scholarly journals Qualitative and quantitative evaluation of internal anal sphincter function in the newborn

Gut ◽  
1977 ◽  
Vol 18 (12) ◽  
pp. 1036-1044 ◽  
Author(s):  
V. E. Boston ◽  
S. Cywes ◽  
M. R. Q. Davies
Keyword(s):  
Anal Sphincter ◽  
Quantitative Evaluation ◽  
Internal Anal Sphincter ◽  
Sphincter Function ◽  
Anal Sphincter Function ◽  
Qualitative And Quantitative

Neural control of internal anal sphincter function

1987 ◽  
Vol 74 (8) ◽  
pp. 668-670 ◽  
Author(s):  
D. Z. Lubowski ◽  
R. J. Nicholls ◽  
M. Swash ◽  
M. J. Jordan
Keyword(s):  
Anal Sphincter ◽  
Internal Anal Sphincter ◽  
Neural Control ◽  
Sphincter Function ◽  
Anal Sphincter Function

Short-Term Effects of Neoadjuvant Chemoradiotherapy on Internal Anal Sphincter Function

2012 ◽  
Vol 55 (4) ◽  
pp. 465-472 ◽  
Author(s):  
Bruno Lorenzi ◽  
Alison F. Brading ◽  
Jacopo Martellucci ◽  
Francesco Cetta ◽  
Neil J. Mc.C. Mortensen
Keyword(s):  
Anal Sphincter ◽  
Internal Anal Sphincter ◽  
Neoadjuvant Chemoradiotherapy ◽  
Short Term ◽  
Sphincter Function ◽  
Anal Sphincter Function ◽  
Short Term Effects

Effect of lateral sphincterotomy on internal anal sphincter function

1995 ◽  
Vol 38 (7) ◽  
pp. 700-704 ◽  
Author(s):  
N. Williams ◽  
N. A. Scott ◽  
M. H. Irving
Keyword(s):  
Anal Sphincter ◽  
Internal Anal Sphincter ◽  
Lateral Sphincterotomy ◽  
Sphincter Function ◽  
Anal Sphincter Function

scholarly journals Internal Anal Sphincter Function Following Lateral Internal Sphincterotomy for Anal Fissure

2005 ◽  
Vol 242 (2) ◽  
pp. 208-211 ◽  
Author(s):  
Edward Ram ◽  
Dan Alper ◽  
Gideon Y. Stein ◽  
Zachar Bramnik ◽  
Zeev Dreznik
Keyword(s):  
Anal Fissure ◽  
Anal Sphincter ◽  
Internal Anal Sphincter ◽  
Lateral Internal Sphincterotomy ◽  
Sphincter Function ◽  
Anal Sphincter Function ◽  
Internal Sphincterotomy

scholarly journals O5 Dose mean opening pressure predominantly assess internal anal sphincter function

2021 ◽  
Vol 108 (Supplement_5) ◽  
Author(s):  
C M Byrne ◽  
A Sharma ◽  
E S Kiff ◽  
K J Telford
Keyword(s):  
Abdominal Surgery ◽  
Anal Sphincter ◽  
Internal Anal Sphincter ◽  
External Anal Sphincter ◽  
General Anaesthetic ◽  
Opening Pressure ◽  
Rectal Distension ◽  
Sphincter Function ◽  
Anal Sphincter Function ◽  
Inhibitory Reflex

Abstract Introduction We have suggested that mean Opening Pressure (Op) recorded during Anal Acoustic Reflectometry (AAR) predominantly represents IAS function however, the extent remains unknown. The aim was to investigate this by excluding the external anal sphincter during general anaesthetic (GA) with confirmed neuromuscular blockade (NMB). Method Patients undergoing elective abdominal surgery requiring GA+NMB were approached. Patients had pre-operative (awake) and during GA + NMB (asleep) AAR measurements performed. The rectoanal inhibitory reflex (RAIR) was assessed permitting the Op value to also be recorded when the IAS was inhibited. Op was recorded at prerectal distension and then after 100 mls of air was inflated within a balloon in the rectum (post-rectal distension). Result 19 patients were included. The values of Op (cmH20) and the reductions observed during the RAIR when awake/asleep are as follows: Awake Op: prerectal distension (64.94) and post-rectal distension (35.35) therefore mean change 29.59 cmH2O i.e. 44.6% reduction Asleep Op: prerectal distension (37.64) and post-rectal distension (15.55) therefore mean change 22.1 i.e. 55.3% reduction The contribution of the IAS to Op is calculated as follows: (Mean change Op awake x 100)/% reduction in RAIR asleep = IAS contribution awake (29.59cmH20 x 100)/55.3 = 53.51cmH20 Total mean Op awake—IAS contribution awake = EAS contribution awake 64.94cmH20–53.51cmH20 (82.4%) = 11.43cmH20 (17.6%) Conclusion The IAS accounts for 82.4% of Op at rest and it remains our hypothesis that Op primarily represents IAS function. Take-home Message Opening pressure primarily represents internal anal sphincter function.

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