Ahmed A. Hussein

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OBJECTIVE To analyze and categorize causes for interruptions during robot-assisted surgery. METHODS We analyzed 10 robot-assisted prostatectomies that were performed by 3 surgeons from October 2014 to June 2015. Interruptions to surgery were defined in terms of duration, stage of surgery, personnel involved, reasons, and impact of the interruption on the(More)
PURPOSE We describe the outcomes of patients with low risk localized prostate cancer who were upgraded on a surveillance biopsy while on active surveillance and evaluated whether delayed treatment was associated with adverse outcome. MATERIALS AND METHODS We included men in the study with lower risk disease managed initially with active surveillance and(More)
Stem cells (SCs) are undifferentiated cells that are capable of self-renewal and differentiation and that therefore contribute to the renewal and repair of tissues. Their capacity for division, differentiation, and tissue regeneration is highly dependent on the surrounding environment. Several preclinical and clinical studies have utilized SCs in urological(More)
OBJECTIVES To compare percutaneous nephrostomy (PCN) tube vs JJ ureteric stenting as the initial urinary drainage method in children with obstructive calcular anuria (OCA) and post-renal acute renal failure (ARF) due to bilateral ureteric calculi, to identify the selection criteria for the initial urinary drainage method that will improve urinary drainage,(More)
PURPOSE There is a paucity of data regarding the operative management of complications after robot-assisted radical cystectomy. We reviewed operative management of robot-assisted radical cystectomy specific complications during our 10-year experience with this procedure and assessed the feasibility, safety and outcomes of robot-assisted reoperations. (More)
OBJECTIVES To design a data collection methodology to capture team activities during robot-assisted surgery (RAS) (team communications, surgical flow, and procedural interruptions), and use relevant disciplines of Industrial Engineering and Human Factors Engineering to uncover key issues impeding surgical flow and guide evidence-based strategic changes to(More)
OBJECTIVE To analyse ambulatory movements and team dynamics during robot-assisted surgery (RAS), and to investigate whether congestion of the physical space associated with robotic technology led to workflow challenges or predisposed to errors and adverse events. METHODS With institutional review board approval, we retrospectively reviewed 10 recorded(More)
PURPOSE Ureteroenteric strictures represent the most common complication requiring reoperation after radical cystectomy. We investigated the prevalence, outcomes, predictors and management of ureteroenteric strictures. MATERIALS AND METHODS We retrospectively reviewed our quality assurance, robot assisted radical cystectomy database to identify patients(More)
OBJECTIVES Patulous Eustachian tube (PET) is a challenging clinical problem with limited medical and surgical options. The current study systematically reviews the literature to determine the safety and efficacy of surgical treatments for PET. DATA SOURCES Medline, Google Scholar, and Cochrane databases. METHODS Studies evaluating the surgical(More)
OBJECTIVES To describe and evaluate our protocol for management of children≤4years old with obstructive calcular anuria (OCA) and acute renal failure (ARF) to improve selection of initial urinary drainage (ID) method and to facilitate subsequent definitive stone management (DSM) as studies discussing this special group of patients are still few. PATIENTS(More)