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Intraoperative laser angiography in bladder exstrophy closure: A simple technique to monitor penile perfusion

Published:October 14, 2022DOI:https://doi.org/10.1016/j.jpurol.2022.10.012

      Summary

      Background

      The successful repair of Bladder Exstrophy remains one of the biggest challenges in Pediatric Urology. The primary focus has long been on the achievement of urinary continence. Historically there has been less focus on early penile outcomes. To this end we have incorporated penile perfusion testing using intraoperative laser angiography in to our operative approach.

      Objective

      We hypothesize that assessment of penile perfusion at various points in the procedure is a feasible technique that may assist in decision making during the repair of this complex condition. This will reduce the risk of tissue compression and potential loss of penile tissue that has been reported to occur as a complication of the procedure.

      Study design

      Consecutive patients presenting with bladder exstrophy were evaluated at four stages of their operation (i.e. following induction of anesthesia, after bladder mobilization, following internal rotation of the pubis and at the end of the procedure) by infusing indocyanine green (ICG) at a dose of 1 mg per 10 kg body weight. Measurements were taken at 80 s post infusion and the medial thigh served as the reference control. Postoperative penile viability was evaluated by visual inspection and palpation three months following the procedure.

      Results

      Eight consecutive patients were included in this study. Perfusion was easy to measure and posed no significant technical difficulties. Penile perfusion increased slightly following bladder dissection. Internal rotation of the hips with apposition of the symphysis pubis resulted in an average 50% reduction in penile blood flow. Patients undergoing CPRE experienced an additional mean 33% drop in blood flow. In all eight cases the penis was symmetric and healthy with no sign of tissue loss at three months follow up.

      Conclusions

      Image 1
      Graphical AbstractSummary table.

      Keywords

      Abbreviations:

      CPRE (Complete Primary Repair of Exstrophy), ICG (Indocyanine Green), MPRE (Modern Primary Repair of Exstrophy), PUMA (Pediatric Urology Midwest Alliance), RSTM (Radical Soft Tissue Mobilization), SRBE (Staged Repair of Bladder Exstrophy)
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