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12 Cards in this Set
- Front
- Back
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What is the indication for penile duplex Imaging and assessment? |
To determine whether impotence is a result of vascular insufficiency |
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What are the limitations to penile duplex Imaging and/or assessment? |
Sensitivity to medication or anticoagulation May prevent the use of vasodilator medication that is used to elicit erections |
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What are important vessels in penile assessment?*** |
Superficial and deep dorsal vein Dorsal arteries Cavernosal arteries |
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Where are the cavernosal arteries located? |
There are two, a single artery is located in each corpus cavernosum |
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An appropriately size cuff is placed on the shaft of the penis and what is obtained from that? |
Plethysmographic Waveforms Penile pressures, using Doppler or PPG |
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What should be obtained prior to penile evaluation? |
A limited lower extremity evaluation just to determine that there is a presence of peripheral arterial disease |
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What is the penile brachial index?**$$$@ |
>_0.75 Normal 0.65-0.74 Marginal <0.65 Abnormal |
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Describe penile duplex Imaging evaluation. |
Perform with linear array transducer, Penis is injected at the lateral proximal shaft of the penis. Measurements obtained before and after injection Cavernosal artery ap diameter and special waveform calculating PSV and EDV Dorsal vein flow velocity |
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Interpretation of penile duplex Imaging***$$$@ |
Pre and post injection waveforms are compared. Cavernosal artery diameter should increase post injection Flow resistance should decrease post injection, suggesting a higher metabolic demand PSV should increase >30 cm/second
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What is an abnormal arterial waveform post injection?*** |
An increase of <30cm/sec is considered abnormal |
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How is the dorsal vein evaluated?***$$$ |
The dorsal vein velocity should not increase post injection. An increase is suggestive of venous leak. Normal <3cm/sec Abnormal >20cm/sec |
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Define Priapism?***$$ |
Prolonged erection of the penis. If your action last for more than 4 hours the patient should seek immediate medical attention |
