User's Manual Part 4

FloPoint
®
Elite Uroflow System Clinical Application
User’s Manual page 101
Figure 36. "Flat Top" Obstructive Flow Pattern
The peak on the spike at the end of the trace might have been misinterpreted by the
uroflowmetry as the peak flow.
Figure 37. Rounded Top Obstructive Flow Pattern
Irregular Patterns
With the exception of an occasional terminal spurt (e.g., Figure 36) or one or two
secondary voids in a normal man, irregular flow patterns are always either abnormal
or artifactual. There are two types of irregular flow patterns: a “fluctuating” flow
pattern, in which the repeated downward deflections do not fall below a measurable
flow rate, and an “intermittent” flow pattern characterized by the occurrence of
interruptions of varying durations between voiding episodes. Figure 38 shows an
example of a fluctuating flow pattern caused by abdominal straining: Figure 39 shows
an example of an intermittent flow pattern caused by detrusor-sphincter dyssynergia.