User's Manual Part 4

FloPoint
®
Elite Uroflow System Clinical Application
User’s Manual page 105
Figure 42 shows examples of such a computer misinterpretation (solid arrow). In
situations such as this, the clinician must override the computer’s interpretation and
read the maximum manually from a smooth portion of the uroflow trace (open arrow
in Figure 42).
Figure 42. Artifactual uroflow peak produced by a spike
The (black arrow) identifies an artifactual spike that the uroflowmetry reads as the flow peak.
The correct peak flow (open arrow) must be read manually by the interpreter.
Low and High Voided Volumes
When total voided volumes are below 150 ml, “normal” flow rates become so low as
to make the test an insensitive indicator of an abnormally low flow rate. At voided
volumes of over 600 ml, the bladder may become decompensated, thereby
producing an artifactually low flow rate.
1
Therefore, it is important to avoid voided
volumes below 150ml and above 600ml. If such volumes are encountered, the test
should be repeated.