JOURNAL ARTICLE

Which anatomic structures should be preserved during Aquablation contour planning to optimize ejaculatory function? A case-control study using ultrasound video recordings to identify surgical predictors of postoperative anejaculation

David-Dan Nguyen, Surag S Mantri, Kevin C Zorn, Vincent Misraï, Dean Elterman, Naeem Bhojani
Urology 2021 January 19
33482130

OBJECTIVE: To identify key anatomic structures that should be preserved to further avoid postoperative anejaculation after Aquablation.

METHODS: We conducted a case-control study design using patient data and operative video logs from Aquablation clinical trials. Cases were sexually active participants with functional baseline ejaculation and postoperative anejaculation. Controls were sexually active participants with functional baseline ejaculation and no postoperative decline in sexual function. Each case was matched to 1 or 2 controls. Video logs from the procedure were scored for: verumontanum cut coverage, penetration of ejaculatory ducts, depth of cut below the verumontanum, angle offset of verumontanum to centerline of protection zone, number of passes, and intraprostatic calcifications. Conditional logistic regression was used to calculate univariate odds ratios relating anatomic findings to case/control status.

RESULTS: We identified 24 cases and 27 controls. In univariate analysis, predictors of postoperative anejaculation were: penetration of the ejaculatory ducts (odds ratio [OR] 8.6 [95% CI 1.09-67.5], p=0.041) and depth below the verumontanum (OR 1.92 [1.1-3.3], p=0.015).

CONCLUSIONS: Violation of anatomic structures involved in ejaculation during the Aquablation procedure increases the risk of postoperative anejaculation. More careful attention to these structures during contour planning may further improve ejaculatory function after Aquablation.

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