Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 32
Filtrar
1.
Am J Surg ; 2024 Feb 29.
Artículo en Inglés | MEDLINE | ID: mdl-38448320

RESUMEN

BACKGROUND: Ensuring ergonomic posture and safety for surgeons is key to preventing work-related injuries and promoting sustained practice. We evaluated ergonomic aspects of Anatomic Endoscopic Enucleation of the Prostate (AEEP) and its relation to musculoskeletal injuries. METHOD: A two-month online survey involving 119 Endourological Society members provided an in-depth analysis of AEEP practices and their musculoskeletal impacts. RESULTS: The sample experienced general (65.5%), back (32.8%), neck (35.3%) and shoulder (37%) pain. Female AEEP surgeons reported greater back pain. Experience and age were inversely related to MSK injuries, and operative times over 2 â€‹h increased back pain. AEEP procedures predominantly involved sitting (86%) on backless stools (58%), with most surgeons wearing protective eyewear (75.6%) and using large resectoscopes (76.5%). Monitors were usually above eye-level (57%) and beyond 1 â€‹m (68.9%). CONCLUSION: Musculoskeletal complaints are prevalent among AEEP endourologists. More awareness and further studies on risk factors are necessary to limit work-related injuries in urology.

2.
Can Urol Assoc J ; 17(5): E128-E133, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-36758181

RESUMEN

INTRODUCTION: Percutaneous nephrolithotomy (PCNL) is a challenging procedure that urology trainees should be familiar with during residency. Simulators, such as the PERC Mentor, allow the development of this competency in a safer, stress-free environment. There are two primary fluoroscopic methods of gaining percutaneous renal access: the triangulation method and the bull's eye method. Our goal was to assess which method is easier to teach novices by using the PERC Mentor simulator. A secondary goal was to assess differences in subjective and objective outcomes. METHODS: Fifteen simulator and procedure-naive medical trainees were randomized into two groups using a crossover, randomized study design. Participants were provided with written, video, in-person demonstrations and hands-on practice for each technique. They then performed each method and were assessed objectively using the PERC Mentor performance data report and subjectively using the PCNL global rating scale (GRS) scoring system. Statistical analysis was performed using Student's T-test and non-parametric Wilcoxon signed rank test. RESULTS: There was no statistical difference in the outcomes and complication rates between the two methods. The bull's eye method of obtaining percutaneous access was associated with a significant decrease in operative time (91 seconds vs. 128 seconds, p=0.03) and fluoroscopy time (87 seconds vs. 123 seconds, p=0.03) compared to the triangulation method. CONCLUSIONS: Teaching of both techniques was equally well acquired by students. Both techniques had similar outcomes; however, the bull's eye method was associated with less operative and fluoroscopy time when compared to the triangulation method among novices.

3.
Obstet Gynecol ; 141(2): 375-378, 2023 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-36649323

RESUMEN

BACKGROUND: Uterine artery embolization (UAE) is a minimally invasive procedure for treatment of symptomatic uterine leiomyomas, but long-term complications are under-reported. CASE: This is the case of a healthy 51-year-old woman who had previously undergone UAE for symptomatic uterine leiomyomas. The patient presented with gross hematuria and pelvic pain 10 years later. She was found to have both a vesicouterine and a uteroduodenal fistula. The patient was successfully treated with hysterectomy, excision of the vesicouterine fistula, partial cystectomy, excision of the duodenal fistula, and primary duodenal repair. CONCLUSION: Complex gynecologic fistulas may occur as a long-term complication in symptomatic women with a history of UAE.


Asunto(s)
Embolización Terapéutica , Fístula , Leiomioma , Embolización de la Arteria Uterina , Neoplasias Uterinas , Femenino , Humanos , Persona de Mediana Edad , Embolización de la Arteria Uterina/efectos adversos , Embolización de la Arteria Uterina/métodos , Neoplasias Uterinas/cirugía , Leiomioma/cirugía , Histerectomía , Fístula/terapia , Resultado del Tratamiento , Embolización Terapéutica/efectos adversos , Embolización Terapéutica/métodos
4.
Can Urol Assoc J ; 17(3): E95-E99, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36473473

RESUMEN

INTRODUCTION: There are no clinical guidelines for the manipulation of chronic indwelling ureteral stents. The goal of this study was to survey, through a simulated case, how urologists initially manage a patient with a chronic ureteral stent presenting with urosepsis. METHODS: An online questionnaire was shared from July 1 to August 31, 2021, through social media (Twitter) and email lists. The scenario described a 50-year-old female, known for a chronic indwelling ureteral stent, presenting to the emergency department with fever, tachycardia, and flank pain. In the scenario, the stent was in adequate position and the last exchange had been performed one month prior. Respondents could choose between treating with antibiotics and keeping the same exchange schedule, urgent stent exchange, or an alternative management that they defined. P<0.05 was considered significant. RESULTS: A total of 396 participants completed the survey. Responses from 48 countries were collected, with 135 (34.1%) respondents from Canada. Half (50%) of respondents had more than 10 years of experience. Most (79.3%) respondents opted for initial empiric antibiotic therapy, while 16.2% opted for urgent stent exchange. A total of 19 (4.9%) medical specialists completed the survey. Non-urologists opted more frequently than urologists (42.1% vs. 16.2%) for urgent stent exchange (p=0.0111). CONCLUSIONS: This questionnaire allowed us to explore the various managements proposed by urologists in a patient with urosepsis and chronic indwelling ureteral stent. Most urologists opted for initial medical management. Further clinical studies could help determine the necessity for ureteral stent manipulation in urosepsis, and, if present, its ideal timing.

6.
Can Urol Assoc J ; 14(9): E435-E444, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32223876

RESUMEN

INTRODUCTION: We aimed to compare objective structured clinical examinations (OSCE) performance of residents from four Canadian urology programs, based on resident and station characteristics. We also aimed to evaluate OSCE contents by station type and subspecialty. METHODS: Scores of 109 postgraduate year (PGY)-3 to PGY-5 residents were retrospectively reviewed from 19 OSCEs from May 2008 to February 2019. Scores were grouped by station type/subspecialty, PGY level, medical graduate type (Canadian medical graduate [CMG], international medical graduate [IMG]), sex, and choice of fellowship/practice. Linear mixed modelling was performed to obtain least square means to account for repeated measures. RESULTS: Score increases from PGY-3 to PGY-5 were significant for all station types and subspecialties (p≤0.001). Scores were similar between male and female residents, and between CMGs and IMGs, except in visual recognition examinations (VREs) (males: 44.3±1.0, females: 39.0±1.6, p=0.005; IMG: 47.3±1.7, CMG: 41.6±0.9, p=0.004). Relative to uro-oncology stations, scores were lower in andrology (p=0.010) and functional urology (p<0.001). More female residents chose pediatric (14.3% vs. 1.5%, p=0.024) and functional urology fellowships (17.9% vs. 2.9%, p=0.021). More male residents chose endourology/robotic fellowships (30.9% vs. 10.7%, p=0.042). No associations between subspecialty scores and choice of fellowship/practice were found. Oral stations and VREs were more frequent than telephone stations. Uro-oncology and pediatric urology were more frequent than other subspecialties. CONCLUSIONS: Scores improved with higher PGY level. IMGs and male residents scored better in VREs. Scores were lower in functional urology. There was no correlation between subspecialty score and choice of fellowship/practice. Subspecialties and forms of evaluation were not equally represented.

7.
J Endourol ; 34(5): 624-628, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-32143552

RESUMEN

Objective: To compare regular and Moses modes of holmium laser lithotripsy during ureteroscopy in terms of fragmentation/pulverization and procedural times in addition to perioperative complications. Patients and Methods: After obtaining ethics approval, a prospective double-blinded randomized trial was conducted for patients undergoing holmium laser lithotripsy during retrograde ureteroscopy. Patients were randomly assigned to either regular or Moses modes. Patients and surgeons were blinded to the laser mode. Lumenis 120W generator with 200 Moses D/F/L fibers were used. Demographic data, stone parameters, perioperative complications, and success rates were compared. The degree of stone retropulsion was graded on a Likert scale from 0-no retropulsion to 3-maximum retropulsion. Results: A total of 72 patients were included in the study (36 per arm). Both groups were comparable in terms of age and preoperative stone size (1.4 cm vs 1.7 cm, p > 0.05). When compared with the regular mode, Moses mode was associated with significantly lower fragmentation/pulverization time (21.1 minutes vs 14.2 minutes; p = 0.03) and procedural time (50.9 minutes vs 41.1 minutes, p = 0.03). However, there were no significant differences in terms of lasing time (7.4 minutes vs 6.1 minutes, p > 0.05) and total energy applied to the stones (11.1 kJ vs 10.8 kJ, p > 0.05). Moses mode was associated with significantly less retropulsion (mean grade was 1.0 vs 0.5, p = 0.01). There were no significant differences between both modes in terms of intraoperative complications (11.1% vs 8.3%, p > 0.05), with one patient requiring endoureterotomy for stricture in the Moses group. Success rate at the end of 3 months was comparable between both groups (83.3% vs 88.4%, p > 0.05). Conclusion: Moses technology was associated with significantly lower fragmentation/pulverization and procedural times. The reduced fragmentation/pulverization time seen using Moses technology could be explained by the significantly lower retropulsion of stones during laser lithotripsy.


Asunto(s)
Láseres de Estado Sólido , Litotripsia por Láser , Litotricia , Cálculos Ureterales , Holmio , Humanos , Láseres de Estado Sólido/uso terapéutico , Estudios Prospectivos , Cálculos Ureterales/terapia , Ureteroscopía
9.
Can Urol Assoc J ; 12(2): 52-58, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29381459

RESUMEN

INTRODUCTION: We aimed to assess flexible ureteroscopic stone extraction skill of urology postgraduate trainees (PGTs) at an Objective Structured Clinical Examination (OSCE) and to determine whether previous experience in the operating theatre or practice on the simulator correlated with performance. METHODS: After obtaining ethics approval, PGTs from postgraduate years (PGYs) 3-5 were recruited from all four Quebec urology training programs during an OSCE. After a short orientation to the UroMentor™ simulator, PGTs were asked to perform Task 10 for 15 minutes, where two small stones from the left proximal ureter and renal pelvis were extracted using a basket. Competency of PGTs in performing the task was assessed using objective assessment from the simulator and subjective evaluations using Ureteroscopy-Global Rating Scale (URS-GRS). Simulator performance reports and URS-GRS scores were analyzed. RESULTS: Thirty PGTs (9 PGY-3, 11 PGY-4, 10 PGY-5) participated in this study. PGTs had performed a mean of 55.9 semi-rigid and 45.7 flexible ureteroscopies prior to the study. Mean URS-GRS score of the participants was 20.0±4.4. Using norm-referenced method with three experts, cutoff score of 19 on the URS-GRS was determined to indicate competency. Sixty percent (18/30) of PGTs were competent. All eight PGTs who had practiced on the simulator were competent. Previous experience in the operating theatre and PGY level did not correlate with performance. CONCLUSIONS: This study confirmed the feasibility of incorporating the UroMentor at OSCEs to assess competency of urology PGTs in ureteroscopic stone extraction skill. PGTs who practiced on the simulator scored significantly higher than those who did not practice; however, the software needs to be updated to improve its face validity and to include more complex tasks, such as holmium laser lithotripsy. Future studies with larger sample sizes and more complex cases are needed to confirm these results.

10.
Turk J Urol ; 43(2): 183-188, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28717544

RESUMEN

OBJECTIVE: To study the effect of ascorbic acid (AA) supplementation on urinary pH, metabolic stone workup parameters, and development of de novo urolithiasis in stone-forming patients. MATERIAL AND METHODS: A retrospective review of the patients followed-up at a tertiary stone centre between September 2009 and October 2015 was performed. Patients with recurrent urolithiasis who received AA supplementation as a urinary acidifying agent were included in the study. Detailed metabolic stone work-up, including two 24-hour urine collections obtained pre- and post-AA supplementation were compared. In addition, imaging studies were reviewed to assess the development of de novo urolithiasis. RESULTS: Twenty-four patients were included in the study with a mean age of 60.6 years and a median daily AA dose of 1000 mg (range: 500-2000 mg). Median follow-up period was 22.6 months (range: 19.7-32.1). After AA supplementation, there was a significant decrease in urinary pH (7.6 vs. 6.9, p=0.02). Although there was no significant increase in the daily oxalate excretion, two patients (8.3%) had their AA dose reduced or discontinued due to de novo hyperoxaluria (342.9 vs 510.2 umol/day; p=0.75). Other serum and urinary parameters did not show any significant changes. Eight (33.3%) patients developed de novo urolithiasis with struvite and carbonate apatite being the major components. CONCLUSION: AA supplementation resulted in significantly lower urinary pH in patients with recurrent urolithiasis and alkaline urine pH. Prospective studies are needed to assess whether this reduction in urinary pH is associated with lower stone recurrence rates.

11.
World J Urol ; 34(5): 733-9, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26242727

RESUMEN

OBJECTIVE: To assess competency of urology post-graduate trainees (PGTs) in percutaneous renal access (PCA). METHODS: Upon obtaining ethics approval and informed consents, PGTs between post-graduate years (PGY-3 to PGY-5) from all four urology programs in Québec were recruited. PCA competency of each participant was assessed objectively by performing task 4 on the PERC Mentor™ simulator, where they had to correctly access and pop 7 balloons in 7 different renal calyces and subjectively by the validated Percutaneous Nephrolithotomy-Global Rating Scale (PCNL-GRS). RESULTS: A total of 26 PGTs with a mean age of 29.2 ± 0.7 years participated in this study. When compared with the 21 PGTs without practice, all 5 PGTs who had practiced on the simulator were competent (p = 0.03), performed the task with significantly shorter operative time (13.9 ± 0.7 vs. 4.4 ± 0.4 min; p < 0.001) and fluoroscopy time (9.3 ± 0.6 vs. 3.4 ± 0.4 min; p < 0.001), and had significantly higher PCNL-GRS scores (13 ± 0.6 vs. 20.6 ± 1; p < 0.001) and successful attempts to access renal calyces (23 ± 5 vs. 68.7 ± 11; p = 0.001). According to a pass score of 13/25, thirteen PGTs were competent. Competent PGTs performed the task with significantly shorter fluoroscopy time (9.8 vs. 6.5 min; p = 0.01) and higher percentage of successful attempts to access renal calyces (p < 0.001), higher PCNL-GRS scores (p < 0.001), and lower complications (p = 0.01). CONCLUSION: The PCNL-GRS in combination with the PERC Mentor™ simulator was able to differentiate between competent and non-competent PGTs.


Asunto(s)
Competencia Clínica , Simulación por Computador , Nefrostomía Percutánea/normas , Adulto , Femenino , Humanos , Masculino , Interfaz Usuario-Computador
12.
Can Urol Assoc J ; 9(1-2): e61-6, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25737763

RESUMEN

INTRODUCTION: We evaluated the use of the GreenLight Simulator (GL-SIM) (American Medical Systems, Guelph, ON) in the skill assessment of postgraduate trainees (PGTs) in photoselective vaporization of the prostate (PVP). We also sought to determine whether previous PVP experience or GL-SIM practice improved performance. METHODS: PGTs in postgraduate years (PGY-3 to PGY-5) from all 4 Quebec urology training programs were recruited during 2 annual Objective Structured Clinical Examinations (OSCEs). During a 20-minute OSCE station, PGTs were asked to perform 2 exercises: (1) identification of endoscopic landmarks and (2) a PVP of a 30-g normal prostate. Grams vaporized, global scores, and number of correct anatomical landmarks were recorded and correlated with PGY level, practice on the GL-SIM, and previous PVP experience. RESULTS: In total, 25 PGTs were recruited at each OSCE, with 13 PGTs participating in both OSCEs. When comparing scores from the first and second OSCEs, there was a significant improvement in the number of grams vaporized (2.9 vs. 4.3 g; p = 0.003) and global score (100 vs. 165; p = 0.03). There was good correlation between the number of previously performed PVPs and the global score (r = 0.4, p = 0.04). Similarly, PGTs with previous practice on the GL-SIM had significantly higher global score (100.6 vs. 162.6; p = 0.04) and grams vaporized (3.1 vs. 4.1 g; p = 0.04) when compared with those who did not practice on GL-SIM. Furthermore, there were significantly more competent PGTs among those who had previously practiced on the GL-SIM (32.7% vs. 10.2%; p = 0.009). PGY level did not significantly affect grams vaporized or global score (p > 0.05). CONCLUSION: Performance on the GL-SIM at OSCEs significantly correlated with previous practice on the GL-SIM and previous PVP experience rather than PGY level. Furthermore, there were significantly more competent PGTs among those who had previously practiced on the GL-SIM.

13.
Can Urol Assoc J ; 8(7-8): 268-72, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25210551

RESUMEN

INTRODUCTION: The aim of this study was to examine endogenous biotin levels in tumour specimens collected from patients with renal and testicular tumours and compare them to the surrounding non-neoplastic surgical margin. METHODS: Frozen samples were obtained from the Ontario Tumour Bank. Renal and testicular tumour tissue were included in this study. Normal tissue from the negative surgical margins of each tumour served as a control. Biotin detection in tissue specimens was determined using immunohistochemistry (IHC). RESULTS: Specimens collected from 56 patients (36 men and 20 women) were included in this study. Histopathology of the 52 renal tumours included 31 (60%) conventional type RCC, 5 (10%) chromophobe RCC, 5 (10%) papillary RCC, 1 (2%) oncocytoma and 10 (19%) upper tract urothelial carcinoma (UC). The 4 testicular tumours included 1 seminomatous (25%) germ cell tumour and 3 (75%) non seminomatous germ cell tumours. CONCLUSION: No biotin signal was perceived in all tested tumour samples. Endogenous biotin expression was detected in the matching non-neoplastic surgical margin of tested renal tissues. This lack of staining may prove to be a valuable tool in future studies.

14.
Can Urol Assoc J ; 8(1-2): 40-6, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24578744

RESUMEN

INTRODUCTION: Ochratoxin-A (OTA) is one of the most abundant food-contaminating mycotoxins, known for its nephrotoxicity, neurotoxicity, gonadotoxicity, teratogenicity, immunosuppression and carcinogenesis. OTA has been linked to several genitourinary pathologies, including Balkan nephropathy and genitourinary malignancies. We examine OTA levels in serum samples and tumour specimens collected from patients with renal and testicular tumours. METHODS: Frozen samples were obtained from the Ontario Tumour Bank. Serum specimens, along with renal and testicular tumour biopsies, were included in this study. Normal tissue from the negative surgical margins of each tumour served as a control. OTA levels in serum was measured using the enzyme-linked immunosorbent assay (ELISA), while OTA detection in tissue specimens was determined using immunohistochemistry (IHC). RESULTS: We included specimens collected from 56 patients (36 men and 20 women). Histopathology of the 52 renal tumours included 31 (60%) conventional type renal cell carcinomas (RCC), 5 (10%) chromophobe RCC, 5 (10%) papillary RCC, 1 (2%) oncocytoma and 10 (19%) upper tract urothelial carcinoma (UC). The 4 testicular tumours included 1 seminomatous (25%) germ cell tumour and 3 (75%) non-seminomatous germ cell tumours. OTA was detected in the serum of renal tumour patients, with a range from 0.004 to 0.25 ng/mL (mean: 0.07 and median 0.06 ng/mL). There was no OTA signal detected by IHC staining in all tested renal and testicular tumours. CONCLUSIONS: The OTA levels detected in the serum of patients were highly variable and relatively low. No OTA was detected in the tissue samples.

15.
Can Urol Assoc J ; 7(11-12): E740-9, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-24282468

RESUMEN

We performed a systematic review of publications describing a correlation between oral anticoagulant medications and intravesical BCG outcome. We collected information on the impact of such medications on tumour recurrence and progression and we excluded papers not reporting outcome correlations. Patients were divided into group 1 and 2 based on whether they were taking or not taking any anticoagulant medications. A total of 7 manuscripts published between 1990 and 2009 were included in this study. Data heterogeneity precluded meta-analysis. In studies combining all anticoagulant medications, 3 out of 5 (60%) publications did not identify any difference in outcome, while 2 (40%) documented significantly more recurrences in group 1 patients. In studies performing multivariate analysis and only examining the intake of 1 medication, warfarin alone seemed to be associated with increased risk of bladder tumour recurrences and progression following intravesical BCG treatment, while ASA alone seemed to be associated with more protective effects. There is no strong evidence to support the allegations of a protective role of ASA and a deleterious role for warfarin. Further, well-designed experimental and clinical studies are needed to clarify the mechanism of action of intravesical BCG along with possible drug interactions.

16.
J Endourol ; 27(12): 1455-62, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24180435

RESUMEN

BACKGROUND AND PURPOSE: Shockwave lithotripsy (SWL) and ureteroscopy (URS) are minimally invasive treatment alternatives for kidney stones. Although less invasive, SWL subjects the renal parenchyma to a high level of energy and the potential to cause renal injury. The ability to detect renal injury post-SWL in a reliable and noninvasive way would be clinically beneficial. Kidney injury molecule 1 (KIM-1) and N-acetyl-ß-D-glucosaminidase (NAG) are two proteins secreted by the kidney into the urine and have been found to be sensitive markers of acute kidney injury in transplant patients. The aim of this work was to measure urinary levels of KIM-1 and NAG in patients with kidney stone who were treated by SWL or URS and in nonstone volunteers. PATIENTS AND METHODS: Patients with kidney stones who were treated by SWL (n = 50) or URS (n = 10) were recruited. Voided urine samples were collected before and 2 to 3 hours after URS and SWL. In addition, further urinary specimens were collected 2 days and 2 weeks post-SWL treatment. Voided urine samples from healthy volunteers were also collected. RESULTS: Mean KIM-1 values were increased in patients with kidney stones when compared with volunteers. KIM-1 and NAG levels significantly increased post-SWL and returned to baseline within 2 weeks post-SWL. Poor kidney function was significantly associated with increased biomarker activity both in baseline and post-SWL measurements. There was no significant change in urinary KIM-1 and NAG concentrations before and after URS. CONCLUSIONS: Kim-1 and NAG levels significantly increased post-SWL treatment suggesting a potential role for these urinary markers in identifying patients at higher risk of tissue injury.


Asunto(s)
Cálculos Renales/orina , Riñón/lesiones , Litotricia/efectos adversos , Glicoproteínas de Membrana/orina , Proteínas de Neoplasias/orina , Ureteroscopía/efectos adversos , Adolescente , Adulto , Anciano , Biomarcadores/orina , Estudios de Casos y Controles , Ensayo de Inmunoadsorción Enzimática , Femenino , Receptor Celular 1 del Virus de la Hepatitis A , Humanos , Cálculos Renales/terapia , Masculino , Persona de Mediana Edad , Nefrolitiasis , Receptores Virales , Adulto Joven
17.
Arab J Urol ; 11(3): 194-202, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26558082

RESUMEN

OBJECTIVES: To provide a contemporary review of the epidemiology, diagnosis and treatment of premature ejaculation (PE) and erectile dysfunction (ED). METHODS: We searched for English-language articles published in the past 12 months using the PubMed database. Relevant articles on the subjects of sexual dysfunction, ED and PE were selected for review. CONCLUSIONS: Recent studies on male sexual dysfunction have provided new therapeutic possibilities. Tramadol, a well-used analgesic, has a new role in the treatment of PE. Super-selective targeting of dorsal penile nerves by surgery or cryoablative technologies might become a viable treatment option for refractory PE in the future. The role of ED as a harbinger of important comorbidities allows for the early detection and intervention of these conditions, which can optimise therapeutic outcomes. The long-term effect of chronic phosphodiesterase-5 inhibitors on endothelial dysfunction, the angiogenic potential of low-intensity extracorporeal shock wave therapy, and further advances in drug-eluting endovascular stents might in future allow clinicians to treat ED more definitively.

18.
Urology ; 79(1): 43-7, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21940040

RESUMEN

OBJECTIVE: To quantify the effective radiation dose associated with the evaluation and follow-up of patients with urolithiasis. METHODS: Retrospective review was performed for consecutive patients presenting to a tertiary stone clinic with acute stone episodes between November 2007 and December 2008, and had at least 2 years of follow-up. Number and modality of imaging studies were collected. Effective radiation exposure (ERE) doses were calculated from the dose length product values reported with each computed tomography (CT) scan. RESULTS: There were 72 males and 32 females with a mean age of 49 years (range 21-78). Patients underwent an average 1.8 (range 0-5) and 0.7 (range 0-2) plain radiographs, 0.82 (range 0-4) and 0.15 (range 0-2) CTs, 0.09 (range 0-1) and 0.03 (range 0-1) intravenous urograms, and 0.3 (range 0-1) and 0.6 (range 0-2) ultrasounds (US) during the first and second years, respectively (all P<.05). The average calculated ERE dose per CT scan was 23.16 mSv (range 4.94-72.77). The calculated mean ERE dose per patient significantly decreased from 29.29 mSv (range 1.7-77.27) in the first year to 8.04 mSv (range 1.4-24.72) in the second year (P<.01). This was because of significantly fewer CT scans and significantly more US imaging during the second year (P<.05). Although 18 (17.3%) patients exceeded 50 mSv during the first year, none exceeded this threshold during the second year. The mean ERE dose did not correlate with stone location, patient age, and sex. CONCLUSION: The calculated mean ERE dose significantly decreased during the second year of follow-up in patients with urolithiasis because of significantly higher use of US.


Asunto(s)
Dosis de Radiación , Protección Radiológica/métodos , Urolitiasis/diagnóstico por imagen , Enfermedad Aguda , Adulto , Factores de Edad , Anciano , Estudios de Cohortes , Relación Dosis-Respuesta en la Radiación , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Monitoreo Fisiológico/métodos , Estudios Retrospectivos , Medición de Riesgo , Índice de Severidad de la Enfermedad , Factores Sexuales , Tomografía Computarizada por Rayos X/métodos , Ultrasonografía Doppler , Urografía/métodos , Urolitiasis/terapia , Adulto Joven
19.
Hum Reprod ; 26(6): 1288-95, 2011 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-21429953

RESUMEN

BACKGROUND: Several studies have examined the relationship between direct antisperm antibody (ASA) levels in semen and pregnancy rate after advanced assisted reproductive technologies (ARTs) but the results have been inconsistent. The aim of our study was to further evaluate the relationship between ASA and pregnancy after IVF or ICSI by systematic review and meta-analysis. METHODS: We conducted a systematic Medline search of all relevant full papers on direct semen ASA and pregnancy after IVF or ICSI. Three investigators independently reviewed the papers, followed by group discussion to choose the included papers. Meta-analysis was performed to get an odds ratio (OR) for the effect of ASA on pregnancy using IVF or ICSI. RESULTS: The study identified and analyzed 16 valid studies (10 IVF and 6 ICSI). The study characteristics (including the ASA cutoff values) were heterogeneous. Our meta-analysis revealed that the combined OR for failure to achieve a pregnancy using IVF or ICSI in the presence of positive semen ASA was 1.22 (95% CI: 0.84, 1.77) and 1.00 (95% CI: 0.72, 1.38), respectively. The overall (IVF + ICSI) combined OR was 1.08 (95% CI: 0.85, 1.38). CONCLUSION: This systematic review and meta-analysis indicate that semen antisperm antibodies are not related to pregnancy rates after IVF or ICSI, suggesting that both forms of ART remain viable options for infertile couples with semen ASA. However, additional, well-designed prospective studies using appropriate ASA cutoff levels are needed to further address this issue.


Asunto(s)
Anticuerpos/análisis , Fertilización In Vitro , Índice de Embarazo , Inyecciones de Esperma Intracitoplasmáticas , Espermatozoides/inmunología , Femenino , Humanos , Masculino , Oportunidad Relativa , Embarazo , Semen/inmunología
20.
World J Urol ; 28(4): 419-23, 2010 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-19826825

RESUMEN

PURPOSE: Partial cystectomy (PC) remains a viable alternative to radical cystectomy (RC) for management of invasive bladder cancer in approximately 5% of patients. We used a population-based database to examine practice patterns and recurrence after partial cystectomy. MATERIALS AND METHODS: We obtained billing records of all partial and radical cystectomies performed for bladder cancer in Quebec from 1983 until 2005. Analysis included age, gender, year of surgery, surgeon's age, hospital type, preoperative and postoperative visits with accompanying diagnoses and dates of recurrences salvage RC, and death. RESULTS: A total of 714 (30.4%) patients with invasive bladder cancer underwent PC. Majority of PC (65%) were performed in non-academic institutions. Pelvic lymphadenectomy was performed in only 163 patients (23%) and concomitant ureteral reimplantation was performed in 89 patients (13%). Of 714 patients, 52 (23.7%) required a salvage RC. Median time from PC to salvage RC was 17.6 months (range 1-240 months), respectively. Patients who underwent PC had similar 5-year overall survival compared with patients who underwent upfront RC (49.8% vs. 51%, p = 0.21). CONCLUSIONS: Rate of PC for invasive bladder cancer is significantly higher than expected. Pelvic lymphadenectomy is underutilized in bladder cancer patients treated with PC. Whether prevalent use of PC is due to less stringent selection criteria remains unknown. Since late recurrence is not uncommon, lifelong follow-up is recommended.


Asunto(s)
Cistectomía/métodos , Recurrencia Local de Neoplasia/mortalidad , Práctica Profesional/estadística & datos numéricos , Neoplasias de la Vejiga Urinaria/mortalidad , Neoplasias de la Vejiga Urinaria/cirugía , Anciano , Cistectomía/mortalidad , Bases de Datos Factuales , Femenino , Humanos , Estimación de Kaplan-Meier , Escisión del Ganglio Linfático/mortalidad , Masculino , Persona de Mediana Edad , Prevalencia , Quebec/epidemiología , Terapia Recuperativa/mortalidad
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...