Xiaorui Zhang^1,2,*, Tong Xu¹, Wei Sun², Jiali Duan¹, Sunil Kumar Jha³

CMC-Computers, Materials & Continua, Vol.69, No.1, pp. 727-745, 2021, DOI:10.32604/cmc.2021.018182 - 04 June 2021

Abstract In the simulation of acupuncture manipulation, it is necessary to accurately capture the information of acupuncture points and particles around them. Therefore, a soft tissue modeling method that can accurately track model particles is needed. In this paper, a soft tissue acupuncture model based on the mass-spring force net is designed. MSM is used as the auxiliary model and the SHF model is combined. SHF is used to establish a three-layer soft tissue model of skin, fat, and muscle, and a layer of the MSM based force network is covered on the surface of soft More >

Hao Hong¹, Nianguo Dong^1,*, Mingxing Xie², Lin Li², Si Chen¹, Wengang Sun³, Xiaoqing Hu²

Congenital Heart Disease, Vol.16, No.5, pp. 513-518, 2021, DOI:10.32604/CHD.2021.015749 - 03 June 2021

Abstract Pentalogy of Cantrell is a rare congenital abnormality. Even with high-quality medical care and staged corrective surgeries in professional hospitals, the mortality rate is still very high and long-term prognosis is poor. Survival is largely determined by the complexity and severity of cardiac abnormalities, the efficiency of abdominal wall closure and postoperative complications. A 24-year-old male patient with complete pentalogy of Cantrell was diagnosed. One-stage surgical repair of all abnormalities were completed. The patient recovered well and had been follow-up for 7 years. He has a good cosmetic outcome, with no signs of cardiac dysfunction. More >

Xiaorui Zhang^1,2,*, Jiali Duan¹, Wei Sun², Tong Xu¹, Sunil Kumar Jha³

CMES-Computer Modeling in Engineering & Sciences, Vol.127, No.1, pp. 117-133, 2021, DOI:10.32604/cmes.2021.012034 - 30 March 2021

Abstract The cutting simulation of soft tissue is important in virtual surgery. It includes three major challenges in computation: Soft tissue simulation, collision detection, and handling, as well as soft tissue models. In order to address the earlier challenges, we propose a virtual cutting system based on the mass-spring model. In this system, MSM is utilized to simulate the soft tissue model. Residual stress is introduced to the model for simulating the shrinking effect of soft tissue in cutting. Second, a cylinder-based collision detection method is used to supervise the collision between surgical tools and soft More >

Francesco Bertelli¹, Claudia Cattapan¹, Alvise Guariento², Vladimiro L. Vida^1,*

Congenital Heart Disease, Vol.16, No.1, pp. 39-43, 2021, DOI:10.32604/CHD.2021.013256 - 23 December 2020

Abstract We report the case of three female patients who were scheduled for surgical correction of residual left-to-right shunt after initial repair of sinus venosus atrial septal defect (SV-ASD) during childhood. After excluding the possibility of an hemodynamic intervention, all three patients underwent a successful surgical closure through a right mini sub-axillary approach by using total peripheral cannulation for cardiopulmonary bypass and leaving the inferior vena cava completely un-snared allowing for an optimal visualization of the residual atrial septal communication and avoiding extensive dissection of mediastinal structures. More >

Claudia Herbst^1,*, Haibo Zhang², Renjie Hu², Jürgen Hörer³, Masamichi Ono³, Vladimiro Vida⁴, Tjark Ebels^5,6, Andrzej Kansy⁷, Jeffrey P. Jacobs⁸, Zdzislaw Tobota⁷, Bohdan Maruszewski⁷

Congenital Heart Disease, Vol.16, No.1, pp. 17-25, 2021, DOI:10.32604/CHD.2021.012982 - 23 December 2020

Abstract Background: The European Congenital Heart Surgeons Association (ECHSA) Congenital Heart Surgery Database (CHSD) was founded in 1999 and is open for worldwide participation. The current dataset includes a large amount of surgical data from both Europe and China. The purpose of this analysis is to compare patterns of practice and outcomes among pediatric congenital heart defect surgeries in Europe and China using the ECHSA-CHSD. Methods: We examined all European (125 centers, 58,261 operations) and Chinese (13 centers, 23,920 operations) data in the ECHSA-CHSD from 2006-2018. Operative mortality, postoperative length of stay, median patient age and weight… More >

Charles C. Peyton¹, Ali Hajiran¹, Kevin Morgan², Mounsif Azizi¹, Dominic Tang¹, Juan Chipollini¹, Scott M. Gilbert¹, Michael Poch¹, Wade J. Sexton¹, Philippe E. Spiess¹

Canadian Journal of Urology, Vol.27, No.1, pp. 10118-10124, 2020

Abstract Introduction: To describe the incidence, contemporary management, risk factors and outcomes of urinary leak following open and robotic partial nephrectomy at a tertiary care, comprehensive cancer center.
Materials and methods: We reviewed 975 patients who underwent partial nephrectomy at Moffitt Cancer Center from January 2009 to May 2017. Patient demographic, perioperative and follow-up data were recorded and compared, stratified for postoperative urine leak. Fisher’s exact and Wilcoxon sum-rank testing were performed for categorical and continuous variables as indicated.
Results: Twenty-three of 975 (2.3%) patients experienced a urine leak after partial nephrectomy. Median nephrometry score for urine leak patients… More >

Mihir Desai¹, Mo Bidair², Naeem Bhojani³, Andrew Trainer⁴, Andrew Arther⁴, Eugene Kramolowsky⁵, Leo Doumanian¹, Dean Elterman⁶, Ronald P. Kaufman, Jr.⁷, James Lingeman⁸, Amy Krambeck⁸, Gregg Eure⁹, Gopal Badlani¹⁰, Mark Plante¹¹, Edward Uchio¹², Greg Gin¹², Larry Goldenberg¹³, Ryan Paterson¹³, Alan So¹³, Mitchell R. Humphreys¹⁴, Claus G. Roehrborn¹⁵, Steven Kaplan¹⁶, Jay Motola¹⁶, Kevin C. Zorn³

Canadian Journal of Urology, Vol.27, No.2, pp. 10147-10153, 2020

Abstract Introduction: To report 2-year safety and effectiveness of the Aquablation procedure for the treatment of men with symptomatic benign prostatic hyperplasia (BPH) and large-volume 80-150 cc prostates.
Materials and methods: Between September-December 2017, 101 men with moderate-to-severe BPH symptoms and prostate volumes of 80-150 cc underwent an ultrasound-guided robotically executed Aquablation procedure in a prospective multicenter international clinical trial (WATER II). Baseline, procedural and follow-up parameters were recorded at baseline and scheduled postoperative visits. Herein we report 2-year safety and efficacy for this cohort.
Results: Mean prostate volume was 107 cc (range 80-150 cc). Mean IPSS improved from… More >

Thenappan Chandrasekar^1,*, Lydia Glick², Daniella Wong², Timothy M. Han², Joon Yau Leong², Misung Yi³, James R. Mark¹, Mark J. Mann¹, Edouard J. Trabulsi¹, Costas D. Lallas¹

Canadian Journal of Urology, Vol.27, No.3, pp. 10250-10256, 2020

Abstract Introduction: To evaluate the impact of an “opt-in” non-narcotic postoperative pain regimen on narcotic utilization and patient-reported pain scores.
Materials and methods: A prospective, non-blinded pre- and post-interventional trial was conducted, including a lead-in period for baseline evaluation. The intervention group received a new pain protocol prioritizing non-narcotic medications, an “opt-in” requirement for opiates, and standardized patient education. Study outcomes included opiate prescription and utilization (measured in Morphine Equivalent Doses) and reported pain scores on postoperative day (POD) 1, discharge, and follow-up.
Results: At discharge, 70% fewer patients were prescribed any opioids (ARR: -0.7; p < 0.001); the… More >

Vipin Tyagi¹, Ajay Kumar Sharma², Mahendra Bhandari³

Canadian Journal of Urology, Vol.27, No.3, pp. 10205-10212, 2020

Abstract Introduction: The novel coronavirus disease 2019 (COVID-19) pandemic has afflicted > 3.3 million people around the world since December 2019. Though more than 1000 publications have appeared in scientific journals addressing a plethora of questions, there is a considerable hiatus in understanding the behavior and natural history of the virus and its impact on urology. Also, a modified approach is the need of the hour in taking care of patients, as urologists should safeguard their teams, families, and patients.
Material and methods: The authors have used guidelines from the USA, Canada, UK, Europe, and India for making… More >

Patrick J. Hensley, Amanda F. Saltzman, Ali M. Ziada

Canadian Journal of Urology, Vol.27, No.4, pp. 10329-10335, 2020

Abstract Introduction: Management of pediatric renal masses has lagged behind adult paradigms adopting minimally invasive surgery (MIS) and nephron-sparing surgery (NSS). This study investigated national practice patterns between pediatric urologists (PU) and pediatric surgeons (PS) in pediatric renal malignancy.
Materials and methods: The Pediatric National Surgical Quality Improvement Program database was queried for CPT codes for radical/partial nephrectomy from 2012-2017 performed for renal malignancy. Patients were grouped by specialty and operative approach.
Results: PU managed 175 (17%) patients while PS managed 811 (77%). PU were more likely to use MIS (14% versus 5%, p < 0.001) and NSS (33%… More >