2Anatomy of the rectum, anal canal and pelvic floor

2013 ◽  
pp. 39-59
Keyword(s):  
Anal Canal ◽  
Pelvic Floor

Endoluminal ultrasound defines anatomy of the anal canal and pelvic floor

1992 ◽  
Vol 35 (5) ◽  
pp. 465-470 ◽  
Author(s):  
Joe J. Tjandra ◽  
Jeffrey W. Milsom ◽  
Vito M. Stolfi ◽  
Ian Lavery ◽  
John Oakley ◽  
...  
Keyword(s):  
Anal Canal ◽  
Pelvic Floor ◽  
Endoluminal Ultrasound

scholarly journals ANORECTAL MANOMETRY STANDARD OF A BRAZILIAN POPULATION AT PRODUCTIVE AGE WITHOUT PELVIC FLOOR DISORDERS: A PROSPECTIVE VOLUNTEERED STUDY

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Rodrigo Ambar PINTO ◽  
Isaac José Felippe CORREA-NETO ◽  
Leonardo Alfonso BUSTAMANTE-LOPEZ ◽  
Caio Sergio R. NAHAS ◽  
Carlos Frederico S. MARQUES ◽  
...  
Keyword(s):  
Anal Canal ◽  
Pelvic Floor ◽  
Anorectal Manometry ◽  
Pelvic Floor Disorders ◽  
Average Length ◽  
Male Gender ◽  
Sphincter Pressure ◽  
Male And Female ◽  
Functional Anal ◽  
Normal Standards

ABSTRACT Background: Due to the lack of normal standards of anorectal manometry in Brazil, data used are subject to normality patterns described at different nationalities. Aim: To determine the values and range of the parameters evaluated at anorectal manometry in people, at productive age, without pelvic floor disorders comparing the parameters obtained between male and female. Methods: Prospective analysis of clinical data, such as gender, age, race, body mass index (BMI) and anorectal manometry, of volunteers from a Brazilian university reference in pelvic floor disorders. Results: Forty patients were included, with a mean age of 45.5 years in males and 37.2 females (p=0.43). According to male and female, respectively in mmHg, resting pressures were similar (78.28 vs. 63.51, p=0.40); squeeze pressures (153.89 vs. 79.78, p=0.007) and total squeeze pressures (231.27 vs. 145.63, p=0.002). Men presented significantly higher values of anorectal squeeze pressures, as well as the average length of the functional anal canal (2.85 cm in male vs. 2.45 cm in female, p=0.003). Conclusions: Normal sphincter pressure levels in Brazilians differ from those used until now as normal literature standards. Male gender has higher external anal sphincter tonus as compared to female, in addition a greater extension of the functional anal canal

scholarly journals Endorectal ultrasound (ERUS) in pelvic disorders

2006 ◽  
Vol 53 (2) ◽  
pp. 117-120 ◽  
Author(s):  
G. Barisic ◽  
Z. Krivokapic ◽  
V. Markovic ◽  
D. Saranovic ◽  
V. Kalezic ◽  
...  
Keyword(s):  
Anal Canal ◽  
Pelvic Floor ◽  
Electronic Devices ◽  
Pelvic Floor Muscles ◽  
Endorectal Ultrasound ◽  
Canal Wall ◽  
Pathologic Process ◽  
Ultrasound Waves ◽  
Complex Process ◽  
Sphincter Defects

Endorectal ultrasound (ERUS) imaging is a complex process using electronic devices to control ultrasound waves and produce images of anatomic structures. It is a simple, cheep and well-tolerated procedure that provides excellent images of rectal and anal canal wall and pelvic floor muscles together with surrounding organs and tissues. The direct imaging of anal canal and pelvic floor muscles with surrounding tissues allows one to identify sphincter defects, anorectal abscesses and fistulas as well as great variety of benign and malignant pathology of the pelvis. Basically, techniques for ERUS are very similar, but there are some slight modifications regarding equipment, indications, and localization of pathologic process. We describe the technique, indications, results and pitfalls of ERUS with the Bruel & Kjaer type 1850 endosonic probe with 7 and 10 MHz transducers in benign pelvic disorders. .

scholarly journals Anatomically Realistic Three-Dimensional Meshes of the Pelvic Floor & Anal Canal for Finite Element Analysis

2008 ◽  
Vol 36 (6) ◽  
pp. 1060-1071 ◽  
Author(s):  
Kimberley F. Noakes ◽  
Ian P. Bissett ◽  
Andrew J. Pullan ◽  
Leo K. Cheng
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Anal Canal ◽  
Pelvic Floor ◽  
Three Dimensional ◽  
Element Analysis

scholarly journals Biological tissue graft for pelvic floor reconstruction after cylindrical abdominoperineal excision of the rectum and anal canal

2009 ◽  
Vol 13 (3) ◽  
pp. 257-258 ◽  
Author(s):  
C. L. Boereboom ◽  
N. F. S. Watson ◽  
R. Sivakumar ◽  
N. G. Hurst ◽  
W. J. Speake
Keyword(s):  
Anal Canal ◽  
Pelvic Floor ◽  
Biological Tissue ◽  
Abdominoperineal Excision ◽  
Pelvic Floor Reconstruction ◽  
Tissue Graft

Effects of pelvic floor muscle contraction on anal canal pressure

2007 ◽  
Vol 292 (2) ◽  
pp. G565-G571 ◽  
Author(s):  
Bikram S. Padda ◽  
Sung-Ae Jung ◽  
Dolores Pretorius ◽  
Charles W. Nager ◽  
Debbie Den-Boer ◽  
...  
Keyword(s):  
Anal Canal ◽  
Pelvic Floor ◽  
Muscle Contraction ◽  
Pelvic Floor Muscle ◽  
Proximal Part ◽  
Puborectalis Muscle ◽  
Pelvic Floor Muscle Contraction ◽  
Pelvic Floor Contraction ◽  
Vaginal Probe ◽  
Vaginal Distension

The role of pelvic floor muscle contraction in the genesis of anal canal pressure is not clear. Recent studies have suggested that vaginal distension increases pelvic floor muscle contraction. We studied the effects of vaginal distension on anal canal pressure in 15 nullipara asymptomatic women. Anal pressure, rest, and squeeze were measured using station pull-through manometry techniques with no vaginal probe, a 10-mm vaginal probe, and a 25-mm vaginal probe in place. Rest and squeeze vaginal pressures were significantly higher when measured with the 25-mm probe compared with the 10-mm probe, suggesting that vaginal distension enhances pelvic floor contraction. In the presence of the 25-mm vaginal probe, rest and squeeze anal pressures in the proximal part of the anal canal were significantly higher compared with no vaginal probe or the 10-mm vaginal probe. On the other hand, distal anal pressures were not affected by any of the vaginal probes. Ultrasound imaging of the pelvic floor revealed that vaginal distension increased the anterior-posterior length of the puborectalis muscle. Atropine at 15 μg/kg had no influence on the rest and squeeze anal pressures with or without vaginal distension. Our data suggest that pelvic floor contractions increase pressures in the proximal part of the anal canal, which is anatomically surrounded by the puborectalis muscle. We propose that pelvic floor contraction plays an important role in the fecal continence mechanism by increasing anal canal pressure.

Sign in / Sign up

Export Citation Format

Share Document