(202) Comparative Study of the Efficacy of Avanafil and Atorvastatin Daily Dose in Management of Vasculogenic Erectile Dysfunction

Abstract

Abstract Introduction Erectile dysfunction (ED) is defined as the “consistent inability to attain or maintain a penile erection, or both, sufficient for adequate sexual relations”. ED is not only a medical problem but affects the marital relations and patient's self-esteem and causes the quality of life to decrease. which in turn causes the patient to go into depression or develop anxiety. In the past, erectile dysfunction was considered, in most cases, to be a purely psychogenic disorder, but current evidence suggests that more than 80% of cases have an organic aetiology. Causes of organic erectile dysfunction can now be broadly divided into nonendocrine and endocrine. Of the nonendocrine aetiologies, vasculogenic (affecting blood supply) is the most common and can involve arterial inflow disorders and abnormalities of venous outflow (corporeal veno-occlusion). Avanafil is a second-generation phosphodiesterase type 5 inhibitor approved for erectile dysfunction by the FDA on 2012 and by EMA in 2013. With a high selectivity for phosphodiesterase type 5 isoform AND faster onset of action compared with other PDE5 inhibitors, it offers more tolerability and less adverse events. Atorvastatin is 3-hydroxy-methylglutaryl (HMG)-CoA reductase inhibitor act on the rate-limiting step in cholesterol biosynthesis (the conversion of HMG-CoA to mevalonate) and are effective in treating dyslipidemia. statins reverse endothelial dysfunction by decreasing the action of oxidized low-density lipoprotein (LDL) on endothelial cells, resulting in an increase of NO activity. Objective is to evaluate and compare the efficacy of avanafil and atorvastatin daily dose in management of patients with vasculogenic erectile dysfunction. Methods A 60 adult heterosexual males complaining of vasculogenic erectile dysfunction proven by penile duplex were collected from outpatient andrology clinics of Al-Azhar University Hospitals. The patients were divided into two treatment groups: (Group A): 30 patients received daily dose of 100 mg avanafil. (Group B): 30 patients received daily dose of 40 mg atorvastatin, The main outcome measures and the difference in penile duplex ultrasound results and IIEF-EF scores between the two groups are evaluated and compared at the end of the study, Age of patients between 20 and 50 years, established diagnoses of Vasculogenic erectile dysfunction, Normal lipid profile, Normal Total and Free testosterone levels and No contraindications to the study medications were included criteria. However patients who failed to fulfill any of the inclusion criteria, psychogenic or neurogenic erectile dysfunction, dyslipidemia Patients with Renal or Hepatic insufficiency and Patients with advanced cardiovascular diseases such as heart failure and coronary artery disease on antianginal drugs especially nitrates were excluded. Results Our study revealed statistically significant improvement in Penile Doppler ultrasonography parameters (PSV, EDV& RI) and IIEF-EF scores in avanafil group compared to atorvastatin group. Conclusions avanafil 100 mg daily dose leads to significant improvement in men with vasculogenic erectile, while atorvastatin 40 mg caused no significant differences, neither positively nor adversely. In summary, avanafil at dose of 100 mg can be a therapeutic appropriate choice in cases of vasculogenic ED. Disclosure No.