User Manual

Spirodoc cod. 980156 Rev 1.3 EN 34/67
ENGLISH
In line with the publication "Standardised Lung Function Testing" of the
European Respiratory Society (Vol 6, Supplement 16, March 1993), the air
expired from the mouth is at a temperature of circa 33/34 °C.
The expired flow and volume, to be converted to BTPS conditions (37 °C)
must be increased by 2.6% - this is derived from the BTPS factor of 1.026 at a
temperature of 33°C, which represents a correction of 2.6%. In practice the
BTPS factor for the expired flow and volumes is therefore constant and equal
to 1.026.
For the inspired volumes and flows, the BTPS factor depends upon the
ambient temperature as the air inspired is at ambient temperature.
For instance at an ambient temperature of 20°C with relative humidity at 50%,
the BTPS factor is 1.102, a correction of +10.2%.
The correction of the inspired volumes and flows is made automatically as
the machine has an internal temperature sensor; the BTPS values are thus
calculated.
If a 3L syringe is used to make the calibration and if the spirobank II is
calibrated correctly then the FVC (syringe) value will be:
3.00 (FVC) x 1.026 (BTPS) = 3.08 L (FVC at BTPS).
If the ambient temperature is 20°C, the FIVC (syringe) value will be:
3.00 (FIVC) x 1.102 (BTPS) = 3.31 L (FIVC at BTPS).
The user must be aware that the volume of the syringe shown by the
machine is converted to BTPS conditions, so that the "increase" of the
results with respect to the expected values does not constitute an error.
For instance, if the calibration procedure is carried out with measured data:
FVC = 3.08 L and FIVC = 3.31 L at an ambient temperature of 20°C the
resulting correction factor becomes:
EXPIRATION .00%
INSPIRATION .00%
This does not represent an error, but is a logical consequence of the above
detailed explanation.
3.7 Patient Data
From the main screen the user can access the patient data management by using the
icon . . By entering in the menu it is possible to:
Modify the current patient data
Create a new patient
3.7.1 Inserting data of a new patient
Touch the icon and insert the patient information in the required sequence.
First screen (name)
Write the name of the patient with the touchscreen keyboard. Touch the OK icon to
move on to the next screen
Second screen (sirname)
As above insert the sirname of the patient and touch the OK icon.