Karen L. Stern, M.D.

  1. Urologist
  1. Payne NG, Boddu SP, Wymer KM, Heidenberg DJ, Van Der Walt C, Mi L, Keddis M, Stern KL. The Use of Genetic Testing in Nephrolithiasis Evaluation: A Retrospective Review From a Multidisciplinary Kidney Stone Clinic. Urology. 2024 Nov; 193:20-26 Epub 2024 July 22
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  2. Warren CJ, Voleti SS, Stevens V, Brown SJ, Schroeder M, Yee C, Punjani N, Stern K. PubMed-indexed Research Productivity of Urology Applicants and Residents: Does Medical Student Research Productivity Predict Resident Research or Pursuit of an Academic Career? Urology. 2024 Oct 10 [Epub ahead of print]
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  3. Edmonds VS, Wymer KM, Humphreys MR, Stern KL. Trends in Patient Complexity, Practice Setting, and Surgeon Reimbursement for Urolithiasis: Do Rural Urologists Pay the Price? Urology. 2024 Oct; 192:30-35 Epub 2024 July 18
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  4. Bhojani N, Wollin D, El Tayeb MM, Scotland KB, Knoedler J, Stern KL, Nguyen DD, Rivera M, Borofsky MS, Canvasser N, Bechis SK, Hsi RS. Reply: Prospective Multicenter Evaluation of Pain Before and After Removal of Nonobstructing Renal Calculi: A CoRE Initiative. J Urol 2024 Jul; 212 (1):232 Epub 2024 Apr 25
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  5. Heidenberg DJ, Nethery E, Wymer KM, Judge N, Cheney SM, Stern KL, Humphreys MR. Are adverse events during surgery for benign prostatic hyperplasia device related? A review of the MAUDE database. Urologia. 2024 May; 91 (2):249-255 Epub 2024 Mar 23
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  6. Wymer KM, Boddu SP, Choudry M, Narang G, Heidenberg DJ, Payne NG, Girardo M, Humphreys MR, Stern KL. Access to Care and Health Care Utilization Among Patients With Nephrolithiasis. Urology. 2024 May; 187:8-14 Epub 2024 Mar 01
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  7. Bhojani N, Wollin DA, El Tayeb MM, Scotland KB, Knoedler J, Stern KL, Nguyen DD, Rivera M, Borofsky MS, Canvasser N, Bechis SK, Hsi RS. Prospective Multicenter Evaluation of Pain Before and After Removal of Nonobstructing Renal Calculi: A CoRE Initiative. J Urol. 2024 Mar; 211 (3):436-444 Epub 2023 Dec 15
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  8. Bhojani N, Wollin D, El Tayeb MM, Scotland KB, Knoedler J, Stern KL, Nguyen DD, Rivera M, Borofsky MS, Canvasser N, Bechis SK, Hsi RS. Reply by Authors. J Urol. 2024 Mar; 211 (3):444 Epub 2023 Dec 15
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  9. Bhojani N, Wollin D, El Tayeb MM, Scotland KB, Knoedler J, Stern KL, Nguyen DD, Rivera M, Borofsky MS, Canvasser N, Bechis SK, Hsi RS. Reply by Authors. The Journal of Urology. 2024; 211 (3):444
  10. Nguyen MV, Berger JH, Flores AR, Chen TT, Yared J, Pais V, Chew B, Humphreys MR, Stern KL, Sur RL. Case series - Liver injury during percutaneous nephrolithotomy. Can Urol Assoc J. 2023 Sep; 17 (9):E297-E301
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  11. Stern KL, Borgert BJ, Wolf JS Jr. Steerable Ureteroscopic Renal Evacuation (SURE) for Large Renal Stones: A Multi-Institutional Center Study. J Endourol. 2023 Aug 28; 37 (11):1179-83 [Epub ahead of print]
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  12. Gerrity JJ, Berger JH, Hsi RS, Friedlander DF, Stern KL, Chew BH, Nimmagadda N, Kavoussi NL, Chen TT, Krambeck AE, Large T, Bechis SK, Monga M, Miller NL, Lange D, Knudsen B, Sourial MW, Humphreys MR, Shah O, Abbott JE, Abedi G, Sur RL. Quick Sequential Organ Failure Assessment Score Is a Better Predictor of Septic Shock After Percutaneous Nephrolithotomy: A Secondary Analysis of Two Multicenter Prospective Trials. J Endourol. 2023 Aug; 37 (8):863-867
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  13. Stern KL. Percutaneous management of upper tract stones: from mini to maxi percutaneous nephrolithotomy. Curr Opin Urol. 2023 Jul 1; 33 (4):339-344 Epub 2023 Mar 06
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  14. Tzou DT, Tailly TO, Stern KL. Ultrasound-Guided PCNL - Why Are We Still Performing Exclusively Fluoroscopic Access? Curr Urol Rep. 2023 Jul; 24 (7):335-343 Epub 2023 May 06
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  15. Narang G, Stern K. Effect of Cannabidiol Oil on Post-ureteroscopy Pain for Urinary Calculi: A Randomized, Double-blind, Placebo-controlled Trial. Reply. J Urol 2023 Jul; 210 (1):31 Epub 2023 May 02
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  16. Shepard L, Schuler N, Saxton A, Saba P, Cook A, Holler T, Tzou D, Stern K, Chang H, Ahn J, Tailly T, Chi T, Ghazi A. Use of 3D printing and hydrogel molding to develop a model for ultrasound-guided percutaneous nephrolithotomy (PCNL) training and education. Urology Video Journal. 2023; 18:100216.
  17. Wong VKF, Que J, Kong EK, Abedi G, Nimmagadda N, Emmott AS, Paterson RF, Lange D, Lundeen CJ, Nevo A, Shee K, Moore J, Pais V, Sur RL, Bechis SK, Miller NL, Hsi R, Knudsen BE, Sourial M, Humphreys MR, Stern KL, Eisner BH, Chew BH. The Fate of Residual Fragments After Percutaneous Nephrolithotomy: Results from the Endourologic Disease Group for Excellence Research Consortium. J Endourol. 2023 Jun; 37 (6):617-622
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  18. Stern KL, Sur RL, Lim ES, Kong E, Wong KFV, Brar H, Moore J, Berger JH, Bechis SK, Monga M, Sivalingam S, Humphreys MR, Chew BH. Long-term follow-up on dusting versus basketing during ureteroscopy: a prospective multicenter trial from the EDGE Research Consortium. Urolithiasis. 2023 Apr 15; 51 (1):70
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  19. Narang G, Moore J, Wymer K, Chang YH, Lim E, Adeleye O, Humphreys MR, Stern KL. Effect of Cannabidiol Oil on Post-ureteroscopy Pain for Urinary Calculi: A Randomized, Double-blind, Placebo-controlled Trial. J Urol. 2023 Apr; 209 (4):726-733 Epub 2023 Mar 09
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  20. Henderickx MMEL, Hendriks N, Baard J, Wiseman OJ, Scotland KB, Somani BK, Sener TE, Emiliani E, Dragos LB, Villa L, Talso M, Bin Hamri S, Proietti S, Doizi S, Traxer O, Chew BH, Eisner BH, Monga M, Hsi RS, Stern KL, Leavitt DA, Rivera M, Wollin DA, Borofsky M, Canvasser NE, Ingimarsson JP, El Tayeb MM, Bhojani N, Gadzhiev N, Tailly T, Durutovic O, Nagele U, Skolarikos A, Schout BMA, Beerlage HP, Pelger RCM, Kamphuis GM. The Uniform grading tooL for flexIble ureterorenoscoPes (TULIP-tool): a Delphi consensus project on standardised evaluation of flexible ureterorenoscopes. BJU Int. 2023 Apr; 131 (4):494-502 Epub 2022 Oct 26
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  21. Wong VKF, Que J, Kong EK, Abedi G, Nimmagadda N, Emmott AS, Paterson RF, Lange D, Lundeen CJ, Nevo A, Shee K, Moore J, Pais V, Sur RL, Bechis SK, Miller NL, Hsi R, Knudsen BE, Sourial M, Humphreys MR, Stern KL, Eisner BH, Chew BH. The fate of residual fragments after percutaneous nephrolithotomy: results from the endourologic disease group for excellence research consortium. Journal of Endourology. 2023; 37 (6):617-22
  22. Nevo A, Humphreys MR, Callegari M, Keddis M, Moore JP, Salih S, Stern KL. Is medical dissolution treatment for uric acid stones more cost-effective than surgical treatment? A novel, solo practice, retrospective cost-analysis of medical vs. surgical therapy. Can Urol Assoc J. 2023 Jan; 17 (1):E29-E34
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  23. Nevo A, Cheney SM, Callegari M, Moore JP, Stern KL, Zell MA, Abdul-Muhsin H, Humphreys MR. Median lobe vs. complete gland holmium laser enucleation of the prostate: A propensity score matching. Can Urol Assoc J. 2023 Jan; 17 (1):E39-E43
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  24. Tzou DT, Stern KL, Duty BD, Hsi RS, Canvasser NE, De S, Wong AC, Royal CR, Sloss ML, Ziemba JB, Harper JD, Bechis SK, Zampini AM, Borofsky MS, Bell JR, Friedlander JI, Leavitt DA, Nevo A, Patel ND, Patel RM, Okeke Z, Rivera ME, Hsu CH, Chi T, Vedantam G, Lainhart WD. Heterogeneity in stone culture protocols and endourologist practice patterns: a multi-institutional survey. Urolithiasis. 2022 Dec 12; 51 (1):15
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  25. Moore JP, Mauler DJ, Narang GL, Stern KL, Humphreys MR, Keddis MT. Etiology, urine metabolic risk factors, and urine oxalate patterns in patients with significant hyperoxaluria and recurrent nephrolithiasis. Int Urol Nephrol. 2022 Nov; 54 (11):2819-2825 Epub 2022 Aug 02
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  26. Stern KL. Editorial Comment. J Urol 2022 Nov; 208 (5):1082 Epub 2022 Nov 01
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  27. Canvasser NE, Rivera M, Bechis SK, Ingimarsson J, Knoedler J, Stern K, Stoughton CL, Wollin D, Borofsky M, Bhojani N, Tayeb ME, Kamphuis G, Leavitt D, Hsi RS, Scotland KB. Over-the-Counter Alkali Agents to Raise Urine pH and Citrate Excretion: A Prospective Crossover Study in Healthy Adults. Urology. 2022 Oct; 168:72-78 Epub 2022 July 16
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  28. Canvasser NE, Rivera M, Bechis SK, Ingimarsson J, Knoedler J, Stern K, Stoughton CL, Wollin D, Borofsky M, Bhojani N, Tayeb ME, Kamphuis G, Leavitt D, Hsi RS, Scotland KB, Collaborative for Research in Endourology (CoRE).. Author Reply. Urology 2022 Oct; 168:77-78
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  29. Narang G, Wymer K, Mi L, Wolter C, Humphreys M, Stern K. Personality Traits and Burnout: A Survey of Practicing US Urologists. Urology. 2022 Sep; 167:43-48 Epub 2022 Mar 12
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  30. Moore J, Chavez A, Narang G, Bogle J, Stern K. Operating room noise hazards during laser lithotripsy: a comparison between the thulium fiber and holmium laser platforms. World J Urol. 2022 Mar; 40 (3):801-805 Epub 2022 Jan 21
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  31. Moore J, Nevo A, Salih S, Abdul-Muhsin H, Keddis M, Stern K, Humphreys M. Outcomes and rates of dissolution therapy for uric acid stones. J Nephrol. 2022 Mar; 35 (2):665-669 Epub 2021 June 25
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  32. Bolen E, Stern K, Humphreys M, Brady A, Leavitt T, Zhang N, Keddis M. Urine metabolic risk factors and outcomes of patients with kidney transplant nephrolithiasis. Clin Kidney J. 2022 Mar; 15 (3):500-506 Epub 2021 Oct 20
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  33. Large T, Nottingham C, Brinkman E, Agarwal D, Ferrero A, Sourial M, Stern K, Rivera M, Knudsen B, Humphreys MR, Krambeck A. Multi-Institutional Prospective Randomized Control Trial of Novel Intracorporeal Lithotripters: ShockPulse-SE vs Trilogy Trial. J Endourol. 2021 Sep; 35 (9):1326-1332 Epub 2021 Aug 16
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  34. Stern KL. Editorial Comment. J Urol 2021 Aug; 206 (2):372 Epub 2021 May 07
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  35. Vicentini FC, Mazzucchi E, Gokce MI, Sofer M, Tanidir Y, Sener TE, de Souza Melo PA, Eisner B, Batter TH, Chi T, Armas-Phan M, Scoffone CM, Cracco CM, Perez BOM, Angerri O, Emiliani E, Maugeri O, Stern K, Batagello CA, Monga M. Percutaneous Nephrolithotomy in Horseshoe Kidneys: Results of a Multicentric Study. J Endourol. 2021 Jul; 35 (7):979-984 Epub 2020 June 22
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  36. Narang G, Shimon T, Moore J, Hager M, Pinto e Vairo F, Stern K, Keddis M, Humphreys M. Novel Variant in CLDN16: A Further Step in the Diagnosis of Familial Hypomagnesemia with Hypercalciuria and Nephrocalcinosis - A Case Report. Uro 2021. 2021 Jun; 1(3):76-81.
  37. Stern KL. Editorial Comment. J Urol 2021 Jun; 205 (6):1717 Epub 2021 Mar 18
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  38. Nevo A, Stern KL, Moore JP, Humphreys MR, Tyson MD, Keddis MT. The impact of phone counseling on urinary stone prevention. World J Urol. 2021 May; 39 (5):1625-1629 Epub 2020 June 25
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  39. Sur RL, Krambeck AE, Large T, Bechis SK, Friedlander DF, Monga M, Hsi RS, Miller NL, Chew BH, Lange D, Knudsen B, Sourial MW, Humphreys MR, Stern KL, Shah O, Abbott JE, Abedi G. A Randomized Controlled Trial of Preoperative Prophylactic Antibiotics for Percutaneous Nephrolithotomy in Moderate to High Infectious Risk Population: A Report from the EDGE Consortium. J Urol. 2021 May; 205 (5):1379-1386 Epub 2020 Dec 28
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  40. Nevo A, Faraj KS, Cheney SM, Moore JP, Stern KL, Borofsky M, Gnessin E, Humphreys MR. Holmium laser enucleation of the prostate using Moses 2.0 vs non-Moses: a randomised controlled trial. BJU Int. 2021 May; 127 (5):553-559 Epub 2020 Nov 01
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  41. Cone EB, Westerman ME, Nguyen DD, Stern KL, Javier-Desloges J, Koo K. Gender-based Differences in Career Plans, Salary Expectations, and Business Preparedness Among Urology Residents. Urology. 2021 Apr; 150:65-71 Epub 2020 June 12
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  42. Kottooran C, Sternberg K, Stern KL, Pais VM Jr, Eisner BH. Opioids and Kidney Stones. Semin Nephrol. 2021 Jan; 41 (1):19-23
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  43. Nevo A, Moore JP, Humphreys MR, Salih S, Keddis MA, Rose KM, Cheney SS, Stern KL. Does bladder stone composition predict kidney stone composition? Can J Urol. 2020 Dec; 27 (6):10450-10455
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  44. Nevo A, Muchtar E, Stern KL, Moore JP, Cheney SM, Humphreys MR, Grogan M, Stanton ML. The Clinical Implication of Incidental Prostatic Amyloidosis. Urology. 2020 Nov; 145:253-257 Epub 2020 Sept 19
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  45. Stern KL, Canvasser N, Borofsky M, Gleason VM, Kamphuis G, El Tayeb MM, Hsi R, Scotland KB. Alkalinizing Agents: A Review of Prescription, Over-the-Counter, and Medical Food Supplements. J Endourol. 2020 Jan; 34 (1):1-6 Epub 2019 Sept 25
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  46. Fedrigon D, Bretschneider CE, Muncey W, Stern K. Removal of Large Primary Vaginal Calculus Using the Nephroscope and Endoscopic Ultrasonic Lithotrite: A Case Report. J Endourol Case Rep. 2020; 6 (2):92-95 Epub 2020 June 04
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  47. Patel M, Nevo A, Stern KL. Retained Foreign Body Presenting as Pouch Stone After Continent Urinary Diversion. J Endourol Case Rep. 2020; 6 (4):465-467 Epub 2020 Dec 29
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  48. Stern KL, Gao T, Antonelli JA, Viprakasit DP, Averch TD, Chi T, Chew BH, Bird VG, Pais VM Jr, Streeper NM, Sur RL, Nakada SY, Penniston KL, Sivalingam S. Association of Patient Age and Gender with Kidney Stone Related Quality of Life. J Urol. 2019 Aug; 202 (2):309-313 Epub 2019 July 08
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  49. Yaghoubian A, Batter T, Mozafarpour S, Sacco D, Chew BH, Monga M, Krambeck A, Sur R, Knudsen B, Mikkilineni N, Shah O, Stern K, De S, Miller N, Broutian T, Sourial M, Large T, Scotland K, Lundeen C, Lange D, DiPina T, Bechis SK, Eisner BH, Edge Research Consortium. Use of the Quick Sequential Organ Failure Assessment Score for Prediction of Intensive Care Unit Admission Due to Septic Shock after Percutaneous Nephrolithotomy: A Multicenter Study. J Urol. 2019 Aug; 202 (2):314-318 Epub 2019 July 08
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  50. Stern KL, Ward RD, Li J, Remer EM, Stoller ML, Monga M. Nonrenal Systemic Arterial Calcification Predicts the Formation of Kidney Stones. J Endourol. 2019 Jul 25 Epub 2019 July 25
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  51. Stern KL, Loftus CJ, Doizi S, Traxer O, Monga M. A Prospective Study Analyzing the Association Between High-grade Ureteral Access Sheath Injuries and the Formation of Ureteral Strictures. Urology. 2019 Jun; 128:38-41 Epub 2019 Mar 14
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  52. Stern KL, Fedrigon Iii D, Loftus CJ, Monga M. The safety wire with a ureteral access sheath - does it hurt more than it helps? Can J Urol. 2019 Apr; 26 (2):9733-9735
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  53. Stern K, Monga M. Laser papillotomy for chronic flank pain: A reassessment of efficacy in the era of automated opioid prescription monitoring. Urology Practice. 2019 Jan; 6(1):1-5.
  54. Reinstatler L, Stern K, Batter H, Scotland KB, Ardekani GS, Rivera M, Chew BH, Eisner B, Krambeck AE, Monga M, Pais VM Jr. Conversion from Cystine to Noncystine Stones: Incidence and Associated Factors. J Urol. 2018 Dec; 200 (6):1285-1289 Epub 2018 July 27
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  55. Stern KL, Monga M. The Moses holmium system - time is money. Can J Urol. 2018 Jun; 25 (3):9313-9316
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  56. Stern KL, McAdams SB, Cha SS, Abdul-Muhsin HM, Humphreys MR. A New Laser Platform for Holmium Laser Enucleation of the Prostate: Does the Lumenis Pulse 120H Laser Platform Improve Enucleation Efficiency? Urology. 2017 Apr; 102:198-201 Epub 2016 Dec 23
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  57. Abdul-Muhsin HM, Stern KL, Katariya NN, Castle EP. Robot assisted "en bloc" radical nephrectomy, splenectomy and distal pancreatectomy for renal cell carcinoma: case report and illustration of technique. J Robot Surg. 2016 Dec; 10 (4):375-378 Epub 2016 July 22
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  58. Abdul-Muhsin HM, Tyson MD, Stern KL, Nunez-Nateras RA, Humphreys MR. The impact of training on the perioperative and intermediate functional outcomes after holmium laser enucleation of the prostate. Can J Urol. 2016 Dec; 23 (6):8557-8563
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  59. Stern KL, Humphreys MR. Hyperbaric oxygen for refractory dystrophic calcifications of the prostate: A case series and review of the literature. J Urol Res. 2016 Jun; 3(4):1058.
  60. Stern KL, Tyson MD, Abdul-Muhsin HM, Humphreys MR. Contemporary Trends in Percutaneous Nephrolithotomy in the United States: 1998-2011. Urology. 2016 May; 91:41-5.
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  61. Tarplin S, Monga M, Stern KL, McCauley LR, Sarkissian C, Nguyen MM. Predictors of Reporting Success With Increased Fluid Intake Among Kidney Stone Patients. Urology. 2016 Feb; 88:49-56.
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  62. Stern K, et al. Recent Advances and Emerging Technology in the Surgical Management of BPH-Related Voiding Dysfunction. Current Bladder Dysfunction Reports. 2014.
  63. McCauley LR, Dyer AJ, Stern K, Hicks T, Nguyen MM. Factors influencing fluid intake behavior among kidney stone formers. J Urol. 2012 Apr; 187(4):1282-6. Epub 2012 Feb 15.
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  64. Nasser FS, Ritsema DF, Cheney S, Stern K, Sokoloff MH, Hu CC, Nguyen MM. Reviewing radiographic images with patients: results of a trial on patient preferences, understanding, and satisfaction. J Endourol. 2010 Dec; 24(12):2083-91. Epub 2010 Oct 08.
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  65. Rieder J, Brusky J, Tran V, Stern K, Aboseif S. Review of intentionally self-inflicted, accidental and iatrogetic foreign objects in the genitourinary tract. Urol Int. 2010; 84(4):471-5. Epub 2010 Mar 12.
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  66. Reider J, Tran V, Stern K, Chopra A, Aboseif S. Compliance with Overactive Bladder Medications in a Managed Healthcare Organization. J Urol. 2008 Sep; 179(4):142.