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Ejaculatory Behavior and Seminal Vesicle Size During Radical Prostatectomy

NCT07243795 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 40

Last updated 2025-12-03

No results posted yet for this study

Summary

The goal of this clinical trial is to learn if recent ejaculation or abstinence before surgery affects seminal vesicle size and dissection-related surgical factors in adult men with prostate cancer undergoing radical prostatectomy. The main questions it aims to answer are:

Does ejaculation within 36 hours before surgery reduce seminal vesicle size compared to abstinence of 72 hours or more?

Does seminal vesicle size affect the ease or difficulty of surgical dissection during radical prostatectomy?

Researchers will compare an ejaculation group to an abstinence group to see if seminal vesicle volume and intraoperative surgical parameters differ between them.

Participants will:

Follow specific instructions to either ejaculate or abstain before surgery

Undergo a transrectal ultrasound (TRUS) to measure seminal vesicle size after anesthesia but before surgery

Have their surgical dissection time and difficulty rated by the operating surgeon

Conditions

  • Prostate Cancer Patients Undergoing Radical Prostatectomy

Interventions

BEHAVIORAL

Recent Ejaculation

Participants are instructed to ejaculate at least once within 36 hours prior to radical prostatectomy. This behavioral intervention is used to evaluate its effect on seminal vesicle volume and intraoperative dissection parameters.

BEHAVIORAL

Preoperative Abstinence

Participants are instructed to abstain from ejaculation for at least 72 hours prior to radical prostatectomy. This behavioral intervention is used to assess whether prolonged seminal vesicle filling affects intraoperative anatomy and dissection.

Sponsors & Collaborators

  • National Taiwan University Hospital

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
HEALTH_SERVICES_RESEARCH
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-12-01
Primary Completion
2026-08-01
Completion
2026-10-09

Countries

  • Taiwan

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07243795 on ClinicalTrials.gov