Primary Repair of Obstetric Anal Sphincter Injuries (OASIS) by Surgeons (PROS Study)

Obstetric Anal Sphincter Injury Clinical Trial

— PROS  

Official title:

Primary Repair of Obstetric Anal Sphincter Injuries (OASIS): a Survey of Emergency Surgeons' Experience

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05898945
• Other study ID #: 326703
• Status: Completed
• Start date: April 30, 2023
• Est. completion date: January 1, 2024

Study information

• Verified date: June 2023
• Source: London North West Healthcare NHS Trust
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Third- or fourth-degree perineal tears, collectively known as Obstetric Anal Sphincter Injuries or OASIS, may occur following a vaginal birth. OASIS may have catastrophic consequences, including anal incontinence. Satisfactory primary repair of OASIS is prudent in reducing the risk of maternal morbidity. Although Obstetricians are typically involved in the acute repair of OASIS, General Surgeons may be called to assist in cases of severe anatomical disruption.

The investigators have constructed a survey to explore the experience and current practice of Emergency Surgeons in relation to the repair of OASIS. The investigators will gather information including their level of exposure, understanding of current guidelines and confidence in performing these repairs. This will help the investigators identify if further training is required and will enable them to put forward recommendations for future practice. The findings will be presented at conferences and meetings and published in journals.

Description:

To date, there is little consensus on who should perform the primary repair of obstetric anal sphincter injuries (OASIS), with the Royal College of Obstetricians and Gynaecologists (RCOG) stating that the repair should be undertaken by a trained practitioner and that 'involvement of a colorectal surgeon will be dependent on local protocols, expertise and availability'.

In cases of severe anatomical disruption, the on-call general surgeon may be summoned upon to assist with the repair. They may not be a colorectal surgeon, and if they are, they may not specialise in pelvic floor surgery. A previous survey of practice amongst UK obstetricians and coloproctologists identified a wide variation in experience, methods of repair, follow up and recommendations for future delivery.

The aim of this study is to explore emergency surgeons' knowledge in relation to the acute repair of OASIS and to compare this with current recommendations and best practice guidance. This, in turn, will help identify if further training is required.

Satisfactory repair of acute OASIS is necessary for the following reasons:

• It may reduce the risk of anal incontinence, a stigmatising condition which may have substantial impact on an individual's quality of life and day-to-day living.

• By reducing the incidence of OASIS-related anal incontinence, the financial burden associated with the management of this condition as well as the risk of litigation will also be reduced

Recruitment information / eligibility

• Status: Completed
• Enrollment: 310
• Est. completion date: January 1, 2024
• Est. primary completion date: January 1, 2024
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: N/A and older

Eligibility

Inclusion Criteria:

• Registrar or above

• Cover an Emergency on-call rota for General Surgery

• Working in Great Britain and Ireland

Exclusion Criteria:

• • Senior House Officers or Foundation Doctors

• Doctors who do not cover an emergency rota

• Doctors working abroad

Related Conditions & MeSH terms

• Obstetric Anal Sphincter Injury
• Wounds and Injuries

Locations

Country	Name	City	State
United Kingdom	London North West University Hospital NHS Trust	London

Sponsors (1)

Lead Sponsor	Collaborator
London North West Healthcare NHS Trust

Country where clinical trial is conducted

United Kingdom, 

References & Publications (10)

Abramov Y, Feiner B, Rosen T, Bardichev M, Gutterman E, Lissak A, Auslander R. Primary repair of advanced obstetric anal sphincter tears: should it be performed by the overlapping sphincteroplasty technique? Int Urogynecol J Pelvic Floor Dysfunct. 2008 Aug;19(8):1071-4. doi: 10.1007/s00192-008-0592-0. Epub 2008 Apr 3. — View Citation

Andrews V, Sultan AH, Thakar R, Jones PW. Occult anal sphincter injuries--myth or reality? BJOG. 2006 Feb;113(2):195-200. doi: 10.1111/j.1471-0528.2006.00799.x. — View Citation

Bols EM, Hendriks EJ, Berghmans BC, Baeten CG, Nijhuis JG, de Bie RA. A systematic review of etiological factors for postpartum fecal incontinence. Acta Obstet Gynecol Scand. 2010 Mar;89(3):302-14. doi: 10.3109/00016340903576004. — View Citation

Fernando R, Sultan AH, Kettle C, Thakar R, Radley S. Methods of repair for obstetric anal sphincter injury. Cochrane Database Syst Rev. 2006 Jul 19;(3):CD002866. doi: 10.1002/14651858.CD002866.pub2. — View Citation

Fernando RJ, Sultan AH, Radley S, Jones PW, Johanson RB. Management of obstetric anal sphincter injury: a systematic review & national practice survey. BMC Health Serv Res. 2002 May 13;2(1):9. doi: 10.1186/1472-6963-2-9. — View Citation

Gurol-Urganci I, Cromwell DA, Edozien LC, Mahmood TA, Adams EJ, Richmond DH, Templeton A, van der Meulen JH. Third- and fourth-degree perineal tears among primiparous women in England between 2000 and 2012: time trends and risk factors. BJOG. 2013 Nov;120(12):1516-25. doi: 10.1111/1471-0528.12363. Epub 2013 Jul 3. — View Citation

Norderval S, Markskog A, Rossaak K, Vonen B. Correlation between anal sphincter defects and anal incontinence following obstetric sphincter tears: assessment using scoring systems for sonographic classification of defects. Ultrasound Obstet Gynecol. 2008 Jan;31(1):78-84. doi: 10.1002/uog.5155. — View Citation

Sioutis D, Thakar R, Sultan AH. Overdiagnosis and rising rate of obstetric anal sphincter injuries (OASIS): time for reappraisal. Ultrasound Obstet Gynecol. 2017 Nov;50(5):642-647. doi: 10.1002/uog.17306. — View Citation

Snooks SJ, Setchell M, Swash M, Henry MM. Injury to innervation of pelvic floor sphincter musculature in childbirth. Lancet. 1984 Sep 8;2(8402):546-50. doi: 10.1016/s0140-6736(84)90766-9. — View Citation

Sultan AH, Kamm MA, Hudson CN, Bartram CI. Third degree obstetric anal sphincter tears: risk factors and outcome of primary repair. BMJ. 1994 Apr 2;308(6933):887-91. doi: 10.1136/bmj.308.6933.887. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Use of Knowledge	Ascertainment of the knowledge of trainee, SAS and consultant (varying in age, sub-speciality and region) knowledge and skills in primary OASI repairs, in guideline and policy-related documents and adherence to management recommendations, using a questionnaire	study to be completed over a 12 month period
Primary	Training and confidence	Effect of the number of OASI repairs performed throughout the career of trainees, SAS and consultants (varying in age, sub-speciality and region) and training received, on confidence in performing OASI repairs, using a questionnaire	study to be completed over a 12 month period
Secondary	Knowledge-related attitudes	Accurate mapping of the pathway of patient follow-up processes following OASI repairs, using a questionnaire	study to be completed over a 12 month period