3.3 TVM increases compliance of late filling
Notably, in pre-operative PVA, the trajectory markedly deviated to the
right and downwards at the late half compared to the early half of the
filling stage (Figure 3C PRE), indicating the pre-operative compliance
was decreased at late filling stage. The heterogeneity of compliance
before TVM was confirmed by that the regression line of the late half of
the filling stage (blue C2/2) tilted clockwise compared to that of the
early half (green C1/2; Figure 2C PRE). Quite differently,
post-operative PVA displayed a relatively stable trajectory without
marked deviation that resulted in a fairly constant slope through the
entire filling stage (Figure 2D POST). The homogeneity of compliance in
the post-operative PVA was confirmed by that the regression lines of the
early and late halves of the filling stage (green C1/2 and blue C2/2,
respectively) displayed resemble slopes (Figure 2D POST). Summarize data
measured pre-operatively showed when compared to the mean compliance of
the early half of the filling stage (Figure 3C PRE C1/2) that of the
late half (C2/2) was significantly decreased before operation
(p<0.01, N=22). In contrast, after TVM, no statistical
difference was evidenced between the mean compliance of the early and
late filling (Figure 3E POST C1/2 and C2/2, respectively;
p>0.05, N=22). Moreover, while it failed to statistically
affect C1/2 (p>0.05, N=22), TVM post-operatively increased
C2/2 when compared with the pre-operative control (p<0.01,
N=22), indicating the increased C2/2 contributed essentially to the
TVM-enhanced bladder compliance.