A 53 year-old Japanese man was referred to our hospital for persistent priapism, which had been induced by 200 mg (usual dose 25-50 mg) of sildenafil citrate (Viagra) three days earlier. He had a history of erectile dysfunction and had undergone penile injection therapy elsewhere; however, he had not used injection therapy this time. He obtained sildenafil personally without a doctor's prescrip...

For years, phosphodiesterase type 5 inhibitors have been used for the treatment of erectile dysfunctions. Due to the similarities between male and female sexual response, several studies have assessed the effects of sildenafil citrate (Viagra(®)) in women affected by female sexual arousal disorder. The results are still conflicting and the drug is not devoid of adverse effects. Furthermore, fem...

Recent experimental and clinical studies have demonstrated the negative effects of nicotine on the viability of skin flaps. Necrotic damage to skin flaps can result in significant complications including delayed wound healing, dehiscence and wound contraction. Phosphodiesterase type 5 inhibitors, such as sildenafil citrate, have a protective effect in ischemic injuries of the brain, kidney, myo...

BACKGROUND Erectile dysfunction (ED) is common in men with renal failure, but is not always alleviated following kidney transplant. The objective of the present study was to assess the feasibility in renal transplant patients of sildenafil citrate treatment, an agent with proven efficacy in the management of ED. METHODS This was a phase IV, open, multicentre, 3 month, dose-escalation study. A...

OBJECTIVE To survey patient satisfaction, using validated questionnaires, in a group of men with erectile dysfunction who had used and responded to both sildenafil citrate and intracavernosal injection (ICI) therapy. PATIENTS AND METHODS In all, 300 patients on ICI therapy were mailed questionnaire packets containing a survey enquiring about the patients' medical history, and two sets of the ...

Sildenafil citrate (SC), a drug for erectile dysfunction, is now emerging as a cardiopulmonary drug. Our study aimed to determine a novel role of sildenafil on cardioprotection through stimulating angiogenesis during ischaemia (I) reperfusion (R) at both capillary and arteriolar levels and to examine the role of vascular endothelial growth factor (VEGF) and angiopoietin-1 (Ang-1) in this mechan...

AIMS We sought to assess the effects of sildenafil on exercise capacity and haemodynamic response to exercise in Fontan patients. METHODS AND RESULTS We prospectively studied 27 patients with Fontan circulation (age 22.8 +/- 4.9 years). All patients underwent a baseline exercise test with non-invasive measurement of cardiac index (CI) and pulmonary blood flow (PBF) index, and peak exercise ox...

Seven patients, aged between 50 and 69 years, had typical features of nonarteritic anterior ischemic optic neuropathy (NAION) within 36 hours after ingestion of sildenafil citrate (Viagra) for erectile dysfunction. Six patients had vision loss within 24 hours after use of the agent. Final visual acuity in the affected eye ranged from 20/20 to light perception. Both eyes were affected in one ind...