[Percutaneous nephrolithotomy for kidney stones in elderly patients: Meta-analysis of results and complications].
OBJECTIVE
Percutaneous nephrolithotomy (PCNL) is the gold standard treatment for kidney stones regardless of age. Elderly patients (EP)≥65years old, in growing numbers, have more comorbidities than the general population, may alter results of PCNL. The aim of this meta-analysis was to compare efficacy and complications of this procedure between EP and young patients (YP).


METHODS
Original studies of prospective and historical cohorts, in English or French, presenting PCNL series published on PubMed until 2015 were identified using the keywords percutaneous nephrolithotomy, elderly patients, kidney stones and staghorn calculi. Our analysis focused on therapeutic efficacy, defined by absence of residual fragment or the presence of residual fragments<4mm at 3 postoperative months, and postoperative complications according to patient age: YP<65 years old and EP≥65 years old. Binary qualitative data were analyzed using odds ratio (OR) and quantitative data by estimating the difference of means.


RESULTS
In total 397 studies were identified among which 23 were checked and 8 included in the meta-analysis for methodological quality corresponding to 4995 YP and 820 EP. No efficacy difference (OR=0.96; [IC95 %: 0.80; 1.17]; P=0.71), operating time (+1.15min in EP [IC95 %: -2.83; 5.12]; P=0.57) and average length of stay (+0.29 days in EP [IC95 %: -0.14; 0.72]; P=0.19) has been reported. It was a trend to more urinary infections (OR=2.24; [IC95 %: 0.74-6.80]; P=0.16) and a significantly increase of postoperative blood transfusions in EP (OR=1.41; [IC95 %: 1.00-1.97]; P=0.04).


CONCLUSIONS
PCNL for kidney stones n EP is effective with a significantly increase the risk of postoperative blood transfusions compared to YP.
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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Haider
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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Regnier
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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FR
Roustan
Service de santé publique, GMRC, hôpitaux universitaires de Strasbourg, 67000 Strasbourg, France; Laboratoire ICube, université de Strasbourg, CNRS, 67400 Strasbourg, France.
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Séverac
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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PJ
Treacy
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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Mendel
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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Y
Bodokh
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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Tibi
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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R
Prader
Service d'urologie, hôpital Tenon, 4, rue de la Chine, 75970 Paris cedex 20, France.
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O
Traxer
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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D
Chevallier
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France.
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J
Amiel
Service d'urologie, d'andrologie et de transplantation rénale, université Nice Sophia-Antipolis, hôpital Pasteur 2, centre hospitalier universitaire de Nice, 30, Voie-Romaine, 06000 Nice, France; Inserm, U1189, ONCO-THAI, 59037 Lille, France. Electronic address: durand.m@chu-nice.fr.
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Durand
D000368:Aged; D006801:Humans; D007669:Kidney Calculi / Q000601:surgery*; D009403:Nephrostomy, Percutaneous
Calculs coralliformes; Calculs rénaux; Elderly patients; Kidney stones; NLPC; Patients âgés; Percutaneous nephrolithotomy; Staghorn calculi