EVACUATION PROCTOGRAPHY - AN INVESTIGATION OF RECTAL EXPULSION IN 20 SUBJECTS WITHOUT DEFECATORY DISTURBANCE
EVACUATION PROCTOGRAPHY - AN INVESTIGATION OF RECTAL EXPULSION IN 20 SUBJECTS WITHOUT DEFECATORY DISTURBANCE
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DOI:
10.1007/bf01889028
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发表时间:
1988-01-01
期刊:
影响因子:
--
通讯作者:
LENNARDJONES, JE
中科院分区:
文献类型:
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作者:
BARTRAM, CI;TURNBULL, GK;LENNARDJONES, JE
Evacuation proctography is a dynamic investigation of rectal expulsion that records the voluntary evacuation of thick barium paste on videotape. Evacuation is a passive phenomenon in a defined zone of the rectum, associated with pelvic floor descent of 3 cm from a resting position of the anorectal junction <2 cm above the plane of the ischial tuberosities. The anal canal does not open immediately; it takes about 4.5 sec to open to a maximum diameter of 1.5 cm, with rectal emptying in 11 sec. Anterior rectoceles commonly invert over the anal canal as the rectum collapses in at the end of evacuation.