Penile Doppler Ultrasound is a procedure that is used to predict the response of your erectile dysfunction to vasodilator medications. It allows the urologist to determine and document if you have an inflow or outflow type of erectile dysfunction. Erectile dysfunction has many etiologies. Some respond well to vasodilator drugs and some disease such as arteriosclerosis, high blood pressure and diabetes exert their effects on blood vessels throughout the body, including the penis.
If your disease causes an inflow erectile dysfunction, overtime or when you present to our office, the vasodilator drugs may not be able to dilate the arteries feeding the erectile bodies.
If you have a severe outflow erectile dysfunction then any therapy that causes an increased inflow during erection may not be adequate for maintaining erections hard enough and/or long enough for satisfactory intercourse. Depending on the severity, these outflow problems may only be treated adequately with penile prosthetics.
The ultrasound study proceeds as follows:
You will be lying on your back on the examining table. A penile injection will be performed to provide the penis with a medicine that causes increased inflow by vasodilating the penile arteries. Once this is accomplished at timely intervals (5 and 15 minutes), an ultrasound of the cavernosal arteries of both sides of the penis will be performed. To do the penile Doppler study, a probe is lubricated and placed on the penis. There is no pain involved. You may experience a very short, mild discomfort initially during the penile injection.
Please tell the doctor if you are allergic to alprostadil or any other drugs
Please inform the doctor of any prescription or nonprescription medications you are currently taking.
Please inform us if you have ever had anemia, bleeding disorders, sickle cell disease, leukemia, cancer, kidney or liver disease.
If you have a penile implant, alprostadil should not be used.
Side effects are not common but may include:
- Erection lasting more than 4 hours
- Redness, swelling, tenderness or unusual curving of the erect penis
- Nodules or hard areas on the penis
- Pain on injection