Brian R Matlaga

..We evaluated the cost-effectiveness of ureteral/renal stone treatment by comparing ureteroscopy, extracorporeal shock wave lithotripsy and percutaneous nephrolithotomy...

..We compared the clinical outcomes of patients with ureteral or renal stones treated with ureteroscopy, shock wave lithotripsy using HM3 (Dornier®) and nonHM3 lithotripters, and percutaneous nephrolithotomy...

..We tested the ability of dual source CT imaging to distinguish calcium oxalate (CaOx) stones from calcium phosphate (CaP) stones, and both types of calciferous stones from uric acid (UA) stones...

..Taken all together, these findings suggest that urolithiasis in the young child is a complex systemic disease process...

..We performed a study of the surgical practice logs submitted to the American Board of Urology by candidates for initial certification and recertification to characterize the manner in which renal and ureteral calculi are treated...

..We evaluated the likelihood of being diagnosed with or treated for an upper urinary tract calculus following Roux-en-Y gastric bypass surgery...

..In fact, previous investigations of this subject have yielded conflicting findings. UTI is increasingly being recognized as a preventable complication, and UTI rates are used to measure quality of surgical care...

..Although laparoscopic approaches are currently being evaluated, most patients currently undergoing this reconstructive procedure still require open operative intervention...

..Therefore, we performed a study to examine urinary risk factors of patients who underwent restrictive gastric surgery for bariatric indications...

..In adults, kidney stone disease has been associated with medical comorbidities such as HTN, DM, and obesity. Similar analyses have never been performed for the pediatric population...

..However, the effect of increasing degrees of obesity on stone formation has yet to be defined. To address this question we examined how an increasing body mass index affects the risk of kidney stone disease...

..Certain malabsorptive bariatric procedures have been associated with an increased risk for kidney stone formation. However, the kidney stone risk of gastric banding, a restrictive bariatric procedure, is unknown...

..Although the reason for this unusual preponderance of calcium phosphate calculi is unclear, physiologic alterations that occur during pregnancy may be influential...

..The aim of this in vitro study was to examine the capability of three protocols of dual-energy CT imaging in distinguishing calcium oxalate, calcium phosphate, and uric acid kidney stones...

..To determine, by systematic review and meta-analysis of all randomized controlled trials examining ureteral stent placement after ureteroscopy, whether the presence or absence of a stent was associated with postoperative complications...

..We performed a literature review and analysis to compare the safety of ureteroscopic stone removal during pregnancy with findings from a set of contemporary studies of that procedure in nonpregnant patients...

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..To define the sex prevalence of inpatient hospital discharges for pediatric patients diagnosed with upper urinary tract stone disease...

..We sought to characterize practice patterns in the emergency treatment of stone disease, and to identify potential disparities in care based on non-medical factors...

..To describe a novel method for fragment evacuation after percutaneous lithotripsy of neobladder calculi...

..The diagnosis of an upper tract calculus in the pregnant woman can be challenging. Recent evidence suggests that MRU can be used to effectively evaluate renal colic...

..The management of a splenic injury after PNL is not well defined; therefore, we performed a study to define a management strategy for such an event...

..We performed a systematic review and meta-analysis to define the effect of shock wave rate on the outcome of shock wave lithotripsy...

..Administrative databases are increasingly used for epidemiological investigations. We performed a study to assess the validity of ICD-9 codes for upper urinary tract stone disease in an administrative database...

..Thus, we performed a study in partnership with the Federal Aviation Administration to better characterize the epidemiology of this condition...

..The occurrence of a stone event in a pregnant woman is a complex situation. Therefore, a clear understanding of the management options available and their relative advantages and disadvantages for this unique population is important...

..Stone activity does not appear to increase, and metabolic sequelae are uncommon in properly selected patients...

..The fragment was deemed clinically insignificant, and the patient remained asymptomatic without any further follow-up...

..An explanation is the learning curve associated with laparoscopic partial nephrectomy. We analyzed state trends in renal surgery and their relationship to the introduction of robotic technology...

..The objective of our study was to compare the safety and efficacy of an inexpensive, surgeon-prepared hemostatic agent with that of a more expensive, commercially prepared one...

..We performed a study to define the effect of having the urology nursing staff process and sterilize all ureteroscopes, rather than the central processing core; the total repair cost and cost per use were analyzed...

..CONCLUSION: CT guided percutaneous access is infrequently required for PNL. However, there is a select group of patients with anatomical anomalies that may predictably require this procedure to facilitate safe and efficacious PNL...

..One benefit of this imaging modality is the detection of procedure-related complications. Presently, the incidence of such complications is not well-defined...

..Herein, we review the implementation of a didactic and practical curriculum to introduce the Holmium:YAG laser for flexible URS. Following the initial tutorial period, we assessed procedure outcomes and complications...

..We characterized the use of conventional radiography (x-ray), ultrasound and computerized tomography in the emergency department evaluation of patients with acute flank pain...

..It is now recognized that there are certain maneuvers with SWL that the treating physician can do that will increase the likelihood of a successful outcome while minimizing the likelihood of adverse treatment-related events...

..There are a number of patient- and device-specific factors that can affect treatment outcome. Herein, we review practices that can increase the likelihood of SWL treatment success...

..Although there is much optimism with regard to this technology, further study is required to better define the oncologic efficacy and refine proper patient selection...

..We complete our discussion with a review of the medical management of stone formers providing both general recommendations as well as reviewing focused therapies for specific metabolic abnormalities and medical conditions...

..With such an approach, complication rates are low and success rates are high. A multidisciplinary approach should be emphasized as a key to a successful outcome...

..Herein, we review the evolution of the technology and advances in the instrumentation over the last three decades...

..Technologic advances and improved surgical skills have greatly reduced the number of patients requiring open surgery. This approach is mainly used for patients with complex calculous disease associated with anatomic abnormalities...

..Stone disease may also be induced by drugs that are used to treat a number of disease processes. When this occurs, the drug will usually need to be discontinued and alternative therapy should be instituted...

..Our data indicate that it can completely destroy renal cancers while transmitting minimal collateral damage to surrounding renal parenchyma. Further investigation is required to determine long-term oncological outcome...