MEP, Power (SMIP/SMEP), Time, and FIT score.

Results cycle for 1 minute or until the next breath is taken.

MIP
89

Changing modes

You can switch between MIP/MEP measurement and SMIP/SMEP (full breath) measurement.

Press and hold the power button until the LED by the mouthpiece lights up blue.

When you release the power button, the display shows the new mode.

MIP / MEP
MODE

Train with correct technique—whether you use the app or the display alone.

All tutorials & how-to guides How to train (shortcut URL)