Inadvertent insertion of a Foley’s catheter through the orifice of a duplex ureter during catheterisation for laparotomy
© Springer-Verlag 2009
Received: 20 January 2009
Accepted: 25 February 2009
Published: 10 March 2009
We report a case of inadvertent insertion of a 14-Fr Foley's catheter through the orifice of one branch of a previously unrecognised duplex ureter. The unintentional insertion of the catheter occurred at urethral catheterisation during laparotomy for gynaecological malignancy and lead to false intraoperative identification of the female anatomy and injury to the ureter. Postoperatively, cystoscopy and intravenous urography confirmed the existence of a duplex ureter on the affected side.
Following recognition, it became apparent that the ureter had suffered injury by both the inflation of the catheter balloon and by the surgical dissection and was torn obliquely. The catheter was subsequently withdrawn, the ureter was repaired surgically, and a ureteric stent was inserted for 4 weeks. Postoperative recovery was uneventful.
Duplication of the ureter and the renal pelvis is a common anomaly with an incidence of approximately 0.8%, with unilateral duplication six times more frequent than bilateral .
Inadvertent ureteric catheterisation has been reported in the past in conjunction with microtip catheters during cystometry [2–4], during routine catheterization with a Foley's catheter in a case of a paraplegic patient , and in the case of long-term catheterisation of a fibrotic bladder . Alternatively, similar cases have been reported during retropubic suspension  and as the result of suprapubic catheter insertion . Such a complication may be associated with postoperative anatomical changes. .
Urethral catheterisation for urinary bladder drainage is a routine procedure at laparotomy. Accidental insertion of the tip of the Foley's catheter into the ureteric orifice may be avoided by gently tugging on the catheter after inflating the catheter tip .
To our knowledge, this is the first reported case of inadvertent catheterisation of a ureter during laparotomy in gynaecology, and it clearly points out an extremely rare but potentially hazardous complication. It has been advocated that accidental ureteral catheterisation may be associated with similar complications to those arising from ureteral stents or ureteroscopy, which include ureteral disruption, permanent dilatation, stricture, and upper tract infection .
Ureteric injury during abdominal and pelvic surgery has an incidence of 0.2–1%, with half of the injuries occurring during obstetric and gynaecological surgery .
Intraoperative recognition and repair of ureteric injuries may be associated with decreased morbidity and lower litigation risk .
In our case, the unintentional catheterisation of the ureter was an unexpected finding as the position of one ureter on each side of the pelvis was only identified intraoperatively, and the existence of a duplex ureter was not suspected despite the previous history of primary debulking surgery and the appropriate preoperative imaging of the abdomen with MRI scan. No reported cases of inadvertent catheterisation of a Duplex ureter exist so far.
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