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A fistula is defined as a communication between two major organs. A Rectovaginal Fistula (RVF) is a tract or hole between the rectum and the vagina. It allows the involuntary passage of faeces from the rectum through the vagina. Watch The Doctors TV: Rectovaginal Fistula explained.
A particular type of wrist fistula can be created in some patients at the base of the thumb (snuffbox fistula). It is also possible to use segments of vein in the upper forearm and create cephalic or basilic loops in the forearm but with connections to the brachial artery at the elbow.ow long a fistula lasts depends upon what type of operation is performed and the condition of the artery and vein before surgery. One year after surgery to create a fistula at the wrist (radiocephalic fistula) approximately 70-80% of patients will have a functioning fistula that they can use for dialysis.