The effect of a surgically created shunt between the corpus cavernosum penis and corpus spongiosum penis of stallions on erectile and ejaculatory function.

The research explored the impacts of surgically creating a shunt between the corpus cavernosum penis and corpus spongiosum penis in stallions, with results indicating that the procedure doesn’t affect normal erectile and ejaculatory functions.

Research Purpose and Methodology

• The study aimed to assess the impact of surgically established shunt between the corpus cavernosum penis (CCP) and corpus spongiosum penis (CSP) on the erectile and ejaculatory functioning of healthy stallions and to verify whether the shunt persisted.
• The investigators evaluated the ability of the stallions to achieve an erection and to ejaculate before and after creating this corporeal (bodily) shunt.
• Persistence of the shunt was ascertained by injecting dye into the CCP at the time of necropsy (post-mortem examination).
• The researchers carried out this CCP-CSP shunt on five stallions and gathered their semen before and 4 to 14 weeks after the surgery.

Final Results

• All stallions exhibited normal erectile and ejaculatory function both, before and after the surgical operation. This result showed that creating a corporeal shunt didn’t interfere with the normal erectile and ejaculatory responses of the stallions.
• Injection of dye confirmed the shunt’s persistence in three of the five operated stallions, as the dye moved from the CCP into the CSP. In two stallions, the dye was only found in the CCP, suggesting closure of the shunt. The control stallion showed no trace of the dye in its CSP.

Conclusions and Implications

• The conclusion was that the creation of a corporeal shunt has no detrimental effect on stallions’ normal erectile and ejaculatory functioning. Therefore, keeping the shunt open isn’t necessary for preservation of these functions.
• If a stallion affected by priapism (prolonged and painful erection) failed to attain normal erection or ejaculate after the creation of a corporeal shunt, this is likely due to damage to the corporeal tissue rather than effects of the shunt. This finding can have significant implications for treating such conditions in stallions.