The goal of this observational study is to understand the effects of anatomical factors, etiology, and complexity of anal fistula on the prognosis of patients undergoing anal fistula surgery within one year post-operation.The main question it aims to answer is: Which factors are indicative of the prognosis of anal fistula surgery? Which factors are landmark factors of anal fistulas? Participants who have already undergone anal fistula surgery at our hospital will receive outpatient and telephone follow-up to assess their prognosis.
The search function of the electronic medical record system and surgical records were used to screen patients. For the enrolled patients, the electronic medical record system, imaging report query system, medical order system, outpatient follow-up and telephone follow-up were used to collect data Data were entered into Excel 2021 (Microsoft Corp., Redmond, WA, USA) and checked for errors before conducting statistical analyses using R software (version 4.2.2; The R Foundation, Vienna, Austria).
Study Type
OBSERVATIONAL
Enrollment
326
anal fistula surgery consists of;Fistulotomy and Fistulotomy with seton placement
The First Affiliated Hospital of China Medical University
Shenyang, Liaoning, China
history of perianal abscess and fistula
Electronic medical record collection
Time frame: between 1 January 2020 and 1 February 2023
Age
Electronic medical record collection
Time frame: between 1 January 2020 and 1 February 2023
History of underlying diseases
Hypertension, heart disease and diabetes (Electronic medical record collection)
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-perianal subcutaneous space
Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-Posterior superficial anal space
Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-Deep posterior anal space
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Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-Anterior superficial anal space
Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-Deep anterior anal space
Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-Submucosal space
Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-Intersphincteric anal space
Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
Fistula origin
Electronic medical record collection
Time frame: between 1 January 2020 and 1 February 2023
fistula traversal through the internal and external sphincters
Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the anal sphincters was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-Ischioanal space
Preoperative imaging examination data, electronic medical and record-surgery records were collected.The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-Ischiorectal space
Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
perianal and perirectal space involvement-Pelvirectal space
Preoperative imaging examination data, electronic medical and record-surgery records were collected. The extent of anal fistula invasion into the perianal and rectal spaces was assessed based on preoperative imaging examinations and observations made during surgery. All surgical procedures were performed and documented by Associate Chief Physicians in our department. In cases in which the intraoperative findings differed from the imaging results, the findings observed during surgery were considered definitive.
Time frame: between 1 January 2020 and 1 February 2023
Sex
Electronic medical record collection
Time frame: between 1 January 2020 and 1 February 2023
Duration of preoperative symptoms
Electronic medical record collection
Time frame: between 1 January 2020 and 1 February 2023
Smoking history
Electronic medical record collection
Time frame: between 1 January 2020 and 1 February 2023
Anesthesia method
Electronic medical record collection
Time frame: between 1 January 2020 and 1 February 2023
Alcohol history
Electronic medical record collection
Time frame: between 1 January 2020 and 1 February 2023