Rectal hyposensitivity and functional anorectal outlet obstruction are common entities in patients with functional constipation but are not significantly associated.
10.3904/kjim.2013.28.1.54
- Author:
Tae Hee LEE
1
;
Joon Seong LEE
;
Su Jin HONG
;
Seong Ran JEON
;
Soon Ha KWON
;
Wan Jung KIM
;
Hyun Gun KIM
;
Won Young CHO
;
Joo Young CHO
;
Jin Oh KIM
;
Ji Sung LEE
Author Information
1. Institute for Digestive Research, Soonchunhyang University College of Medicine, Seoul, Korea. drjslee@dreamwiz.com
- Publication Type:Original Article
- Keywords:
Functional defecation disorder;
Intussusception;
Rectocele;
Rectal hyposensitivity
- MeSH:
Adult;
Aged;
Aged, 80 and over;
Anus Diseases/diagnosis/*physiopathology;
Constipation/diagnosis/*physiopathology;
Cross-Sectional Studies;
*Defecation;
Defecography;
Electromyography;
Female;
Humans;
Intussusception/diagnosis/*physiopathology;
Male;
Manometry;
Middle Aged;
Pressure;
Rectocele/diagnosis/*physiopathology;
Rectum/*innervation;
Retrospective Studies;
*Sensory Thresholds;
Young Adult
- From:The Korean Journal of Internal Medicine
2013;28(1):54-61
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND/AIMS: The causes of functional anorectal outlet obstruction (outlet obstruction) include functional defecation disorder (FDD), rectocele, and rectal intussusception (RI). It is unclear whether outlet obstruction is associated with rectal hyposensitivity (RH) in patients with functional constipation (FC). The aim of this study was to determine the association between RH and outlet obstruction in patients with FC. METHODS: This was a retrospective study using a prospectively collected constipation database, and the population comprised 107 patients with FC (100 females; median age, 49 years). We performed anorectal manometry, defecography, rectal barostat, and at least two tests (balloon expulsion test, electromyography, or colon transit time study). RH was defined as one or more sensory threshold pressures raised beyond the normal range on rectal barostat. We investigated the association between the presence of RH and an outlet obstruction such as large rectocele (> 2 cm in size), RI, or FDD. RESULTS: Forty patients (37.4%) had RH. No significant difference was observed in RH between patients with small and large rectoceles (22 [44.9%] vs. 18 [31%], respectively; p = 0.140). No significant difference was observed in RH between the non-RI and RI groups (36 [36.7%] vs. 4 [30.8%], respectively; p = 0.599). Furthermore, no significant difference in RH was observed between the non-FDD and FDD groups (19 [35.8%] vs. 21 [38.9%], respectively; p = 0.745). CONCLUSIONS: RH and outlet obstruction are common entities but appear not to be significantly associated.
