Delayed Ejaculation After Penile Prosthesis: Expected Course
Delayed ejaculation after AMS 700 inflatable penile prosthesis implantation is unlikely to improve spontaneously with time and may actually worsen over the long term.
Evidence-Based Trajectory
The available evidence indicates that ejaculatory function following penile prosthesis implantation follows a concerning pattern:
Ejaculatory function deteriorates with time post-implantation rather than improving. In a study of 121 patients with penile prostheses, ejaculatory function (measured by MSHQ-EjD scores) was significantly lower in patients more than 5 years post-surgery compared to those with shorter follow-up periods 1.
No significant improvement occurs regardless of treatment approach. The same study found no statistically significant difference in ejaculatory function improvement between surgical and non-surgical ED treatment groups, suggesting that prosthesis implantation does not inherently resolve pre-existing ejaculatory issues 1.
Clinical Context for Delayed Ejaculation
The 2022 AUA/SMSNA guidelines define delayed ejaculation as either lifelong or acquired inability to achieve ejaculation despite adequate stimulation and desire 2. This condition:
- Affects less than 5% of men clinically, though may be underreported 2
- Requires active management rather than expectant observation
- Does not spontaneously resolve when related to medications or other interventions 2
Management Approach
Do not adopt a "wait and see" strategy. Instead, implement active management:
Immediate Steps:
- Review and modify medications that may contribute to delayed ejaculation (SSRIs, antihypertensives, antipsychotics) through dose adjustment, replacement, or staged cessation 2
- Refer to mental health professional with sexual health expertise for psycho-behavioral interventions 2
- Counsel on behavioral modifications including changing sexual positions, practices, or incorporating enhancement devices to increase arousal 2
Pharmacotherapy Considerations:
Off-label options with limited evidence include 2:
- Oxytocin 24 IU intranasal during sex
- Pseudoephedrine 60-120 mg (120-150 minutes prior to sex)
- Ephedrine 15-60 mg (1 hour prior to sex)
Important Caveats:
The prosthesis itself may contribute to the problem. While one recent pilot study showed improvement in ejaculatory latency time after three-piece IPP placement in patients with both severe PE and ED 3, this represents a unique population where the prosthesis addressed both conditions simultaneously. For isolated delayed ejaculation developing after prosthesis placement, the mechanical and psychological changes from the device may perpetuate the dysfunction.
Partner involvement is critical. The AUA/SMSNA guidelines emphasize shared decision-making and partner involvement to optimize outcomes 2.
Age is a significant factor. Age-related increases in ejaculatory latency combine psychological and physiological processes that require active psychological and behavioral approaches rather than passive observation 2.