The approach to the difficult urethral catheterization among urology residents in the United States

PURPOSE: To determine the prevalence of different approaches to the difficult urethral catheterization (DUC) among urology residents (UR) in the United States (US). MATERIALS AND METHODS: An email invitation to participate in an online survey regarding DUC was sent to 267 UR and to 22 urology program coordinators for them to forward to their residents. 142 UR completed the survey. RESULTS: After the initial unsuccessful attempt by a nurse, 92 percent of UR attempted a catheter prior to resorting to other modalities. The most common choice of the first catheter was a Coude (76 percent) size 18F (51 percent). For situations where multiple sizes and types of catheters (12 - 20F) were used without success, 3 scenarios were proposed: 1) Catheter passed the bulbomembranous urethra (BMU) and patient had previous history of transurethral resection of the prostate or radical retropubic prostatectomy, 2) Catheter passed the BMU and no urologic history, 3) Catheter did not pass the BMU and no urologic history. Flexible cystoscopy was used in 74 percent, 62 percent and 63 percent; blind passage of a glidewire was second with 15 percent, 23 percent and 20 percent; and blind use of filiforms and followers was chosen in 7 percent, 9 percent and 9 percent of the scenarios respectively. CONCLUSIONS: The most common approach to the DUC among UR in the US involves using an 18F Coude catheter first. After trying one or more urethral catheters, UR most commonly resort to flexible cystoscopy as opposed to the blind placement of glide wires or filiforms/followers.

Difficult male urethral catheterization: a review of different approaches

PURPOSE: To review and compare the different methods for difficult male urethral catheterization described in selected literature. MATERIALS AND METHODS: A PubMed search was done with the terms "difficult", "failed", or "complications" and "urethral catheterization", "transurethral catheterization", "Foley catheter", "urethral catheter" or "filiforms and followers". All articles addressing the issue of difficult adult male urethral catheterization were included. RESULTS: Six main approaches were identified on the 14 articles included for review: 1) Passage of either a Glidewire, guide wire or filiform under direct vision; 2) Blind passage of a filiform, guide wire, Glidewire or hydrophilic catheter; 3) "The Peel-away® sheath placed on a cystoscope/resectoscope technique"; 4) "The rigid ureteroscope placed inside the 22F Foley technique"; 5) Suprapubic catheterization; and 6) "The instillation of 60 cc of saline through the catheter as it is advanced technique". CONCLUSION: There is a paucity of prospective data comparing the benefits, risks, success rates and complications of the different approaches for difficult Foley catheter placement. Our suggested approach starts with the initial attempt at urethral catheterization with an 18F coude and a 12F silicone catheter. If these fail, using a flexible cystoscope or the blind Glidewire technique are reasonable alternatives. If dilatation of a stricture is necessary, ureteric dilatators or a urethral balloon dilatator are recommended.