Can rectal catheters be avoided during paediatric urodynamic studies?

Figures & data

Figure 1. An example of two sets of urodynamic trace for the same patient. (A) Multi-channel trace with P_det (light blue), P_ves (blue), P_abd (red), flow (green). (B) Single-channel P_ves trace obtained by removing P_abd.

Table 1. Demographic data.

Variable	Value
Gender distribution, n (%)
Boys	86 (74.8)
Girls	29 (25.2)
Age, years, median (interquartile range)	12 (8–15)
Indication for UDS, n (%)
Neurogenic bladder	56 (48.6)
PUV	41 (35.6)
Anatomical abnormalities	14 (12.2)
Dysfunctional voiding	4 (3.5)

Table 2. Comparison of interpretation of compliance and DO between single- and multi-channel studies.

		Compliance (multi-channel cystometry), n
		Decreased	Normal
Compliance (single-channel cystometry), n	Decreased	70	6
	Normal	0	39
	Total	70	45
		DO (multi-channel cystometry), n
		Overactive	Normal
DO (single-channel cystometry), n	Overactive	42	5
	Normal	2	66
	Total	44	71

Table 3. Breakdown of children in each category who were included for analysis of voiding pressures.

	Excluded due to low voided volume and low cystometric capacity (n = 19)	Excluded due to straining to void (n = 55)	Voiding phase analysed by comparing the pressure at Qmax (n = 41)
Neurogenic bladder (n = 56)	11	45	0
PUV (n = 41)	3	3	35
Anatomical abnormalities (n = 14)	5	5	4
Voiding dysfunction (n = 4)	0	2	2