Extracorporeal shock wave lithotripsy (ESWL) versus percutaneous nephrolithotomy (PCNL) or retrograde intrarenal surgery (RIRS) for kidney stones. 2009

Attasit Srisubat, and Somkiat Potisat, and Bannakij Lojanapiwat, and Vasun Setthawong, and Malinee Laopaiboon
Institute of Medical Research and Technology Assessment, Dept of Medical Services, Ministry of Public Health, Tiwanon, Nonthaburi, Thailand, 11000.

BACKGROUND Stones in the urinary tract are a common medical problem in the general population. At present, the great expansion in minimally invasive techniques has led to the decrease in open surgery. Extracorporeal shock wave lithotripsy (ESWL) has been introduced as an alternative approach which disintegrates stones in the kidney and upper urinary tract through the use of shock waves. Nevertheless, as there are limitations with the success rate in ESWL, other minimally invasive modalities for kidney stones such as percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) are also widely applied. OBJECTIVE To evaluate the effectiveness and complications of ESWL compared with PCNL or RIRS for managing kidney stones. METHODS We searched the Cochrane Central Register of Controlled Trials (CENTRAL in The Cochrane Library), MEDLINE, EMBASE and reference lists of articles without language restriction. METHODS Randomised controlled trials (RCTs) assessing the use of ESWL compared to PCNL or RIRS for kidney stone management. METHODS Two authors independently assessed all the studies for inclusion. Statistical analyses were performed using the random effects model and the results expressed as risk ratio (RR) for dichotomous outcomes or mean difference (MD) for continuous data with 95% confidence intervals (CI). RESULTS Three studies (214 patients) were included, however results could not be pooled. Two RCTs compared ESWL to PCNL. The success rate at three months for lower pole kidney stones was statistically higher for PCNL (RR 0.39, 95% CI 0.27 to 0.56). Re-treatment (RR 1.81, 95% CI 0.66 to 4.99) and using auxiliary procedures (RR 9.06, 95% CI 1.20 to 68.64) after PCNL were less compared to ESWL. The efficiency quotient (EQ) in PCNL was higher than ESWL. Hospital stay (MD -3.30 days, 95% CI -5.45 to -1.15), duration of treatment (MD -36.00 minutes, 95% CI -54.10 to -17.90) and complications were less for ESWL. One RCT compared ESWL versus RIRS for lower pole kidney stones. The success rate was not significantly different at the end of the third month (RR 0.91, 95% CI 0.64 to 1.30). CONCLUSIONS Results from three small studies, with low methodological quality, indicated ESWL is less effective for lower pole kidney stones than PCNL but not significantly different from RIRS. Hospital stay and duration of treatment was less with ESWL. More RCTs are required to investigate the effectiveness and complications of ESWL for kidney stones compared to PCNL or RIRS.

UI MeSH Term Description Entries
D007669 Kidney Calculi Stones in the KIDNEY, usually formed in the urine-collecting area of the kidney (KIDNEY PELVIS). Their sizes vary and most contains CALCIUM OXALATE. Kidney Stones,Renal Calculi,Nephrolith,Renal Calculus,Calculi, Kidney,Calculi, Renal,Calculus, Kidney,Calculus, Renal,Kidney Calculus,Kidney Stone,Stone, Kidney,Stones, Kidney
D008096 Lithotripsy The destruction of a calculus of the kidney, ureter, bladder, or gallbladder by physical forces, including crushing with a lithotriptor through a catheter. Focused percutaneous ultrasound and focused hydraulic shock waves may be used without surgery. Lithotripsy does not include the dissolving of stones by acids or litholysis. Lithotripsy by laser is LITHOTRIPSY, LASER. ESWL (Extracorporeal Shockwave Lithotripsy),Electrohydraulic Shockwave Lithotripsy,Extracorporeal Shockwave Lithotripsy,Litholapaxy,Noninvasive Litholapaxy,Percutaneous Ultrasonic Lithotripsy,Ultrasonic Lithotripsy,ESWLs (Extracorporeal Shockwave Lithotripsy),Electrohydraulic Shockwave Lithotripsies,Extracorporeal Shockwave Lithotripsies,Litholapaxies,Litholapaxies, Noninvasive,Litholapaxy, Noninvasive,Lithotripsies,Lithotripsies, Electrohydraulic Shockwave,Lithotripsies, Extracorporeal Shockwave,Lithotripsies, Percutaneous Ultrasonic,Lithotripsies, Ultrasonic,Lithotripsy, Electrohydraulic Shockwave,Lithotripsy, Extracorporeal Shockwave,Lithotripsy, Percutaneous Ultrasonic,Lithotripsy, Ultrasonic,Noninvasive Litholapaxies,Percutaneous Ultrasonic Lithotripsies,Shockwave Lithotripsies, Electrohydraulic,Shockwave Lithotripsies, Extracorporeal,Shockwave Lithotripsy, Electrohydraulic,Shockwave Lithotripsy, Extracorporeal,Ultrasonic Lithotripsies,Ultrasonic Lithotripsies, Percutaneous,Ultrasonic Lithotripsy, Percutaneous
D009403 Nephrostomy, Percutaneous The insertion of a catheter through the skin and body wall into the kidney pelvis, mainly to provide urine drainage where the ureter is not functional. It is used also to remove or dissolve renal calculi and to diagnose ureteral obstruction. Percutaneous Nephrostomy,Nephrostomies, Percutaneous,Percutaneous Nephrostomies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D016032 Randomized Controlled Trials as Topic Works about clinical trials that involve at least one test treatment and one control treatment, concurrent enrollment and follow-up of the test- and control-treated groups, and in which the treatments to be administered are selected by a random process, such as the use of a random-numbers table. Clinical Trials, Randomized,Controlled Clinical Trials, Randomized,Trials, Randomized Clinical
D018666 Ureteroscopy Endoscopic examination, therapy or surgery of the ureter. Surgical Procedures, Ureteroscopic,Ureteroscopic Surgical Procedures,Surgery, Ureteroscopic,Ureteroscopic Surgery,Procedure, Ureteroscopic Surgical,Procedures, Ureteroscopic Surgical,Surgeries, Ureteroscopic,Surgical Procedure, Ureteroscopic,Ureteroscopic Surgeries,Ureteroscopic Surgical Procedure,Ureteroscopies

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