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    Endourology has undergone fundamental changes over the last 2 decades. Maintaining low intrarenal pressure (IRP) during upper urinary tract procedures is an established concept. However, researchers have not yet studied the concept of reduced intravesical pressures (IVPs) during transurethral (TUR) surgery as thoroughly. Low IVP is supposed to decrease complications as fluid retention, TUR syndrome, and incidence of fever. The study aims to give an overview of the contemporarily existing concepts and specify the term of low IVP to avoid TUR-related complications and optimize TUR-related results. A literature search was performed using PubMed, restricted to original English-written articles, including animal, artificial model, and human studies. Different keywords were transurethral resection, transurethral enucleation, transurethral vaporization, pressure, fluid absorption, and TUR syndrome. Analyzed mean IVPs during TUR vary between 11 and 35 cmH2O but are mostly kept below 30 cmH2O. Mean maximum IVPs during TUR range from 20 to 55 cmH2O. Maximum IVPs seem to be lower when surgeons utilize continuous flow resection, and irrigation pressures are kept low. The results demonstrate a strong correlation between IVP levels and fluid absorption. IVP increase remains a neglected predictor of transurethral procedure complications, and endourologists should consider its intraoperative monitoring. Further research is necessary to quantify generated pressures and introduce means of controlling them.

    Citation

    Theodoros Tokas, Gernot Ortner, Thomas R W Herrmann, Udo Nagele, Training, Research in Urological Surgery and Technology (T.R.U.S.T.)-Group. Relevance of intravesical pressures during transurethral procedures. World journal of urology. 2021 Jun;39(6):1747-1756

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    PMID: 32772149

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