Method of Sheen et al for Distinguishing a Ureterouterine from a Vesicouterine Fistula

Description

Sheen et al developed a simple method for distinguishing a ureterouterine (UU) or uretosalpingeal (US) fistula from a vesicouterine (VU) one. This would be useful in an outpatient or resource poor facility. The authors are from Chiayi Christian Hospital in Taiwan.

Patient selection: woman with urine being passed vaginally

Protocol:

(1) The woman empties her bladder.

(2) A catheter is placed into the bladder.

(3) A nontoxic dye such as methylene blue is instilled into the bladder via the catheter.

(4) The color of the urine in the vagina is observed.

UU/US Fistula	VU Fistula	Color Vaginal Urine
absent	absent	uncolored
present	absent	uncolored
absent	present	colored
present	present	colored

Limitation:

• This method cannot distinguish the presence of both UU/US and VU fistula from VU fistula alone. The presence of both together should be extremely rare.

To read more or access our algorithms and calculators, please log in or register.

Description

Specialty

ICD-10