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EucapSys

Air mixture with adjustable CO2 levels

Airwave oscillometry

The tremoflo® Airwave Oscillometry System (AOS) is a portable medical device intended to monitor lung function and assess human respiratory diseases such as asthma and COPD in adults and children.

The device produces measures of airway resistance, reactance and other lung function parameters to assist physicians in diagnosis, treatment selection and evaluation of treatment efficacy. The principle technology of the AOS is based on a compact implementation of the Forced Oscillation Technique (FOT), a noninvasive technique that assesses lung function by superimposing a multi-frequency airway on top of the patient‘s spontaneous breathing.

Just tidal breathing

No artifical breathing manouvre needed, no rough impulses applied, measuring with natural tidal breathing

Easy to use & very fast

Intelligent software, less instruction time needed, qualified for many measurements per day

Reversability & provocation testing

Templates for provocation and reversibility testing are excellent for identifying pre/post changes when using AOS

Suitable for geriatric and pediatric use

The method works cooperation-free. Therefore allowing to measure very young children, demented persons and even lying or uncounscious patients

Semi-automatic calibration verification

Daily verification (30 s) ensures the device is working properly, without the need of annual maintenance

Compact and portable

Not only suitable for stationary, but also light enough for mobile use

Spirometry vs. oscillometry

Spirometer and Oscillometer with PFT

Obstructive pulmonary diseases such as asthma and COPD are increasingly recognized to originate in the “small airways”. Early obstructions in these peripheral airways are oft en not measurable
only by spirometry and therefore risk going undetected. Oscillometry has been shown to be sensitive to changes in the small airways.

Consequently, oscillometry provides unique and valuable information regarding peripheral lung function over and above spirometry, which
translates into better patient outcomes.

Optimal: combination of both:
As the study by the Scottish Centre for Respiratory Research (published in 2022) shows, it is best to combine the advantages of spirometry and oscillometry measurements. This combination allows
a complete characterization of airfl ow limitation in moderate to severe asthma.

Fundamentals

tremoflo® measurements are fast & easy.
The patient just breathes quietly.
To assess respiratory function, the tremoflo® adds a gentle oscillatory wave to the patient’s regular, quiet breathing. A short measurement duration of only 20 seconds allows three manouveres within a couple of minutes, even in patients who have difficulty performing spirometry.

Outcomes

Summary of clinician interpretations per published studies 1-5
A pair of two curves calculated from the raw data reflects the mechanical properties of the respiratory system in characteristic patterns. Several key outcome parameters are then derived from these curves.

Characteristic patterns

Benefits at a glance

Advantages for children and elderly

Child uses tremoflo

Spirometry tests are often stressful and depend on patient cooperation and maximal effort. Especially elderly and little children have difficulties in understanding and following the instructions.

As oscillometry is performed in tidal breathing, neither skilled coaching by the operator nor patient effort is required to obtain a successful test.

1 Hirsh et al., AAAAI 2011   2 Usmani et al., RESPIRATORY MEDICINE 2016   3 Al-Alwan et al., AJRCCM 2014   4 Galant et al., AAAAI 2017    5 Johnson et al., THORAX 2007