Can Viagra Intake Increase The Injury On Penis During Intercourse?

Hi, my boyfriend and i had very vigorous sex last night, with constant thrusting to my pelvis. Later he became very swollen at the shaft of his penis, the tip remained normal color but the base and the scrotum became dark purple and black. he has not pain other than discomfort from the swelling, he visited the ER and they basically told him he had a bruised penis with blood vessels that burst. later i found out that he did take Viagra, would this have increased the chance of this happening?