Nathan A. Hoag
University of British Columbia
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Cuaj-canadian Urological Association Journal | 2011
Nathan A. Hoag; Kiara K. Hennessey; Alan So
Penile fracture is a rare injury most commonly sustained during sexual intercourse. We report the case of a 35-year-old man who presented with bilateral rupture of the corpora cavernosa and complete disruption of the urethra. A review of the literature on penile fracture is also presented. Urgent surgical exploration was performed and the injuries repaired primarily. In follow-up, the patient reported satisfactory erectile function. This case highlights the importance of early surgical repair and evaluation for concomitant urethral injuries in cases of penile fracture.
Journal of Surgical Education | 2012
Nathan A. Hoag; Adiel Mamut; Kourosh Afshar; Christopher L. Amling; Jennifer J. Mickelson; Andrew E. MacNeily
OBJECTIVE To interrogate case-log data for American and Canadian urology residents to define trends in minimally invasive surgery (MIS) and open surgery and compare operative experiences between these 2 groups. METHODS Case-log data from 2004 to 2009 for American urology residents was compared with Canadian residents for 8 index cases, which are routinely performed in both an MIS and open approach. These included nephrectomy (donor, radical, simple, partial), prostatectomy (radical), adrenalectomy, pyeloplasty, and nephroureterectomy. RESULTS Linear regression analysis demonstrated a significant increase in the percentage of MIS radical prostatectomies performed by American residents (11.2%-52%), compared with Canadian residents (0.74%-11.2%). There was also a significant increase in the percentage of MIS donor nephrectomies by Canadian residents (5.6%-68.7%), compared with American residents (70.1%-89.1%). For Canadian residents, exposure to the following 3 MIS procedures increased significantly over open approaches: adrenalectomy, radical prostatectomy, and donor nephrectomy. For American residents, all index procedures with the exception of adrenalectomy underwent a significant increasing trend (all p < 0.05). CONCLUSIONS Trends for 8 index procedures confirm a continuing shift towards MIS for the majority of procedures in both countries. Differences may be only temporal and relate to dissimilar health care delivery models with a resultant lag in the adoption of laparoscopy and robotics in Canada. The impact of these trends upon ultimate surgical competence of graduates remains to be seen.
Cuaj-canadian Urological Association Journal | 2014
Nathan A. Hoag; Ryan Flannigan; Andrew E. MacNeily
INTRODUCTION The introduction and advancement of minimally invasive surgery (MIS) has resulted in a reciprocal decline in exposure to open surgery during urology residency training. We propose organ procurement surgery as a potential vehicle to facilitate an increase in open surgical experience among trainees. We define the surgical case volume for organ procurement surgeries currently performed by urology residents in Canada, and determine what capacity exists for expansion. METHODS Data on organ procurement surgeries were extracted for Canadian urology residents case-logs between 2005 and 2009. Case-logs were anonymously analyzed through the voluntary self-reporting program T-Res (Resilience Software Inc.). National deceased organ donor data were obtained from the Canadian Institute for Health Information. RESULTS The graduating Canadian urology resident has performed an average of 0.95 organ procurement surgeries during 5 years of training. An average of 469.6 procurement surgeries were performed yearly in Canada between 2005 and 2009. The theoretical capacity exists for each graduating resident to perform an additional 16.3 organ procurements during residency. CONCLUSIONS With the establishment of MIS as standard of care for many urologic surgeries, the decrease in open operative experience is concerning. Innovative ways to enrich open surgical experience may be required, and increased formal incorporation of organ procurements into urology residency training curriculum may help fill the void.
The Journal of Urology | 2014
Nathan A. Hoag; Andrew E. MacNeily; Hamidreza Abdi; Victor Figueroa; Kourosh Afshar
PURPOSE VURD (posterior urethral valves, unilateral vesicoureteral reflux and renal dysplasia) syndrome is the combination of persistent unilateral vesicoureteral reflux associated with an ipsilateral dysplastic, poorly functioning kidney in patients with posterior urethral valves. It was postulated that this syndrome may result in preservation of long-term renal function due to a pressure release pop-off mechanism. We determined the effects of VURD long-term renal outcomes. MATERIALS AND METHODS We retrospectively reviewed the records of boys diagnosed with posterior urethral valves between 1983 and 2009 at a single pediatric tertiary hospital. Patients were divided into those with and those without VURD syndrome. The outcome of interest was renal impairment, defined as stage 3 or greater chronic kidney disease (glomerular filtration rate less than 60 ml/min/1.73 m(2)). RESULTS We identified 89 patients, of whom 23 (26%) had VURD. Median followup was 77 and 57 months in the VURD and nonVURD groups, respectively. Seven patients (30%) with and 26 (39%) without VURD had significant renal impairment. Survival analysis using a Cox proportional hazard model showed no association between VURD and renal impairment (HR 1.05, 95% CI 0.65-1.70). The main predictors of renal function were the creatinine nadir and patient age at diagnosis. CONCLUSIONS VURD syndrome does not seem to have a long-term protective effect on renal function.
Journal of Pediatric Surgery | 2013
Nathan A. Hoag; Kourosh Afshar; David Youssef; John S.T. Masterson; James J. Murphy; Andrew E. MacNeily
BACKGROUND/PURPOSE Intratesticular cysts are a rare clinical entity in the pediatric population. Recently, testes sparing surgery has been recommended. We share our experience with the management of pediatric testicular cysts. METHODS A retrospective review of all pediatric patients referred for intratesticular cysts was conducted at a single pediatric institution from 2002 to 2010. Charts were evaluated for patient demographics, diagnosis, and management. RESULTS Seven patients were identified and included in this series. After partial orchiectomy, the final diagnosis in three patients was epidermoid cyst. Three further patients were diagnosed as mature cystic teratoma, with two of these demonstrating adjacent intra-tubular germ cell neoplasia (ITGCN). One cyst in the series underwent spontaneous resolution after eight months. CONCLUSION All of the cystic lesions in our case series were benign with one undergoing complete resolution. The remainder became smaller and developed a solid component prompting surgery. The pre-pubertal findings of ITGCN in two patients raise a dilemma regarding the optimal long-term management for these patients. Initial conservative observation is an option for the majority of pre-pubertal cystic testicular lesions until such time that testis sparing surgery is deemed technically feasible. Testes sparing surgery should be advocated in those patients undergoing surgical management.
Cuaj-canadian Urological Association Journal | 2015
Robert Thomas Dale; Nathan A. Hoag
Isolated epididymal injury without associated underlying scrotal or testicular injury in the setting of blunt trauma is exceedingly rare. We present a case of an isolated epididymal injury incurred after scrotal trauma from a high velocity paintball round. Ultrasound demonstrated an enlarged, hypoechoic left epididymis with no evidence of underlying testicular injury. This case highlights the importance of obtaining imaging to evaluate for signs of testicular rupture, potentially obviating the need for surgery. It also reinforces the need for appropriate protective gear when participating in activities with potential for high velocity scrotal trauma.
Cuaj-canadian Urological Association Journal | 2013
Justin Zhu; Nathan A. Hoag; Paul Gustafson; Kourosh Afshar; Andrew E. MacNeily
Neuroblastoma (NBL) of the urinary bladder is an extremely rare diagnosis, with only 6 cases reported in the literature to date. We report the case of a 3-year-old boy who presented with gross hematuria, and was diagnosed with bladder NBL after partial cystectomy. Two-year follow-up has been unremarkable. This case highlights a rare neoplasm of the urinary bladder in a pediatric patient.
Cuaj-canadian Urological Association Journal | 2013
Christopher J.D. Wallis; Nathan A. Hoag; Peter Pommerville; Michael E. Huk
Cuaj-canadian Urological Association Journal | 2013
Nathan A. Hoag; Reza Hamidizadeh; Andrew E. MacNeily
Cuaj-canadian Urological Association Journal | 2013
Nathan A. Hoag; Alan I. So