Ahmed I Refaat

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PURPOSE Dexamethasone has analgesic, anti-inflammatory, and antiemetic effects. This prospective, randomized, double-blind, controlled study was designed to evaluate the efficacy of adding dexamethasone versus fentanyl to epidural bupivacaine on postoperative analgesia. METHODS Ninety patients ASA I-II scheduled for lower abdominal surgeries were randomly(More)
Improvement of the dissolution behavior of poorly water soluble tadalafil using solid dispersion technique was investigated. Polyvinylpyrollidone (PVP) was used to prepare solid dispersions (SDs) based on different ratios; 1:1 (SD1,), 1:2 (SD2,), 1:3 (SD3), 1:4 (SD4,) respectively. Tadalafil/PVP/Avicel® in a ratio of 1:2:2 respectively (SD5) was also(More)
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