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Rechallenge prior sildenafil nonresponders.
1Department of Surgery, Division of Urology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan. bpjiaan@isca.vghks.gov.tw
International Journal of Impotence Research
|February 14, 2004
Summary
Many patients experience sildenafil failure due to incorrect usage. Rechallenging with proper education significantly improves erectile dysfunction (ED) treatment success rates, highlighting the importance of patient guidance.
Area of Science:
- Urology
- Pharmacology
- Sexual Medicine
Background:
- Sildenafil is a common treatment for erectile dysfunction (ED).
- A significant number of patients report suboptimal response or failure to sildenafil.
- Inappropriate usage patterns may contribute to perceived sildenafil failure.
Purpose of the Study:
- To investigate inappropriate sildenafil use as a cause of treatment failure in erectile dysfunction (ED) patients.
- To assess the feasibility and success rate of rechallenging nonresponding patients with sildenafil.
- To determine if individualized patient education can improve sildenafil efficacy.
Main Methods:
- Sixty consecutive ED patients reporting poor sildenafil response were enrolled.
- Baseline ED status was assessed using the International Index of Erectile Function-5 (IIEF-5).
- A Sildenafil Use Questionnaire (SUQ-9) evaluated patient usage patterns.
- Forty-four patients underwent rechallenge with sildenafil (100 mg) after receiving individualized instructions based on SUQ-9.
- Efficacy was evaluated using IIEF-5 and Global Assessment Question (GAQ) after 4 weeks.
Main Results:
- Of 60 patients, 44 (77.3%) exhibited major suboptimal sildenafil use (e.g., insufficient dose, infrequent attempts, unawareness of need for sexual stimulation).
- Among 44 rechallenged patients, 34 completed follow-up (93.2% follow-up rate).
- The response rate to rechallenge was 58.5% (24/41), with a mean IIEF-5 score improvement of 8.4±5.5 in responders (P <0.05).
Conclusions:
- Suboptimal sildenafil use is common among patients reporting treatment failure.
- Individualized patient education and scheduled follow-up significantly increase the success rate of sildenafil rechallenge.
- Improving patient education and physician awareness can enhance sildenafil efficacy for erectile dysfunction.