Penile Length After Spinal Anesthesia vs General Anesthesia for Cystoscope in Adults

May 5, 2026 updated by: Hossam Eldeen Osama Darwesh, Tanta University

Penile Length After Spinal Anesthesia vs General Anesthesia for Cystoscope in Adults, Prospective Randomized Comparative Study

This research aimed to explore the impact of spinal and general anesthesia on penile length during surgery.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Penile length and erectile function are complex physiological processes influenced by an interplay of neural, vascular, and hormonal factors. The process of penile erection involves the relaxation of smooth muscles in the corpora cavernosa, leading to increased blood flow and penile engorgement.

Erectile dysfunction (ED), a prevalent condition in men, has been associated with numerous risk factors such as age, cardiovascular disease, diabetes, and spinal cord injury.

Study Type

Interventional

Enrollment (Actual)

200

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
    • El-Gharbia
      • Tanta, El-Gharbia, Egypt, 31527
        • Tanta University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adult male patients aged 21 years or older.
  • Patients scheduled for elective urological surgeries including transurethral resection of the prostate (TURP) or transurethral resection of bladder tumor (TURT).
  • Patients who provided written informed consent for participation in the study.

Exclusion Criteria:

  • Presence of a history of erectile dysfunction, penile deformities, or any urological conditions that could affect penile size.
  • Undergoing emergency surgeries or procedures that required alternative anesthetic techniques.
  • Known allergies or hypersensitivity to either spinal or general anesthesia.
  • Inability or unwillingness to provide informed consent.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Group A
Patients who underwent surgery under spinal anesthesia.
Procedure: Spinal anesthesia
Patients who underwent surgery under spinal anesthesia.
Experimental: Group B
Patients who underwent surgery under general anesthesia.
Procedure: General anesthesia
Patients who underwent surgery under general anesthesia.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Penile length
Time Frame: 20 minutes after anesthesia
Penile length was measured.
20 minutes after anesthesia

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Surgeon satisfaction
Time Frame: At the end of the procedure (Up to 2 hours)

The operating surgeon was asked to rate satisfaction with operative conditions related to penile size and accessibility using a structured 3-point ordinal scale:

  • Unsatisfied - Surgical exposure was insufficient; procedure was significantly hindered.
  • Hardly satisfied - Procedure was completed with difficulty due to altered penile length or engorgement.
  • Satisfied - No intraoperative difficulty attributable to penile size or exposure.
At the end of the procedure (Up to 2 hours)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Tanta University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 1, 2025

Primary Completion (Actual)

March 1, 2026

Study Completion (Actual)

March 1, 2026

Study Registration Dates

First Submitted

May 5, 2026

First Submitted That Met QC Criteria

May 5, 2026

First Posted (Actual)

May 12, 2026

Study Record Updates

Last Update Posted (Actual)

May 12, 2026

Last Update Submitted That Met QC Criteria

May 5, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 36264MS814/1/25

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

The data will be available upon a reasonable request from the corresponding author after the end of study for one year.

IPD Sharing Time Frame

After the end of study for one year.

IPD Sharing Access Criteria

The data will be available upon a reasonable request from the corresponding author.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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