Table 2.

Different voiding parameters assessed in various studies and their values

Author	Study population		Voiding parameters assessed and their observed values (cm H2O)
Hjalmas et al[4 5]	1 – 3 years		Maximum voiding pressure	70cm H2O
Yeung et al[6]	Infants; mean age 6 months; after upper tract surgery		Maximum voiding pressure	117
Bachelard et al[3]	Asymptomatic infants - siblings of children with vesicoureteral reflux; mean age 1 month; VUR present in 25%		Maximum voiding pressure	127 (range – 84 – 211)
Bachelard et al[8]	Infants, diagnosis of UTI 11 days to 46 days ago		Peak voiding pressure	122 +/- 45
Taskinen et al[7]	Infants with PUV – preoperative		Maximum voiding pressure	112 (40 – 331)
	Infants with history of febrile UTI – control group		Maximum voiding pressure	91 (48 – 191)
	1 year after fulguration		Maximum voiding pressure	100 (60 – 193)
Wen et al[9]	Boys (3 days– 12 years) – no neurological or lower urinary tract pathology		Maximum voiding pressure	73.9 (16.6)	Detrusor pressure during voiding	66.1 (13.1)
Wen et al[10]	Infants (mean age 6 months) – history of renal dilatation or episodes of UTI		Maximum voiding detrusor pressure with pelvic floor activity	110+/-44	Maximum voiding detrusor pressure without pelvic floor activity	71+/-19
Ichino[11]	Children <3 years with congenital renal abnormalities or history of UTI	4Fr Catheter	PdetMax	102.0+/-22.5	True maximum voiding detrusor pressure (T-Pdetmax)	86.9+/-30.3
		7.7Fr Catheter		94.7+/-25.6		89.0+/-31.7
Guha Vaze[14]	11 months – 15 years age, follow up patients of PUV		Pdet Max	70+/- 38	Pdet Qmax	48+/-20
Present study	6 months to 16 years; patients with LUTS, VUR or follow up patients of PUV		PdetMax	62.1+/-32	Pdet Qmax	44+/-19.7
			<3 years	81+/-32
			>=3 years	55+/-30