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.