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Nexam Pro User Manual
Chapter 4
Whenever a Permission to void marker was placed during the investigation,
the hesitancy is calculated as the elapsed time between placement of the
Permission to void marker and the onset of the flow.
Calculated: hesitancy = [A]
Average flow
The average flow is the total voided volume divided by the flow time. The
average flow rate is only meaningful if flow is continuous and without terminal
dribbling. It is calculated as voided volume divided by the flow time.
[E1 + E2 + E3 + E4]
Voided volume (ml)
Calculated: Average flow rate = -------------------------- = --------------------
[B1 + B2 + B3 + B4]
Flow time (s)
When Flow markers are present the average flow rate is calculated between
the first and last flow marker.
Corrected Qmax
The corrected Qmax is the square root of the voiding volume.
Calculated: Corrected Qmax =
(voided volume)
Residual urine
The residual volume is the volume of urine left in the bladder after micturition.
This parameter can be entered manually after the investigation.
Miction Index
The Miction Index (MI) is calculated as Voided Volume (ml) divided by
micturition time (s) (Flowtime).
Voided volume (ml)
Calculated: Miction index =
-------------------------- -
Residual urine (ml)
Flow time (s)
When one of the parameters is unknown or when the Flow time is zero, the
Miction Index parameter will be reported as
“-”.
A Miction Index < 10 is considered pathologic.
A Miction Index > 10 is considered healthy.
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