Kelven Weijing Chen

ORCID: 0000-0002-0940-1439
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About
Contact & Profiles
Research Areas
  • Kidney Stones and Urolithiasis Treatments
  • Pediatric Urology and Nephrology Studies
  • Urinary Bladder and Prostate Research
  • Ureteral procedures and complications
  • Pelvic floor disorders treatments
  • Urological Disorders and Treatments
  • Prostate Cancer Diagnosis and Treatment
  • Abdominal Surgery and Complications
  • Diversity and Career in Medicine
  • Thermoregulation and physiological responses
  • Tryptophan and brain disorders
  • COVID-19 and healthcare impacts
  • Complementary and Alternative Medicine Studies
  • Music Therapy and Health
  • Hemodynamic Monitoring and Therapy
  • Trauma and Emergency Care Studies
  • Olfactory and Sensory Function Studies
  • Histiocytic Disorders and Treatments
  • Bladder and Urothelial Cancer Treatments
  • Gut microbiota and health
  • IgG4-Related and Inflammatory Diseases
  • Non-Invasive Vital Sign Monitoring
  • Urologic and reproductive health conditions

National University Hospital
2019-2025

Université de Montréal
2025

National University Health System
2015-2023

Retrograde intrarenal surgery (RIRS) is the main treatments for upper urinary tract stones. The Ureteral Access Sheath (UAS) serves as a supplementary tool, facilitating direct kidney access during RIRS. High quality of evidence comparing tip bendable suction ureteral sheath (S-UAS) with traditional UAS in RIRS treatment renal and stones lacking. purpose study to compare efficacy safety S-UAS or ≤30 mm.

10.1016/j.eclinm.2024.102724 article EN cc-by-nc-nd EClinicalMedicine 2024-07-05

To investigate plasma and urinary kynurenine (KYN)-tryptophan (TRP) ratios in bladder cancer, expression of indoleamine 2,3-dioxygenase 1 (IDO1) relation to tryptophan (TDO2) tumour, the correlation KYN-TRP ratio with tumour burden.Metabotyping TRP-KYN metabolic axis was performed via a clinical case-control study. Expression IDO1 TDO2 measured human biopsied tissues. Correlational experiments between were using murine orthotopic prostate-specific antigen (PSA)-secreting MB49 cancer model.We...

10.1111/bju.15205 article EN BJU International 2020-08-14

Introduction To compare the clinical outcomes and complication rates of Convective Water Vapour Energy Ablation (Rezum®) Prostatic Urethral Lift (Urolift®). identify predictive factors for treatment failures in both treatments. Materials & Methods Prospective clinico-epidemiological data patients who underwent Urolift® or Rezum® a single institution Benign Hyperplasia (BPH) was collected. The choice intervention depended on preference after patient-centric discussions. Results From October...

10.1089/end.2024.0400 article EN Journal of Endourology 2024-09-20

To compare and review the outcomes of transperineal (TP) prostate biopsies with transrectal (TR) performed under local anaesthesia (LA). A relevant published literature is presented.We prospectively analysed 212 consecutive patients who underwent TP biopsy using PrecisionPoint™ access system LA, at our institution from October 2018 to March 2020. We compared morbidity cancer detection rates this approach historical cohort 178 TR method LA.The mean age group was 69 years, median specific...

10.1002/bco2.112 article EN cc-by BJUI Compass 2021-10-09

Purpose: Transurethral needle ablation (TUNA) is a minimally invasive procedure for the treatment of symptomatic benign prostatic hyperplasia (BPH).Compared to transurethral resection prostate (TURP), office-based TUNA an attractive alternative as it and avoids general anaesthesia.The aim this study evaluate efficacy single session officebased TUNA.Materials Methods: Data 121 patients who had undergone was retrieved from June 2008 March 2017.Patients were followed-up with visits at 1, 3, 6,...

10.4111/icu.2019.60.5.351 article EN cc-by-nc Investigative and Clinical Urology 2019-01-01

To identify predictive factors for the development of sepsis/septic shock postdecompression calculi-related ureteric obstruction using Sequential Organ Failure Assessment (SOFA) score and to compare clinical outcomes odd risk ratios patients developing following insertion percutaneous nephrostomy (PCN) versus retrograde ureteral stenting (RUS).Clinico-epidemiological data who underwent PCN and/or RUS in two institutions were retrospectively collected from January 2014 December 2020.537 (244...

10.1111/iju.15023 article EN International Journal of Urology 2022-09-07

Embryonal rhabdomyosarcoma (ERMS) of the adult urinary bladder is a rare malignant tumour. Inflammatory myofibroblastic tumour (IMT) benign genitourinary that may appear variable histologically but usually lacks unequivocal traits. Techniques like flow cytometry and immunohistochemistry be used to differentiate these two tumours. Our patient, 46-year-old male, had rapidly recurring lower tract symptoms after transurethral resections prostate. He subsequently underwent transvesical...

10.1155/2015/510508 article EN cc-by Case Reports in Surgery 2015-01-01

<title>Abstract</title> Purpose To report on in-vivo intrarenal pressure (IRP) during flexible ureteroscopy for treatment of kidney stones while using the novel bendable suction ureteral access sheath. Methods A retrospective observational analysis was performed 25 patients undergoing routine renal between February 2024 and June from two centres in Canada. The LithoVue Elite<italic>™</italic> ureteroscope (Boston Scientific Corp., Marlborough, MA, USA) with sensing capability used together...

10.21203/rs.3.rs-5314649/v1 preprint EN cc-by Research Square (Research Square) 2024-11-11

Conventional continuous bladder irrigation (CBI) systems used in Urology have been labor-intensive and challenging for healthcare workers to manage consistently due inter-observer variability interpreting the blood concentration drainage fluid. The team has come up with a feedback system control saline flow-rate. It consists of sensor probe that measures fluid by measuring light intensity absorbed samples. other component is gripper adjusts flow-rate based on detected. Results shown...

10.3390/mti4030059 article EN cc-by Multimodal Technologies and Interaction 2020-08-23
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