Antireflux endoscopic injection therapy in post-pubertal patients via techniques adopted for the dilated ureteral orifice: a retrospective single-center study

Table 4 Numbers of succeeded ureters, n (%) according to each injection methods for each grade of hydrodistension and vesicoureteral reflux

Injection method	HD grade			VUR grade			p value ^#
	H1	H2	H3	II	III	IV
	(n = 1)	(n = 3)	(n = 12)	(n = 5)	(n = 8)	(n = 3)
I-HIT + STING			7 (70)*	2 (100)	3 (50)*	2 (100)	0.588
G-HIT + STING		1 (50)**	2 (100)	1 (50)**	1 (100)	1 (100)
G-HIT		1 (100)		1 (100)
STING	1 (100)				1 (100)

HD hydrodistension grade, VUR vesicoureteral reflux, I-HIT inserting hydrodistension implantation technique, G-HIT guide-wired hydrodistension implantation technique, STING subureteral transurethral injection
*One failed ‘dropped’ ureter, 1 downgraded ‘dropped’ ureter, and 1 downgraded ureter after collagen injection therapy
^**One downgraded ‘kinked’ ureter
^#Calculated by Fisher’s exact test

ISSN: 1471-2490