Information Needed! Re: Gynae Surgical Outpatient Practices Vs Theatre Practices for Gynae Outpatient Procedures

At UHBW many of the procedures carried out in Gynae outpatients are done without creating a sterile field. However, when the same procedures are carried out in theatre a sterile field is created. 

I'm looking for any information regarding research that has already been carried out, practices in other Trusts and any guidelines/SOPs related to this topic.

Many thanks,

Tuesday