MIE Medical Research Ltd TF5-TX Benutzerhandbuch
(c) 2001-2003 Advanced Medical Diagnostics Group, Ltd
Doc 125-05
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8.2.2. Ewing Battery: How to Perform the Valsalva Maneuver
Choose the ‘Valsalva maneuver’ option by clicking the button. Optionally, enter the
blood pressure values and start the measurement by clicking the ‘Test start’ button.
After starting you have to wait for 10 seconds, after which a message ‘Breath in
and blow into tube’ appears. Identical voice command is heard, as well. The
After starting you have to wait for 10 seconds, after which a message ‘Breath in
and blow into tube’ appears. Identical voice command is heard, as well. The
patient has to inhale deeply, and when starting the exhalation (while reaching 40
mmHg on the manometer), the examiner has to press the ‘Pressure reached’ key.
Under constant resistance of 40 mmHg during the expiration, the heart rate course is
mmHg on the manometer), the examiner has to press the ‘Pressure reached’ key.
Under constant resistance of 40 mmHg during the expiration, the heart rate course is
recorded for 15 seconds.
Afterwards a short signal beeps, and a message ‘Release
and breath normally’ appears, paralleled by a voice
command. The subject returns to normal breathing and has
to wait until the end of the test (some 20 seconds again).
Finally, a message ‘Test is finished’ closes the
command. The subject returns to normal breathing and has
to wait until the end of the test (some 20 seconds again).
Finally, a message ‘Test is finished’ closes the
examination. Please save the recorded data immediately,
again, by clicking the ‘Save’ button below. Results of the
test are available by clicking the ‘Results’ button below on
again, by clicking the ‘Save’ button below. Results of the
test are available by clicking the ‘Results’ button below on
the screen.
Relevant parameters: Valsalva maneuver
VR
VR
Valsalva-Ratio
t max
Timepoint of maximal heart rate
t min
Timepoint of minimal heart rate
HRrest
Resting heart rate
HR max
Maximal heart rate
HR min
Minimal heart rate
HR max / HR rest
Ratio maximal heart rate vers. rest
HR max - HR rest
Difference maximal heart rate minus rest
HR min / HR rest
Ratio minimal heart rate vers. rest