H4-EN Foreword P
AGE
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1
1.2 Description of available tests
The Ergocard CPX device allows several types of measurement:
• Conventional spirometry
• Cardio-respiratory testing
• Lung volumes (only available for Ergocard CPX Professional)
• Lung diffusion (only available for Ergocard CPX Professional)
Spirometry
The conventional spirometry includes:
• Slow spirometry with measurement of lung-volume subdivisions (VC, TV, ERV, IRV, IC,
EC)
• Forced expiratory maneuver (FEV
1
, FVC, PEF, intermediate flows, FEF25-75…)
• Maximal voluntary ventilation test (MVV)
• Tidal minute ventilation test (Vmin)
Cardio-respiratory testing
The cardiopulmonary exercise testing consists in measuring the electrocardiogram,
ventilation and gas exchange (oxygen consumption and CO
2
production) during maximal
exercise performed by the patient on a treadmill, bicycle, arm ergometer, etc. This test can
also be done under hypo or hyperoxia conditions.
Additional measurements that can be done during the test:
• Pulse oximetry for evaluation of the saturation level (SpO
2
)
• Non-invasive blood pressure measurement (NIBP)
• Heart rate measurement with an heart rate belt
• Cardiac output by CO
2
rebreathing (indirect Fick method)
Lung volumes
The Ergocard CPX Professional allows performing static lung volumes measurement by using
the Nitrogen washout method.
This allows assessing the static lung volumes which are required for the complete
interpretation of the pulmonary function test. Lung capacities include total lung capacity
(TLC), functional residual capacity (FRC), vital capacity (VC), and inspiratory capacity (IC).
Lung volumes include residual volume (RV), expiratory reserve volume (ERV), tidal volume
(Vt), expiratory and inspiratory reserve volume (ERV, IRV).
N
2
washout technique also allows estimating heterogeneity of ventilation by Lung clearance
index (LCI).
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