User's Manual Part 4

Clinical Application FloPoint
®
Elite Uroflow System
page 104 User’s Manual
Table 2. Diagnostic Significance of FloPoint
®
Elite Results
CURVE SHAPE
Pattern Shape
PEAK
FLOW
TIME TO
MAXIMUM
VOID TIME CONCLUSION
Continuous Flat
(“obstructive”
pattern)
Low Shortened
(Peak flow may
be difficult to
identify.)
Prolonged Outlet
obstruction*
Continuous Rounded
(“obstructive”
pattern)
Low Variable Normal Detrusor under-
activity
Continuous High Peak
short
duration and
(“superflow”
pattern)
High Shortened Shortened Detrusor
instability and/or
normal or
reduced output
resistance
Irregular** Fluctuating Variable No significance No
significance
Voluntary
abdominal
straining.
Detrusor-
sphincter
dyssynergia.
Dysfunctional
voiding
Irregular Interrupted Variable No significance No
significance
Same as
fluctuating
pattern.
Possibly a more
severe
condition.
* In female, rule out stress urinary incontinence and lower urinary tract infection.
** In male, rule out ”cruising”, (variable stream direction) and intermittent squeezing of penis or foreskin.
Artifacts and Pitfalls
Following are some events and conditions that can lead to misinterpretation of FloPoint
®
Elite test results.
“Spikes” or Rapid Fluctuations in the Curve
There are several potential causes of spikes in the FloPoint
®
Elite curve that can lead
to misinterpretation. The most common of these are: (1) mechanical disturbance of
the flow sensor and, (2) straining either during (Figure 42) or at the end (Figure 38) of
the void.
The most significant misinterpretation that can be caused by spikes is mistaken
identification by an automatic processor of a spike peak as the void maximum.
1,2,4,6