Is paradoxical contraction of puborectalis muscle of functional importance?
作者:
P. Jones,
D. Lubowski,
M. Swash,
M. Henry,
期刊:
Diseases of the Colon & Rectum
(OVID Available online 1987)
卷期:
Volume 30,
issue 9
页码: 667-670
ISSN:0012-3706
年代: 1987
出版商: OVID
关键词: Constipation;Electromyography;Anorectum;Pelvic floor disorders
数据来源: OVID
摘要:
&NA;Paradoxical contraction of the puborectalis muscle during simulated defecation straining (anismus) has been cited as a cause of constipation. The functional specificity of this phenomenon was evaluated in 79 patients, 50 with constipation, 21 with idiopathic perineal pain, and eight with solitary rectal ulcer syndrome. Electromyogram evidence of paradoxical puborectalis contraction was observed in 38 (76 percent), ten (48 percent), and four (50 percent) of these patients, respectively. All patients with solitary rectal ulcer syndrome had difficulty defecating; defecation was normal in all patients with perineal pain. These observations suggest that paradoxical contraction of the puborectalis muscle is not a specific finding, and that it is not the sole cause of constipation in patients with anismus.
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