Urology journal
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To discuss the methodological considerations of a standard and applicable randomized clinical trial (RCT). ⋯ Randomized clinical trials' report should be absolutely clear, simple, and easy to understand with well-defined internal and external validity. Efforts should be made to design high quality RCTs in urology. There are substantial needs for urologists to their knowledge about RCT.
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To study the simultaneous effects of prone position and anesthesia on intraocular pressure (IOP) and the time impact on post anesthesia visual loss development in percutaneous nephrolithotomy (PCNL). ⋯ Intraocular pressure dropped significantly after anesthesia and increased in prone position. There was a linear relationship between IOP rise and the prone position duration, doubled within two hours. Therefore, in PCNL carried out in prone position, it is recommended to observe safety measures and necessary precautions for IOP rise and possible post anesthesia visual loss, particularly in glaucoma.