About

Fuad F. Elkhoury, MD, is an Assistant Clinical Professor of Urology at UCLA. He completed his urology residency at the UCLA Department of Urology and further specialized with a fellowship in endourology and robotic surgery at UCLA. Dr. Elkhoury is an expert in the surgical management of benign prostatic hyperplasia (BPH) for men suffering from lower urinary tract symptoms and is particularly skilled in Holmium Laser Enucleation of the Prostate (HoLEP). He also specializes in the surgical and medical management of kidney stones and is recognized as a leading kidney stone surgeon in Southern California. His clinical interests include optimizing surgical outcomes in men with BPH and kidney stones, as well as developing novel minimally invasive approaches to treat urologic conditions. Dr. Elkhoury cares for patients with a broad spectrum of urologic conditions and performs the full range of urologic procedures.

Research topics

• Medicine
• Surgery
• General surgery
• Medical physics
• Pathology
• Nuclear medicine
• Oncology
• Urology
• Internal medicine

Selected publications

• Scrotal Pain

  2026-01-01

  book-chapter
  PublisherDOI

• Blood in Urine

  2026-01-01

  book-chapter
  PublisherDOI

• Scrotal Mass

  2026-01-01

  book-chapter
  PublisherDOI

• Robotic-Assisted Electromagnetic Guidance Improves Success of Percutaneous Access for Nephrolithotomy: A Study of Novices and Experts

  Journal of Endourology · 2025-08-01 · 1 citations

  article

  Introduction: Percutaneous nephrolithotomy (PCNL) has been a mainstay treatment for large stone burdens since the 1980s, historically offering improved stone-free rates over retrograde intrarenal surgery (RIRS). Gaining optimal access into the renal collecting system can be challenging, requiring advanced skills or interventional radiology assistance. The learning curve for fluoroscopic and ultrasonography access can be steep, with only a minority of PCNL access performed by urologists in the United States. This study compares robotic-assisted electromagnetic (EM) guidance to traditional fluoroscopy for obtaining percutaneous renal access between cohorts of novice and expert urologists. Methods: Ten novices and five expert urologists used robotic-assisted EM guidance to obtain access in a modified supine position compared with using fluoroscopy in a traditional prone position in human cadavers. Primary success was defined as papillary access. Performance metrics, including number of puncture attempts, time to access, radiation exposure, and participant confidence, were compared between novices and experts. Results: Robotic-assisted EM guidance improved success rates for both novices (100% vs 70%) and experts (93% vs 87%) compared with fluoroscopy. Novices showed greater accuracy using robotic assistance (97% vs 37%). The number of insertion attempts decreased with robotic guidance for both groups (novices: 3.42 ± 0.44 vs 1.47 ± 0.19; experts: 2.13 ± 0.36 vs 1.40 ± 0.24; p < 0.002). EM guidance ( p < 0.05) and experience ( p < 0.05) significantly reduced the time from needle insertion to access (novices: 12.86 ± 2.41 minutes vs 4.49 ± 0.96 minutes; experts: 4.90 ± 1.40 minutes vs 4.09 ± 1.12 minutes). Radiation exposure was notably lower with EM guidance (novices, 1.12 ± 0.17 mGy vs 4.86 ± 0.70 mGy; experts, 0.69 ± 0.12 mGy vs 4.11 ± 1.21 mGy; p < 0.001). Novices felt more confident (5[3–5] vs 2[1–4], p < 0.001) and at ease (5[3–5] vs 2.75[1–3], p < 0.001) with EM guidance. Conclusion: Robotic-assisted EM guidance improves percutaneous access success, reduces attempts and radiation exposure, and enhances novice confidence and accuracy. This technology could enable urologists to more effectively and safely perform PCNL, especially for less experienced practitioners.

  PublisherDOI

• MP33-09 OPTIMIZING IMPLEMENTATION OF AN ONLINE SHARED DECISION-MAKING INTERVENTION IN MANAGEMENT OF NEPHROLITHIASIS

  The Journal of Urology · 2025-04-08

  article
  PublisherDOI

• Editorial Comment on “Variation in Urology Care After Urinary Stone Surgery Among Veterans at High-risk for Recurrence”

  Urology · 2024-11-01

  editorial1st authorCorresponding
  PublisherDOI

• MP14-18 ROBOTIC-ASSISTED ELECTROMAGNETIC GUIDANCE IMPROVES SUCCESS IN GAINING PERCUTANEOUS ACCESS FOR NEPHROLITHOTOMY BY NOVICES

  The Journal of Urology · 2022-04-07 · 1 citations

  article

  You have accessJournal of UrologyCME1 May 2022MP14-18 ROBOTIC-ASSISTED ELECTROMAGNETIC GUIDANCE IMPROVES SUCCESS IN GAINING PERCUTANEOUS ACCESS FOR NEPHROLITHOTOMY BY NOVICES Mitchell Humphreys, Kevin Wymer, Ben Chew, Janet Zhen, Fuad Elkhoury, Sri Sivalingam, Matthew Dunn, and Michael Borofsky Mitchell HumphreysMitchell Humphreys More articles by this author , Kevin WymerKevin Wymer More articles by this author , Ben ChewBen Chew More articles by this author , Janet ZhenJanet Zhen More articles by this author , Fuad ElkhouryFuad Elkhoury More articles by this author , Sri SivalingamSri Sivalingam More articles by this author , Matthew DunnMatthew Dunn More articles by this author , and Michael BorofskyMichael Borofsky More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000002543.18AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Percutaneous nephrolithotomy (PCNL) offers advantages over retrograde intrarenal surgery for large stone burdens. However, gaining optimal access into the renal collecting system can be challenging and requires advanced training. A minority of PCNL access is currently performed by urologists in the USA. In this study, we evaluate the success of gaining percutaneous renal access in a cadaveric model when using a novel robotic-assisted electromagnetic (EM) guidance platform, compared to fluoroscopic guidance, among individuals that do not regularly perform their own PCNL access. METHODS: Seven novices (individuals who use IR for access, or gain percutaneous access <24 times/year, or have gained access <30 times after training) were asked to use robotic-assisted EM guidance provided by the Monarch® Platform, Urology (Auris Health, Inc., Redwood City, CA) to obtain upper pole, mid-kidney, and lower pole access in a modified-supine position vs. the same tasks in a prone position using fluoroscopy in a cadaveric model. The number of puncture attempts, accuracy (papilla/fornix, infundibulum, or miss), and time to achieve access was compared. Participants were also surveyed on their confidence in gaining access (Likert scale 1-5, 5 as the best score). Statistical comparisons were made using paired t-tests. RESULTS: Novices had increased overall success in gaining percutaneous access using robot-assisted EM navigation compared to fluoroscopy-guided (100% vs. 57%), with greater accuracy (papillary or forniceal) (100% vs. 29%) (Figure 1). Robotic-assisted EM guidance decreased the average number of insertion attempts per calyx (1.24±0.10 vs. 2.98±0.65, p<0.05), and also the time to achieve access (6.92±0.66 min vs. 16.90±3.21 min, p<0.05). Lastly, novices expressed a greater sense of ease [5(3.3-5) vs. 2.5(1-3)] and confidence [5(3.3-5) vs. 2(1-3)] in gaining access using EM- vs. fluoroscopy-guided navigation. CONCLUSIONS: Percutaneous access using robotic-assisted EM-guidance provided by the Monarch® Platform improved access success, time, accuracy, and confidence among study participants. These initial data suggest this novel enabling technology can benefit urologists to routinely gain their own access for PCNL. Source of Funding: Johnson & Johnson © 2022 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 207Issue Supplement 5May 2022Page: e239 Advertisement Copyright & Permissions© 2022 by American Urological Association Education and Research, Inc.MetricsAuthor Information Mitchell Humphreys More articles by this author Kevin Wymer More articles by this author Ben Chew More articles by this author Janet Zhen More articles by this author Fuad Elkhoury More articles by this author Sri Sivalingam More articles by this author Matthew Dunn More articles by this author Michael Borofsky More articles by this author Expand All Advertisement PDF DownloadLoading ...

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• MP41-02 NOVEL ROBOTIC-ASSISTED ELECTROMAGNETIC GUIDANCE FOR PRECISION PERCUTANEOUS ACCESS: A CADAVERIC STUDY OF NOVICES VERSUS AN EXPERT

  The Journal of Urology · 2022-04-07

  article

  You have accessJournal of UrologyCME1 May 2022MP41-02 NOVEL ROBOTIC-ASSISTED ELECTROMAGNETIC GUIDANCE FOR PRECISION PERCUTANEOUS ACCESS: A CADAVERIC STUDY OF NOVICES VERSUS AN EXPERT Mitchell Humphreys, Kevin Wymer, Ben Chew, Janet Zhen, Fuad Elkhoury, Sri Sivalingam, Matthew Dunn, and Michael Borofsky Mitchell HumphreysMitchell Humphreys More articles by this author , Kevin WymerKevin Wymer More articles by this author , Ben ChewBen Chew More articles by this author , Janet ZhenJanet Zhen More articles by this author , Fuad ElkhouryFuad Elkhoury More articles by this author , Sri SivalingamSri Sivalingam More articles by this author , Matthew DunnMatthew Dunn More articles by this author , and Michael BorofskyMichael Borofsky More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000002607.02AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: A precise puncture into the exact location in the renal collecting system is an essential skill for successful percutaneous nephrolithotomy (PCNL). The consequences of a suboptimal puncture and tract dilation can result in bleeding or the inability to treat stone burden efficiently or completely. This proficiency is developed over time and can be challenge for novices. The purpose of this study was to determine if a novel technology, robotic-assisted electromagnetic (EM) guidance, can impact the success of percutaneous renal access in a cadaveric model. METHODS: Seven novices (individuals who use IR for access, or gain percutaneous access <24 times/year, or have gained access <30 times after training) used robotic-assisted EM guidance provided by the Monarch® Platform, Urology (Auris Health, Inc., Redwood City, CA) to obtain upper pole, mid kidney, and lower pole access in the supine position vs. the same tasks in a prone position using fluoroscopy in a cadaveric model. Measured variables were time to access, number of needle passes, fluoroscopy time and dosage, and the accuracy of access (location of the puncture). The novices were benchmarked against an expert (>100 lifetime PCNLs including access) to contextualize the influence of the technology. Statistical comparisons were made using paired t-tests. RESULTS: Successful access by the novices and expert was achieved in 100% of cases using robot-assisted EM guidance in supine position, but only in 57% and 100% of cases, respectively, when using fluoroscopy in the prone position (Table 1). Time to access using fluoroscopy was 16.9 min vs 6.9 min (p <0.05) using EM guidance for the novices, compared to <4 min with both methods by the expert. Mean number of needle insertions for the novices was 1.2 vs 3.0 (p <0.05) with EM and fluoroscopy methods, and 1.0 vs 1.7 for the expert, respectively. CONCLUSIONS: Robotic-assisted EM-guidance in the supine position offered a significant advantage to novices. It facilitated quicker and more accurate access to the renal collecting system with fewer attempts. These initial data suggest a potential to democratize the skill of gaining percutaneous access. Additional validation is needed to confirm the value of this tool to the surgeon’s armamentarium. Source of Funding: Johnson & Johnson © 2022 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 207Issue Supplement 5May 2022Page: e718 Advertisement Copyright & Permissions© 2022 by American Urological Association Education and Research, Inc.MetricsAuthor Information Mitchell Humphreys More articles by this author Kevin Wymer More articles by this author Ben Chew More articles by this author Janet Zhen More articles by this author Fuad Elkhoury More articles by this author Sri Sivalingam More articles by this author Matthew Dunn More articles by this author Michael Borofsky More articles by this author Expand All Advertisement PDF DownloadLoading ...

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• PD40-12 ROBOTIC-ASSISTED ELECTROMAGNETIC GUIDANCE MINIMIZES RADIATION EXPOSURE IN GAINING PERCUTANEOUS ACCESS FOR NEPHROLITHOTOMY: A CADAVERIC STUDY WITH NOVICES

  The Journal of Urology · 2022 · 3 citations

  • Medicine
  • Surgery
  • Medical physics

  You have accessJournal of UrologyCME1 May 2022PD40-12 ROBOTIC-ASSISTED ELECTROMAGNETIC GUIDANCE MINIMIZES RADIATION EXPOSURE IN GAINING PERCUTANEOUS ACCESS FOR NEPHROLITHOTOMY: A CADAVERIC STUDY WITH NOVICES Mitchell Humphreys, Kevin Wymer, Ben Chew, Janet Zhen, Fuad Elkhoury, Sri Sivalingam, Matthew Dunn, and Michael Borofsky Mitchell HumphreysMitchell Humphreys More articles by this author , Kevin WymerKevin Wymer More articles by this author , Ben ChewBen Chew More articles by this author , Janet ZhenJanet Zhen More articles by this author , Fuad ElkhouryFuad Elkhoury More articles by this author , Sri SivalingamSri Sivalingam More articles by this author , Matthew DunnMatthew Dunn More articles by this author , and Michael BorofskyMichael Borofsky More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000002601.12AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Fluoroscopy plays a big role in endourologic stone procedures and intra-operative radiation exposure poses risks to the patient, surgeon, and staff. Fluoroscopic guidance is the most utilized imaging modality for obtaining access for percutaneous nephrolithotomy (PCNL). Radiation usage may also be higher by urologists who are less experienced. In this study, radiation use is compared while gaining percutaneous access in a cadaveric model, using either fluoroscopy or a novel robotic-assisted electromagnetic (EM) method in a cohort of novice urologist. METHODS: Seven novices (individuals who use IR for access, or gain percutaneous access <24 times/year, or have gained access <30 times after training) used robotic-assisted EM-guidance provided by the Monarch® Platform, Urology (Auris Health, Inc., Redwood City, CA) to obtain upper pole, mid kidney, and lower pole access in a modified supine position vs. the same tasks in a prone position using fluoroscopy in a human cadaver. Total radiation time and dosage, defined as from pyelogram to wire insertion, and access radiation time and dosage, defined as from needle insertion to wire insertion, were measured. Statistical comparisons were made using paired t-tests. RESULTS: Robot-assisted EM-guidance decreased total radiation time (0.11±0.01 min vs. 1.30±0.33 min, mean ±SEM, p<0.05) and total radiation dosage (1.00±0.15 mGy vs. 5.43±0.88 mGy, p<0.01), compared to fluoroscopy-guided navigation (Figure 1). Additionally, robotic-assisted EM-guidance reduced access radiation time (0.08±0.05 min vs. 1.08±0.24 min, p<0.01) and access radiation dosage (0.25±0.11 mGy vs. 4.25±0.86 mGy, p<0.01) compared to fluoroscopic-guidance. CONCLUSIONS: Robotic-assisted EM-guidance provided by the Monarch® Platform robotic system decreased radiation exposure when compared to fluoroscopic-guidance during percutaneous access in novice urologists with limited access experience. Keeping in mind the principals of ALARA, these limited data suggest that this novel technology could have significant benefits for patients and providers alike. Source of Funding: Johnson & Johnson © 2022 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 207Issue Supplement 5May 2022Page: e688 Advertisement Copyright & Permissions© 2022 by American Urological Association Education and Research, Inc.MetricsAuthor Information Mitchell Humphreys More articles by this author Kevin Wymer More articles by this author Ben Chew More articles by this author Janet Zhen More articles by this author Fuad Elkhoury More articles by this author Sri Sivalingam More articles by this author Matthew Dunn More articles by this author Michael Borofsky More articles by this author Expand All Advertisement PDF downloadLoading ...

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• MP28-14 PREDICTIVE VALUE OF THE INITIAL VOID AFTER BPH SURGERY AND NEED FOR FOLEY CATHETERIZATION

  The Journal of Urology · 2021

  • Medicine
  • Surgery
  • Urology

  You have accessJournal of UrologyBenign Prostatic Hyperplasia: Epidemiology & Evaluation (MP28)1 Sep 2021MP28-14 PREDICTIVE VALUE OF THE INITIAL VOID AFTER BPH SURGERY AND NEED FOR FOLEY CATHETERIZATION Thomas Gaither, Jorge Ballon, Corinne Del Rosario, Stephanie Pannell, Z Chad Baxter, Fuad Elkhoury, and Matthew Dunn Thomas GaitherThomas Gaither More articles by this author , Jorge BallonJorge Ballon More articles by this author , Corinne Del RosarioCorinne Del Rosario More articles by this author , Stephanie PannellStephanie Pannell More articles by this author , Z Chad BaxterZ Chad Baxter More articles by this author , Fuad ElkhouryFuad Elkhoury More articles by this author , and Matthew DunnMatthew Dunn More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000002025.14AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: The timing of Foley catheter removal after transurethral resection of prostate (TURP) or Holmium enucleation of prostate (HoLEP) has been debated. Early Foley catheter removal reduces patient discomfort and catheter-associated infection. However, this management strategy may place patients at risk for urinary retention, which has been reported to occur in 10-15% of patients after BPH surgery. We aimed to assess the predictive value of the average percent bladder emptying on postoperative day 1. METHODS: We performed a prospective cohort study of all men undergoing TURP or HoLEP from December 2019 to present. All men included in the study underwent trial of void on postoperative day 1. Normal saline was instilled into the bladder until a strong urge to void and the catheter was removed. Voided volume and post void residuals (PVRs) were recorded using ultrasound. The primary outcome of interest was a need for Foley decompression after hospital discharge. Patients were categorized into three groups based on the average percentage of bladder emptying: <50%, 51-75%, or >75% for all voids. Descriptive statistics were used to assess the relationship between initial void and subsequent need for Foley decompression. RESULTS: 119 men underwent BPH surgery (55 TURP and 64 HoLEP). The median age, interquartile range (IQR) was 70 (64-75). The preoperative prostate size was 103 cc (IQR 61-142). Thirteen patients (11%) were undergoing a repeat procedure. The majority of patients (83%) were voiding before the operation, whereas 7% were CIC dependent and 10% were Foley dependent. Nine patients (8%) had their Foley catheters reinserted in the hospital and were excluded from the analysis. In total, 14 patients (12%) represented in urinary retention and required Foley decompression. In the initial void, the median percentage of bladder emptying was 73% (IQR 56-93%). The initial void correlated poorly with subsequent voids (r2 values of 0.12, 0.06, and 0.17 with the second, third, and fourth void respectively). Figure 1 shows the relationship between average bladder emptying and subsequent need for a Foley catheter stratified by surgery type. CONCLUSIONS: The initial void does not strongly correlate with the ability to empty one’s bladder on subsequent voids. Percent bladder emptying may be more predictive after HoLEP versus TURP but requires further study recruitment. Source of Funding: Departmental © 2021 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 206Issue Supplement 3September 2021Page: e486-e486 Advertisement Copyright & Permissions© 2021 by American Urological Association Education and Research, Inc.MetricsAuthor Information Thomas Gaither More articles by this author Jorge Ballon More articles by this author Corinne Del Rosario More articles by this author Stephanie Pannell More articles by this author Z Chad Baxter More articles by this author Fuad Elkhoury More articles by this author Matthew Dunn More articles by this author Expand All Advertisement PDF downloadLoading ...

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Frequent coauthors

• Leonard S. Marks

  16 shared

• Shyam Natarajan

  12 shared

• Anthony Sisk

  11 shared

• Ely Felker

  University of California, Los Angeles

  11 shared

• Merdie Delfin

  8 shared

• Lorna Kwan

  UCLA Health

  6 shared

• Scott A. Tomlins

  6 shared

• Simpa S. Salami

  University of Michigan–Ann Arbor

  6 shared

Education

• M.D.

  UCLA

• Other, Endourology and Robotic Surgery

  UCLA

Awards & honors

• Super Doctors® Southern California Rising Stars (2024, 2025,…
• Willard E. Goodwin MD Resident Teaching Award – Department o…
• Guy Dalla Riva Award for Excellence in Clinical Care and Res…
• H&H Lee Research Grant – UCLA (2017)
• CI-CARE Award for Exceptional Patient-Centered Care – UCLA (…