Therapeutic effects of the TST36 stapler on rectocele combined with internal rectal prolapse

Table 1 Longo’s obstructed defecation syndrome score

Question	Response (score)
Defecation frequency	1-2 def every; 1–2 d (0)	2 def/wk or 3 def/d (1)	1 def/wk or 4 def/d (2)	< 1 def/wk or > 4 def/d (3)
Straining intensity	N or light (0)	Moderate (1)	Intensive (2)
Straining extension		Short time (1)	Prolonged (2)
Sensation of incomplete evacuation	Never (0)	≤ 1/wk (1)	2/wk (2)	> 2/wk (3)
Perineal discomfort	Never (0)	≤ 1/wk (1)	2/wk (2)	> 2/wk (3)
Activity reduction	Never (0)	< 25% activity (1)	25%-50% activity (4)	> 50% activity (6)
Laxatives	Never (0)	< 25% def (1)	25-50% def (3)	> 50% def (5)	Always (7)
Enemas	Never (0)	< 25% def (1)	25-50% def (3)	> 50% def (5)	Always (7)
Digitation	Never (0)	< 25% def (1)	25-50% def (3)	> 50% def (5)	Always (7)

Def: Defecation.

Table 2 Obstructed defecation syndrome scores and main symptom scores in patients before and after treatment

Time	Cases	ODS score	Defecation frequency score	Defecation time/straining intensity score	Sensation of incomplete evacuation score
Before treatment	49	17.71 ± 1.29	2.57 ± 0.50	3.39 ± 0.57	2.71 ± 0.46
1-yr follow-up	49	6.29 ± 0.71	0.86 ± 0.8	1.43 ± 0.91	1.14 ± 0.84
t value		108.70	36.77	17.98	22.00
P value		< 0.05	< 0.05	< 0.05	< 0.05

ODS: Obstructed defecation syndrome.

Table 3 Measurement of anorectal pressure before and after treatment

Time	Anal canal resting pressure in mmHg	Maximum squeeze pressure in mmHg	Initial defecation threshold in mL	Maximum defecation threshold in mL
Before treatment	76.14 ± 1.14	158.14 ± 1.74	86.86 ± 1.98	156.71 ± 1.68
1-yr follow-up	75.39 ± 1.10	156.29 ± 1.85	66.14 ± 2.38	135.57 ± 1.86
t value	7.07	15.45	205.06	418.61
P value	< 0.05	< 0.05	< 0.05	< 0.05

Table 4 360° ultrasound measurement of the degree and depth of rectocele in the rectal cavity

Time	Cases	Scale	Resting phase in mm	Defecation phase in mm
Before treatment	49	III	16.86 ± 1.26	38.86 ± 1.66
1-yr after operation	49	I	5.43 ± 1.19	9.53 ± 1.23
t value			160.00	164.48
P value			< 0.05	< 0.01