Mini‐Catheter Used for Bladder Drainage Following Stress‐Incontinence Surgery and the Factors Relating to Drainage Failure

Objectives: To determine the most effective length for the mini‐catheter and to discuss factors relating to drainage failure. Methods: Prospective study of a No. 8 silastic feeding tube for bladder drainage omits the necessity of additional catheterization for measuring residual urine. This two‐part study in which 146 patients took part, first, determined the suitable length for insertions for the perforated portion and the imperforated portion; then, gauged the effectiveness of the mini‐catheter with desired proportions. Results: Drainage is better when the imperforated portion is at least 5 cm in length (p = 0.0129). The length of the perforated portion, on the other hand, has less impact of the resultant drainage provided that its length does not exceed 5 cm. Beyond this length, an obstruction often occurs. There were 2 obstructions (1.3%) induced by blood clot as well as 9 patients (5.8%) who suffered from one, or more, complications attributed to the mini‐catheter for reasons other than the length of insertion. Conclusions: When care is taken in creating a mini‐catheter of the proper proportions, it offers many advantages and very few complications to gynecologists and patients alike.