title: The effect of lateral internal sphincterotomy on resting anal sphincter pressures.
abstract: OBJECTIVE
  Anal fissures are one of the most common proctologic disorders. This study aimed to investigate alterations in anal sphincteric resting pressures after lateral internal sphincterotomy, which was performed for chronic anal fissure treatment.
  
  
  METHODS
  Fifty-six (68.3%) male and 26 (31.7%) female patients were included in this study. Patients complicated with fistula-in-ano, abscess, cancer, inflammatory bowel disease, dermatitis, poor general condition, allergy to any of the standard medications, previous history of anal trauma, previous anal surgery, or diagnosis of a neurological disease and patients who did not give consent to the trial were excluded from the study. Two groups were formed: a control group with 41 healthy volunteers and a study group with 41 chronic anal fissure patients. Preoperative and postoperative manometric anal measurements were compared.
  
  
  RESULTS
  Preoperative mean resting anal sphincter pressure was 51.29 mmHg for the control group and was 59.99 mmHg for the patient group. Although resting anal sphincteric pressures of the patient group remained within the physiological range, when compared with the control group there was a statistically significant difference. Postoperative mean resting anal sphincteric pressures of the patient group was 32.43 mmHg.
  
  
  CONCLUSIONS
  Lateral internal sphincterotomy decreases resting anal sphincter pressures effectively in chronic anal fissure patients.
authors.affiliation: Department of General Surgery, Erzincan University, Turkey. k.perker@yahoo.com.tr
authors.forename: Kemal
authors.initials: K
authors.lastname: Peker
authors.forename: Ismayil
authors.initials: I
authors.lastname: Yilmaz
authors.forename: Ismail
authors.initials: I
authors.lastname: Demiryilmaz
authors.forename: Abdullah
authors.initials: A
authors.lastname: Inal
authors.forename: Arda
authors.initials: A
authors.lastname: Işik
mesh_terms: D000328:Adult; D001003:Anal Canal / Q000503:physiopathology* / Q000601:surgery*; D005260:Female; D005401:Fissure in Ano / Q000503:physiopathology* / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008365:Manometry; D008875:Middle Aged; D011312:Pressure; D011446:Prospective Studies; D020127:Recovery of Function; D016896:Treatment Outcome; D055815:Young Adult