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16 active trials for Hypospadias

Reconstructing Forked Corpus Spongiosum in Hypospadias Repair

Hypospadias is one of the most common genital malformations in children. The high incidence of hypospadias, which occurs in 1 in 200 to 300 live births, means that it affects a large number of patients. Surgery is the only way to repair hypospadias. Over 400 techniques have been described for hypospadias repair. However, the surgical success rate of hypospadias is still not ideal. Although the surgical success rate of distal hypospadias has reached more than 85%, the complications of proximal hypospadias are still as high as 30-68%. How to improve surgical skills and reduce the postoperative complications is quite a challenge for pediatric urologists. In the preliminary clinical work, the investigators have tried to apply the technique of reconstructing forked corpus spongiosum (FCS) in hypospadias repair with urethral plate preservation. It has been confirmed that this technique was effective in reducing postoperative complications of this type of hypospadias repair. In order to promote the technology of reconstructing FCS, the investigators need to perform this technology in various types of hypospadias and evaluate its true effectiveness. Therefore, the investigators need to design a prospective, randomized, parallel-controlled, single-blind, and superior clinical trial to analyze the efficacy of reconstructing FCS in hypospadias repair. In this study, the investigators will perform one-stage surgical repair on children with primary hypospadias by the same surgeon in Urology Department, Children's Hospital of Fudan University, Shanghai, China. Participants will be random grouped: Routine standardized surgery with reconstructing FCS group and Routine standardized surgery group. All participants will be closely followed up and regularly evaluated after surgery, including postoperative complications, HOSE objective score of cosmetic outcome and voiding function. By collecting all data and conducting statistical analysis, the investigators will evaluate the followings: (1) the correlation between the penile curvature and the development of FCS; (2) the effect of reconstructing FCS on the complications of primary hypospadias repair; (3) the effect of reconstructing FCS on the cosmetic outcome; (4) the influence of reconstructing FCS on postoperative voiding function. Based on this clinical randomized controlled study, the investigators intend to prove the feasibility and effectiveness of the new technology of reconstructing FCS in various types of hypospadias repair. The study will provide a reliable basis for the promotion of this technology for hypospadias repair in order to improve the quality of life for children with hypospadias.

Start: October 2021
Out Of-plane Technique Against In-plane for Caudal Block

Caudal block is an easy and effective type of central neuraxial block that is widely used in subumbilical surgeries to provide intraoperative and postoperative analgesia in the pediatric population. Caudal block application with ultrasound (USG) was first applied in 2003. Sacrum, sacral cornular, sacrococcygeal ligament and sacral hiatus can be easily distinguished by ultrasound. The probe is positioned in a horizontal midline position on the lower sacrum. Sacral roots within the caudal epidural space can be seen as hypoechoic ellipses. In addition, anatomical variations of the sacral hiatus and the process area can be clearly observed. A accurate probe use with ultrasound guided is confirmed by advancing the caudal needle in the desired direction, widening in the sacral hiatus with local anesthetic injection, and the turbulence observed during injection into the sacral canal if the color doppler feature is used. Thus, a decrease in complications and an increase in the success of the procedure can be achieved with simultaneous imaging. In addition, in cases where the block is difficult, the in-plane technique can be preferred in the midline plane.The aim of this study is to compare the success rates and postoperative pain levels of caudal block applications with the out of plane technique (probe applied by holding horizontal) and in-plane technique (probe applied vertically), which is routinely applied with ultrasound in pediatric hypospadias surgery.

Start: December 2020
Selective Criteria and a Modified Technique of Applying "URAGPI" Technique for More Proximal Degree of Hypospadias

Hypospadias is a condition in which the location of the urethral meatus is on the ventral aspect of the penis. Hypospadias is the most common congenital anomaly of urogenital organs in boys, with an incidence of approximately 1 in 250 newborns. Recently, case selection has been advised to avoid possible complications and limitations [1]. The meatal advancement and glanuloplasty (MAGPI) procedure was first described in 1981 for the repair of distal hypospadias. An excellent surgical result requires careful case selection, avoiding cases with thin or rigid ventral para-meatal skin or a meatus too proximal or too wide. The glans wrap to support the advanced ventral urethral wall requires a solid tissue approximation in two layers to prevent regression of the meatus. Meatal stenosis can be avoided by assuring an adequate dorsal Heineke- Mikulicz tissue rearrangement and making an incision from within the urethral meatus well distally into the urethral groove. . The overall success rate with the MAGPI procedure suggests that it should continue to be used in the repair of distal hypospadias [2]. The advantage of Urethral advancement, Glanuloplasty, and Preputioplasty " URAGPI" versus MAGPI Is that A) Applicability to almost any type of distal hypospadias regardless of the severity of glanular ventriflexion. B) Normal appearance of the penis. C) Good functional results.

Start: April 2020