Yi Huang¹, Giovanni Biglino¹, Fengyuan Liu^2,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.32, No.2, pp. 1-1, 2024, DOI:10.32604/icces.2024.013295

Abstract Coarctation of aorta (CoA) is one of the congenital heart diseases with a proportion of 5% to 10%, which has a prevalence of four per 10,000 babies. As the most common cardiac defect missed at routine physical exams, CoA has a high undiagnosed rate of 60% to 80% in newborns before hospital discharge. The insertion of bare metal stents (BMS) with balloon dilatation is the useful method to reopen the narrow area of aorta. However, the stented vessel has a fixed diameter and cannot grow with the age, resulting in a relative restenosis and frequent… More >

Enzoh Langi¹, Liguo Zhao^2,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.010163

Abstract Additive manufacturing emerges as an innovative technology to fabricate medical stents used to treat blocked arteries. However, there is a lack of study of underlying microstructure and mechanical properties of additively manufactured stent. In this work, additively manufactured 316L stainless steel stent was investigated, with electrochemical polishing being used to improve the surface finish. Microstructural characterisation was carried out using optical microscopy, scanning electron microscopy, and electron backscatter diffraction. The hardness and elastic modulus were measured using Berkovich nanoindentation, with an emphasis on the effect of grain orientation. In addition, spherical nanoindentation was used to… More >

Sibao Wang, Silin Pan^*, Gang Luo, Zhixian Ji, Na Liu

Congenital Heart Disease, Vol.17, No.1, pp. 45-60, 2022, DOI:10.32604/CHD.2022.016332 - 26 October 2021

Abstract The aim of this study was to perform a systematic review and meta-analysis to evaluate the safety and efficacy of ductus arteriosus stent (DAS) compared with surgical systemic-pulmonary artery shunt (SPS) in patients with ductal-dependent pulmonary blood flow. A literature search was conducted in PubMed, Embase, and the Cochrane Library databases from their inception to December 2020. Two reviewers independently screened the articles, evaluated the quality of the articles, and collected the data. Meta-analyses were conducted using fixed and random effects models. We used the I-square (I² ) test to examine heterogeneity and the funnel plot… More >

Michael E. Rezaee¹, Annah J. Vollstedt¹, Tammer Yamany², Manoj Monga^3,4, Amy Krambeck^4,5, Ojas Shah^4,6, Roger L. Sur^3,4, Anna M. Zampini^4,7, Kymora B. Scotland^4,8, Ben H. Chew^4,8, Brian H. Eisner^2,4, Vernon M. Pais Jr^1,4

Canadian Journal of Urology, Vol.28, No.1, pp. 10516-10521, 2021

Abstract Introduction: To assess the relationship between pain after ureteral stent removal and patient and procedural factors.
Materials and methods: A validated survey designed to assess the relationship between quality of life and treatment decisions in kidney stone disease was randomly distributed to patients with a history of a ureteral stent in seven medical centers across North America participating in an endourology research collaborative between July 2016 and June 2018. The primary outcome was increased pain after ureteral stent removal. Statistical analyses were performed using Chi-square and multiple logistic regression.
Results: A total of 327 surveys were analyzed. Twenty… More >

Jonathan Ewald¹, Herbert Hodgson¹, Jerry Thomas¹, Nazih Khater², Mohamed Keheila², Muhannad Alsyouf², Javier L. Arenas², Mohammad Hajiha², D. Duane Baldwin²

Canadian Journal of Urology, Vol.27, No.2, pp. 10174-10180, 2020

Abstract Introduction: To improve the success rate and safety of ureteral stent insertion, we sought to identify the effect of guidewire type and prior use upon the force needed to advance a 6Fr ureteral stent over various guidewires.
Materials and methods: Two hundred forty stent insertion trials were performed in an ex vivo porcine urinary tract model. Ten trials were randomly performed over 12 new and 12 used guidewires. For each trial, the force required to advance a 6Fr Cook double-pigtail ureteral stent was recorded. Guidewires included the Olympus Glidewire, Cook Fixed Core, and Boston Scientific Amplatz Super… More >

Jesse Lee, Doaa Abdullah Shahbah, Howaida El‐Said, Rodrigo Rios, Kanishka Ratnayaka, John Moore

Congenital Heart Disease, Vol.14, No.2, pp. 288-296, 2019, DOI:10.1111/chd.12726

Abstract Background: In the modern era, results of the arterial switch operation (ASO) for transposition of the great arteries are excellent. However, because of the LeCompte maneuver, there may be a propensity for development of pulmonary artery stenosis. We encountered atypical complications of pulmonary artery stenting in patients after the ASO, including aorto‐pulmonary fistula and coronary compression.
Methods: We performed a 10‐year retrospective review of catheterizations per‐ formed in patients after ASO in our institution with a focus on adverse events.
Results: Diagnostic and interventional catheterizations were performed in 47 pa‐ tients. In 29 patients, 37 interventional procedures performed,… More >

Karen M. Doersch¹, G. Luke Machen², Kim H. Thai², John Sung², Marawan M. El Tayeb²

Canadian Journal of Urology, Vol.25, No.6, pp. 9596-9600, 2018

Abstract Introduction: Stent placement is a common procedure for addressing obstructive uropathy. However, lack of operating room (OR) availability can substantially delay this procedure. In this study, we sought to assess the feasibility, safety, and efficacy of this procedure in a clinical setting using nitrous oxide (N₂O) and local anesthesia.
Materials and methods: Patients included in this study included those who were determined to need management of urinary obstruction with a JJ (“double J”) stent and had their procedure performed in the clinic procedure suite with N₂O anesthesia.
Results: We present a case series of 565 patients undergoing ureteral stent… More >

Zenon Pogorelić^1,2, Tomislava Brković², Dražen Budimir¹, Jakov Todorić¹, Đurđica Košuljandić³, Ana Jerončić⁴, Mihovil Biočić¹, Marijan Saraga^2,3

Canadian Journal of Urology, Vol.24, No.3, pp. 8853-8858, 2017

Abstract Introduction: The aim of this study was to determine the efficacy and potential complications of double-J ureteric stents in the treatment of primary hydronephrosis in pediatric patients.
Materials and methods: A retrospective case-records review of 133 patients (45 girls and 88 boys) treated because of primary hydronephrosis with double-J ureteric stents, in Department of Pediatric Surgery, Split University Hospital, between December 1997 and December 2014, was performed. Success of treatment, results of follow up investigations and complications were recorded. Patients were followed up clinically and radiologically for a minimum of 2 years following stent insertion.
Results: In all, 133… More >

Lee Baumgarten, Anuj Desai, Scott Shipman, Daniel D. Eun, Michel A. Pontari, Jack H. Mydlo, Adam C. Reese

Canadian Journal of Urology, Vol.24, No.5, pp. 9024-9029, 2017

Abstract Introduction: To determine rates of spontaneous ureteral stone passage in patients with indwelling ureteral stents, and to identify factors associated with the spontaneous passage of stones while a ureteral stent is in place.
Materials and methods: From our institutional database, we identified patients who underwent ureteroscopic procedures for stone disease between January 1, 2013 and March 1, 2015. We compared the rates of spontaneous stone passage between patients who had previously undergone ureteral stent placement and those who had not. In patients with indwelling stents, multivariate logistic regression was performed to identify factors associated with spontaneous… More >

Haidar M. Abdul-Muhsin¹, Nicholas J. Jakob¹, Ryan M. McLemore², Sean B. McAdams¹, Mitchell R. Humphreys¹

Canadian Journal of Urology, Vol.23, No.5, pp. 8465-8470, 2016

Abstract Introduction: To examine the infectious outcomes after the insertion of the temporary prostatic urethral stent (TPUS) in benign prostatic hyperplasia (BPH) patients.
Material and methods: Between November 2007 and September 2012, ninety TPUS were used in 33 patients with BPH at our institution. All patients had negative urine cultures prior to the first stent insertion. TPUS were sent for cultures at time of removal or exchange. Stents were removed at the time of definite surgical intervention, at 4-6 weeks, or when patients elected another course of treatment. Colonization was defined as asymptomatic positive stent culture. Infection was… More >