30 Flowmaster User’s and Service Manual | LBL-000990 [B] Chapter 4
[E1+E2+E3+E4] Voided volume
Calculated: Average flow rate = ---------------------- = ------------------
[B1+B2+B3+B4] Flow time
Maximum flow rate (ml/s)
The maximum flow rate is the maximum measured value of the flow rate after
correction for artefacts. Calculated: Maximum flow rate = [F].
Time to maximum flow (s)
The time to maximum flow is the elapsed time from onset of flow to maximum
flow. Calculated: Time to maximum flow = [C].
Voided volume (ml)
The voided volume is the total volume expelled via the urethra.
Calculated: Voided volume = [E1+E2+E3+E4].
Flow time (s)
The flow time is the time over which measurable flow occurs.
Calculated: Flow time = [B1+B2+B3+B4]. When voiding is completed without
interruption, flow time is equal to voiding time.
Voiding time (s)
The voiding time is the total duration of micturition, including the interruptions.
Calculated: Voiding time = [D]. When voiding is completed without interruption,
voiding time is equal to flow time.
Intervals
The number of periods during which a continuous flow is measured.
For example, the flow curve displayed in figure 22 has 4 intervals.
Delay time (s)
The delay time is the time from the beginning of the investigation (the button
Start Miction is pressed) to the moment the patient started voiding. Delay time
is calculated with the database program only. Calculated: Delay time = [A].
4.3 Siroky Nomogram
Siroky nomograms are used as an aid to diagnose normal or obstructed
urinary flow in male patients.
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