Beyond prone position in percutaneous nephrolithotomy: a comprehensive review

European Urology
Jean J M C H de la RosetteGlenn M Preminger

Abstract

Percutaneous nephrolithotomy (PNL) is traditionally performed with the patient in the prone position. To assess the efficacy and safety of the prone and supine positions, particularly in obese patients and in those with staghorn calculi. A Medline search was conducted for articles published during the last 10 yr related to PNL in the prone and supine positions. This search revealed 9 published studies for supine and 25 for prone PNL. None of the supine PNL studies reported visceral injuries, while transfusion rates were 0.0-9.4% and stone-free rates were 69.6-95.0%. One study of supine PNL evaluated a significant proportion of obese patients. Prone PNL studies in obese patients report transfusion rates of 3.2-8.8% and stone-free rates of 79.0-89.2%. In the only randomized study, excluding obese patients and staghorn calculi, operative time favors the supine position. A nonrandomized comparative study demonstrated similar complication rates with insignificant improvement in treatment success for supine PNL; however, when comparing series with similar proportions of staghorn calculi cases, there are slightly improved outcomes for prone PNL. Moreover, comparison of weighted means favors prone PNL. For obese patients and staghorn c...Continue Reading

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