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The correlation among cavernous pressure, penile rigidity and resistance index
1Department of Urology, City Hospital De Bijloke, Ghent, Belgium.
Purpose:
We define the precise meaning and diagnostic significance of the resistance index generated by duplex scanning.
Materials And Methods:
In 80 patients penile rigidity was clinically evaluated and a penile duplex scan was performed after intracavernous injection of 10 microg. prostaglandin E1. The intracavernous equilibrium pressure was measured in 34 of these patients.
Results:
We found a statistically highly significant linear relationship among cavernous pressure, resistance index and penile rigidity (p <0.001).
Conclusions:
The resistance index and clinical degree of penile rigidity are 2 expressions of intracavernous pressure. Clinical observation of erection is equivalent to the resistance index in screening for cavernous leakage.