Tissue response to applied loading using different designs of penile compression clamps

Area of Science:

• Urology
• Biomedical Engineering
• Dermatology

Background:

• Penile compression devices (PCDs) manage urinary incontinence (UI) post-prostatectomy.
• PCDs offer secure UI management but pose risks like pressure ulcers and impaired blood flow.
• Objective assessment of tissue health and safe PCD use guidelines are lacking.

Purpose of the Study:

• To evaluate physiological responses to existing PCDs.
• To assess the potential for pressure-induced injury from PCDs.
• To compare different PCD designs and inform safe usage recommendations.

Main Methods:

• Six men with post-prostatectomy UI participated in a controlled laboratory study.
• Four selected PCDs were tested in random order at effective pressures.
• Objective measures of skin injury, circulatory impedance, interface pressures, and inflammatory response (IL-1α) were recorded.

Main Results:

• PCD use demonstrated evidence of circulatory impedance under most test conditions.
• Interface pressures varied significantly between devices and participants (mean 137.4±69.7 mmHg).
• Elevated IL-1α levels indicated an inflammatory response after 10 minutes, returning to baseline 40 minutes post-removal.

Conclusions:

• All tested PCDs caused temporary tissue and blood flow compromise during 50-minute wear.
• While pro-inflammatory cytokines elevated, PCDs did not induce sustained irritation; skin health recovered post-removal.
• Applying a clamp for 1 hour with 1 hour free appears safe, but longer durations require further investigation.