MIE Medical Research Ltd TF5-TX Benutzerhandbuch

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(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 
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 
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 
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 
the screen. 
 
 
Relevant parameters: Valsalva maneuver 
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