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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).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| good prognosis | A good prognosis within 1-year post-surgery was defined as healing of the internal and external openings of the fistula, no recurrence of the fistula, no secondary perianal infection, no symptoms of incontinence, no persistent pain, and the ability of the patient to perform activities independently |
| |
| poor prognosis | outcomes that did not meet good prognosis criteria indicated a poor prognosis |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| anal fistula surgery | Procedure | anal fistula surgery consists of;Fistulotomy and Fistulotomy with seton placement |
|
| Measure | Description | Time Frame |
|---|---|---|
| history of perianal abscess and fistula | Electronic medical record collection | between 1 January 2020 and 1 February 2023 |
| Age | Electronic medical record collection | between 1 January 2020 and 1 February 2023 |
| History of underlying diseases | Hypertension, heart disease and diabetes (Electronic medical record collection) | 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. | 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. | between 1 January 2020 and 1 February 2023 |
| Measure | Description | Time Frame |
|---|---|---|
| Sex | Electronic medical record collection | between 1 January 2020 and 1 February 2023 |
| Duration of preoperative symptoms | Electronic medical record collection |
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Inclusion Criteria:
Exclusion Criteria:
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This retrospective cohort study was conducted at The First Affiliated Hospital of China Medical University
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| Name | Affiliation | Role |
|---|---|---|
| Qiang Meng | First Hospital of China Medical University | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| The First Affiliated Hospital of China Medical University | Shenyang | Liaoning | 110001 | China |
All IPD that underlie results in a publication
Six months after the completion of the experiment
This study contains clinical data from medical records in our hospital. The datasets used and/or analysed during the current study are available from the study leader on reasonable request.
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| ID | Term |
|---|---|
| D012003 | Rectal Fistula |
| ID | Term |
|---|---|
| D007412 | Intestinal Fistula |
| D016154 | Digestive System Fistula |
| D004066 | Digestive System Diseases |
| D007410 | Intestinal Diseases |
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| perianal and perirectal space involvement-Deep posterior 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. | 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. | 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. | 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. | 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. | between 1 January 2020 and 1 February 2023 |
| Fistula origin | Electronic medical record collection | 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. | 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. | 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. | 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. | between 1 January 2020 and 1 February 2023 |
| between 1 January 2020 and 1 February 2023 |
| Smoking history | Electronic medical record collection | between 1 January 2020 and 1 February 2023 |
| Anesthesia method | Electronic medical record collection | between 1 January 2020 and 1 February 2023 |
| Alcohol history | Electronic medical record collection | between 1 January 2020 and 1 February 2023 |
| D005767 | Gastrointestinal Diseases |
| D012002 | Rectal Diseases |
| D005402 | Fistula |
| D020763 | Pathological Conditions, Anatomical |
| D013568 | Pathological Conditions, Signs and Symptoms |