Cosmed Quark PFT, Руководство пользователя

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114 - Quark PFT User Manual
Events management during exercise testing
Flow Volume loops
This test is useful during exercise to detect abnormalities in the mechanics of ventilation
in patients with pulmonary/ventilatory limitations to exercise.
The test consists in acquiring some flow/volume loops during exercise at different
workloads and overlapping them on the rest maximal flow/volume loop of a Forced
Vital Capacity test.
The majors information that you can get from this manoeuvres are the flow reserve
(flow distance from the peak flow of the F/V loop during exercise to the corresponding
flow on the superimposed F/V loop at rest) and the volume reserve (volume distance
from the maximum volume of the F/V loop during exercise to the corresponding
volume on the superimposed F/V loop at rest).
The manoeuvre consists in the following phases:
•
Acquiring some Flow/Volume loops during the exercise
•
Making the patient inspire completely up to TLC level (this is necessary to place
the loop correctly into the rest F\V loop of the forced Vital Capacity test)
• Overlapping the F/V loop acquired during exercise and the F/V loop performed at
rest.
Flow Volume loop during the test
1. Start with normal Exercise test and begin the memorisation of breath values ( F2 )
2. During a steady state select F/V loops form Test/Event...
3. As soon as 2 or 3 complete loops have been acquired ask the patient to inspire
completely up to TLC level and press F3 to stop the acquisition.
O2, CO2 vs Time
The O2, CO2 event is useful to check the real-time readings of the O2 and CO2 signals
during the test.
O2, CO2 vs Time during the test
1. Start with normal Exercise test and begin the memorisation of breath values ( F2 )
2. During a steady state select O2, CO2 vs Time from Test/Event...
3. As soon as 5 or 6 complete breaths have been acquired press F3 to stop the
acquisition.
O2 Saturation (optional)
The O2 Saturation event is useful to check the quality of SpO2 signal acquired by the
on-board Oxymeter (if available) during the test.