Percutaneous nephrolithotomy with ultrasonography-guided renal access in the modified lateral position with extended legs. 2022

N Ngoc Thai, and D Anh Toan, and N Lam Vuong, and T Ngoc Sinh, and N Xuan Thai, and N Minh Duc
Department of Urology, Faculty of Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.

This study was to evaluate the safety and efficacy of ultrasound-guided percutaneous nephrolithotomy (US-guided PCNL) in a modified lateral position with extended legs for kidney stones. This prospective study included 46 patients underwent PCNL with US-guided renal access in the modified lateral position with extended legs from 2020 to 2021. The outcomes included the rate of successful access, complete stone clearance, operative characteristics, postoperative complications, and the need for an additional procedure. Median age was 54.5 years and males were 56.5%. Median stone burden was 2,660 mm3 and 93.5% of all patients were graded as 1 or 2 regarding the Guy's stone score. Twenty-four patients required one puncture and 14 patients required 2 punctures. Six patients had a concomitant ureteroscopic lithotripsy. Median access duration, fluoroscopy duration and hospital length of stay were 2.0 minutes, 14.5 seconds and 3 days respectively. Successful renal access rate was 100% and complete stone clearance rate was 93.5%. Complications occurred in 5 patients without mortality. Three patients required an additional procedure. US-guided PCNL in the modified lateral position with extended legs is safe and effective for kidney stones. The exposure to radiation is reduced significantly. We advocate using this approach and try to perform PCNL under X-ray free US guidance.

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
D007866 Leg The inferior part of the lower extremity between the KNEE and the ANKLE. Legs
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011446 Prospective Studies Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. Prospective Study,Studies, Prospective,Study, Prospective
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000074642 Nephrolithotomy, Percutaneous Surgical removal of large KIDNEY CALCULI by means of a percutaneous nephroscope which is passed into the KIDNEY PELVIS through a track created in the patient's back. Percutaneous Nephrolithotomy,Nephrolithotomies, Percutaneous,Percutaneous Nephrolithotomies
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective
D014463 Ultrasonography The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz. Echography,Echotomography,Echotomography, Computer,Sonography, Medical,Tomography, Ultrasonic,Ultrasonic Diagnosis,Ultrasonic Imaging,Ultrasonographic Imaging,Computer Echotomography,Diagnosis, Ultrasonic,Diagnostic Ultrasound,Ultrasonic Tomography,Ultrasound Imaging,Diagnoses, Ultrasonic,Diagnostic Ultrasounds,Imaging, Ultrasonic,Imaging, Ultrasonographic,Imaging, Ultrasound,Imagings, Ultrasonographic,Imagings, Ultrasound,Medical Sonography,Ultrasonic Diagnoses,Ultrasonographic Imagings,Ultrasound, Diagnostic,Ultrasounds, Diagnostic
D016896 Treatment Outcome Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series. Rehabilitation Outcome,Treatment Effectiveness,Clinical Effectiveness,Clinical Efficacy,Patient-Relevant Outcome,Treatment Efficacy,Effectiveness, Clinical,Effectiveness, Treatment,Efficacy, Clinical,Efficacy, Treatment,Outcome, Patient-Relevant,Outcome, Rehabilitation,Outcome, Treatment,Outcomes, Patient-Relevant,Patient Relevant Outcome,Patient-Relevant Outcomes

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