Publications by authors named "Paymon Nourparvar"

Purpose: Ureteral stent placement for decompressing renal units obstructed by calculi is safe and can be potentially lifesaving in the prompt resolution of the sequelae of renal obstruction, infection and an obstructing stone. At many institutions there can be prolonged delay in getting patients to the operating room for stent placement. We hypothesized that it is safe and efficacious to attempt ureteral stent placement using local anesthesia at the bedside without live fluoroscopic guidance.

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Background: Postoperative pain is an unavoidable consequence of open abdominal surgery. Although cryotherapy, the application of ice to a surgical wound site, has been shown to be effective in reducing postoperative pain in orthopaedic, gynecologic, and hernia operations, it has not been assessed in patients who undergo major open abdominal operations. We hypothesized that patients who receive cryotherapy would report lower pain scores as a primary outcomes measure.

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We report a case of scrotal squamous cell carcinoma in a 67-year-old man that presented as a recurrent nonhealing scrotal abscess. Radical scrotectomy and bilateral simple orchiectomy were performed. A pudendal thigh flap was used for wound closure.

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Objective: To demonstrate our approach to the microsurgical subinguinal varicocelectomy with testicular delivery.

Design: An instructional video demonstrating the surgical procedure in a step-by-step manner, highlighting useful surgical techniques.

Setting: Not applicable.

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This study focuses on the dynamic flow through the fetal aortic arch driven by the concurrent action of right and left ventricles. We created a parametric pulsatile computational fluid dynamics (CFD) model of the fetal aortic junction with physiologic vessel geometries. To gain a better biophysical understanding, an in vitro experimental fetal flow loop for flow visualization was constructed for identical CFD conditions.

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