Purpose To study the effect of sildenafil, which is an effective agent for the treatment of erectile dysfunction, on ocular haemodynamics. Methods

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These results indicate that informed consent, including brief information about the risk factors and potential adverse reactions of IVCM, reduces anxiety level, while detailed information before the procedure increases the anxiety level.

The results support the findings of increased vascular resistance in OA XFG. High sensitivity and specificity obtained for OA RI may be useful in evaluation of future therapeutic vascular agents.

Henoch-Schönlein purpura, although being a systemic vasculitis, mostly involves skin, gastrointestinal system, joints, and kidneys. Testicular involvement is a rare occurrence. A 7-year-old boy with Henoch-Schönlein purpura developed acute scrotum and was referred to rule out testicular torsion. On gray-scale ultrasonography, the testes and epididymis were slightly enlarged, and had heterogeneous and hypoechoic echotexture. The scrotal wall was thickened as well. Color and power Doppler ultrasonography revealed increased vascularity in scrotal contents. Testicular torsion was excluded and the diagnosis of testicular involvement of Henoch-Schönlein purpura was established. Color Doppler US, together with gray-scale findings, can be useful in the evaluation of Henoch-Schönlein purpura with acute scrotum, excluding testicular torsion and preventing unnecessary surgery.