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Validation of a Vasoepididymostomy Predictor Model: Is Vasoepididymostomy Truly Predictable Pre-operatively?
Parviz K Kavoussi*
Texas A&M Health Sciences Center, Scott and White Memorial Hospital, Temple, TX

Introduction:
There is a vast range of training in microsurgical procedures for vasectomy reversals. A predictor model has been constructed to predict whether vasovasostomy (VV) or vasoepididymostomy (VE) will be necessary.
Methods:
115 consecutive patients who underwent vasectomy reversals were included. A previously published vasoepididymostomy predictor model was applied to all patients. Predicted outcomes were then analyzed with respect to outcomes with consideration to actual procedures performed. Maximum follow up was 30 months, with a median follow up of 16 months.
Results:
Out of the 115 patients reviewed, there were 40 patients who would have been predicted to require VE on one or both sides by the predictor model, but actually underwent vasovasostomy (VV) bilaterally. Follow up data was available in 62% of these patients, of which 88% were patent and 52% achieved pregnancies thus far.
There were a total of 70 patients who would have been predicted to only require VV’s by the predictor model, and underwent VV’s. Follow up data was available in 60% of these patients, of which 98% were patent and 36% achieved pregnancies thus far.
The 5 patients not accounted for included those who would have been predicted to require VV by the predictor model, and underwent VE, and who were predicted to require VE and underwent VE.
Conclusions:
The predictor model designed to identify which patients need VE versus those who will simply need VV is not a reliable predictor in patients seeking a more affordable fibrin glue vasectomy reversal in our patient population.

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