Results 201 to 210 of about 9,782 (234)

The internal anal sphincter can not close the anal canal completely

International Journal of Colorectal Disease, 1992
We determined the maximum closing capability of the internal anal sphincter muscle ring in vitro and in vivo. The internal sphincter, 4 to 6 mm thick, cannot close the anal canal hermetically, not even during maximal contraction. The blood-filled anal cushions have to fill up an intrasphincteric gap of at least 7 to 8 mm in diameter.
B, Lestar, F, Penninckx, H, Rigauts, R, Kerremans   +3 more
openaire   +2 more sources

Anal Canal Pressure After Ileal Pouch-Anal Anastomosis with Strengthened Internal Anal Sphincter

Diseases of the Colon & Rectum, 2004
The aim of sphincter-saving operative techniques and creation of intestinal reservoirs is to improve the quality of life for patients with restorative prococolectomy.In this study, 48 consecutive patients (19 males and 29 females of ages between 19 and 55 years; mean age, 35.52 years) with ulcerative colitis and familial adenomatous polyposis underwent
Georgi L, Kobakov, Daniel V, Kostov, Temelko D, Temelkov   +2 more
openaire   +2 more sources

Internal Anal Sphincter Achalasia (IASA)

2019
The concept of internal anal sphincter achalasia (IASA) was first described by Davidson and Bauer in 1958. Their reported three cases with constipation since birth and presented with fecal impaction and soiling had moderately dilated rectum without any zone of narrowing in barium enemas.
openaire   +1 more source

Internal Anal Sphincter Electromyography: Correlation with Resting Anal Pressure

1992
Little is known about the electromyographic (EMG) activity of the internal anal sphincter (IAS) in vivo, in man. IAS activity is responsible for approximately 80% of resting anal canal pressure (RP), but EMG activity is said to correlate poorly with RP.
G. S. Duthie, D. C. C. Bartolo
openaire   +1 more source

New method for internal anal sphincter measurements: feasibility study

International Journal of Computer Assisted Radiology and Surgery, 2010
The aim of this paper is to provide a method for measuring the internal anal sphincter on the basis of the quantitative analysis of three-dimensional endosonographic images. A software calculates a large set of measurements which are able to describe the three-dimensional shape of the muscle.A software provides four types of measurements: thickness ...
SBOARINA, Andrea, A. Minicozzi, C. Cordiano   +2 more
openaire   +3 more sources

The Nerve Supply of the Internal Anal Sphincter

Australian and New Zealand Journal of Surgery, 1972
The traditional concept of a motor sympathetic and an inhibitory parasympathetic nerve supply to the internal anal sphincter has no experimental support in the human. Inhibitory fibres are present in the sympathetic thoracolumbar outflow and can also be demonstrated by organ‐bath techniques. However, these may not be adrenergic nerves.
openaire   +2 more sources

Internal anal sphincter and endosonography

Diseases of the Colon & Rectum, 1999
V, de Parades, C, Parisot, P, Atienza
openaire   +2 more sources

Approaches to Internal Anal Sphincter Augmentation

2012
As disappointing as the results have been relative to surgically improving external anal sphincter function, the ability to improve internal anal sphincter function has been even worse. A plethora of techniques including direct repair, overlapping repair, dynamic ­graciloplasty, stimulated graciloplasty, gluteoplasty, artificial bowel sphincter, and ...
openaire   +1 more source

Internal sphincter spasm in anal fissure

British Journal of Surgery, 1997
J N, Lund, J H, Scholefield
openaire   +3 more sources

Internal anal sphincter repair

International Journal of Colorectal Disease, 1998
F. Abbasakoor, A. R. Morgan J. Beynon, N. D. Carr   +2 more
openaire   +1 more source