Abstract
Objective To investigate curative efficacy of transurethral endoscopic surgery for foreign body-induced lower urinary tract injury. Methods A retrospective case series study was conducted to analyze the clinical data of 31 patients with foreign body-induced lower urinary tract injury admitted to Henan Provincial People's Hospital from January 1998 to January 2018. There were 27 males and four females, aged 6-68 years [(27.1±16.3)years]. Foreign bodies were located at the bladder in 12 patients, at urethra in 16, and at bladder and urethra in three. The foreign bodies were placed into the body by patients themselves in 23 patients, by other people in one, iatrogenic implantation in six, and by unknown approach in one. All patients underwent urethral surgeries, and individualized treatment plan was formulated according to the specific conditions such as the foreign body type, size, shape, location, activity and combined injury. The success rate, operation time and hospitalization time were recorded. The sexual function of the married males was evaluated by international index of erectile function-5 (IIEF-5) (IIEF-5 score≥22 points as normal) before and after the operation. The urination after the operation was evaluated by the maximum urinary flow rate (Qmax) (Qmax<15 ml/s as abnormal) and the complications were recorded. Results All the patients underwent successful surgeries and the foreign bodies were removed, including 26 patients who underwent transurethral endoscopic surgery alone with success rate of 84% and five patients underwent open surgery due to failed transurethral endoscopic removal. All patients were followed up for 6-36 months [(27.0±7.7)months]. The operation lasted for 20-72 minutes [(42.0±21.7)minutes]. The hospitalization time was 2-7 days [(4.0±1.7)days]. During the follow-up, 11 married males obtained normal sexual function after surgery [postoperative IIEF-5: (23.4±1.1)points vs. preoperative IIEF-5: (23.8±0.9)points]. Twenty-nine patients had normal urination [Qmax=(21.7±5.9)ml/s]. Two patients had narrow urinary tract (Qmax<15 ml/s), of whom one patient received regular urethral dilatation and another received resection and anastomosis of urethral stricture, both with satisfactory improvement of urination. Three patients had fever caused by urinary tract infection and recovered within 2 weeks after anti-infection treatment. There were no serious complications such as male sexual dysfunction, complex urethral stricture or septic shock. Conclusions Transurethral endoscopic surgery for foreign body-induced lower urinary tract injury has high success rate, minor impact on the sexual function of male patients and low incidence of complications, which is worthy of clinical practice. Key words: Urinary tract; Foreign body; Natural endoscopic surgery
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