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Graduate Medical Education Research Publications

Our residents and faculty are committed to advancing medical knowledge through research and scholarship. This collection showcases the published work produced by the Riverside Healthcare Graduate Medical Education community. These publications reflect our dedication to clinical excellence, innovative care, and continuous learning.

Internal Medicine Research

  • Vattem N., Mariano A., Patel R., Bagai A., Joshi D., Phillips M., Reddy V., Haryani V.M., Huynh N., Jain T., Beri A., (2025), When clean turns contaminated: a case of endocarditis due to exposed AICD leads. ACC 2025, Chicago, IL & JACC. 2025 Apr 1;85(12_Supplement):3627, 10.1016/S0735-1097(25)04111-7
  • Vattem N., Patel R., Mariano A., Ali D., Joshi D., Patel V., Beri A., Huynh N., Jain T., Reddy V., (2025), A rare case of glycopyrrolate-induced biventricular Takotsubo cardiomyopathy. ACC 2025, Chicago, IL & JACC. 2025 Apr 1;85(12_Supplement):4546, 10.1016/S0735-1097(25)05030-2
  • Patel D., Patel R., Bagai A., Mariano A., Jain T., Liu S., Haryani V.M., Beri A., Huynh N., (2025), When two paths cross: a case of transthyretin cardiac amyloidosis in a patient with multiple myeloma. ACC 2025, Chicago, IL & JACC. 2025 Apr 1;85(12_Supplement):4340, 10.1016/S0735-1097(25)04824-7
  • Muralidharan S., Zyka A., Zachariach A., Betlej T., Simisir S., Abraham R. Z., (2024), The contemporary equivalent of luetic aortitis. CHEST 2024, Boston, MA & Chest 166(4):A1494. A241, 10.1016/j.chest.2024.06.200 — awarded the Top Rapid-Fire Case Report Award
  • Jain S., Singh S., (2024), Unraveling the mystery of idiopathic CD4+ T-cell lymphocytopenia: a case report of unexplained immunodeficiency. CHEST 2024, Boston, MA & Chest 166(4):A1494, 10.1016/j.chest.2024.06.950
  • Jain S., Kata V., O'Connor T., Williams G., (2024), Unraveling the complications of acute cholecystitis: a case report of hemoperitoneum leading to gastric ulcerations. ACG 2024, Philadelphia, PA & AJG 119(10S):S1776, 10.14309/01.ajg.0001039432.62346.0f
  • Meyer N., Kata V., (2024), Dieulafoy lesion: a commonly missed and rare cause of massive gastrointestinal bleeding. ISMS 2024
  • Singh S., Sukhal S., Betlej T. M., Patel R., Kata V., Vora I., Vattem N., Mayer N., (2024), An unfortunate twist: sarcomatoid pulmonary spindle cell carcinoma. CHEST 2024, Boston, MA & Chest 166(4):A4352, 10.1016/j.chest.2024.06.2641
  • Singh S., Sutherland M., Shah A., Segrest B., (2024), B-cell lymphoma disguised as biliary obstruction: a rare presentation. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001039192.07166.de
  • Singh S., Sutherland M., Patel D., Sasso B., Swanson C., Lacher C., Betlej T., (2024), Unraveling the mysteries of rare colorectal mucinous adenocarcinoma: challenges and therapeutic prospects. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001040660.80482.ab
  • Andrews T., Sutherland M., Hamann K., Mayer N., Sasso B., (2024), A rare case of complete esophageal obstruction following recurrent banding of gastroesophageal varices. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001042672.97055.e0
  • Hamann K., Swanson C., Kaplan M., (2024), A peculiar problem in PSCC. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001039816.98769.96
  • Hamann K., Satinsky A., Andrews T., Shah A., (2024), Diffuse ductal dilation in diffuse large B-cell lymphoma. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001039820.40830.03 — awarded Outstanding Poster Presenter
  • Hamann K., Kata V., Joshi D., (2024), Cardiac clot or cancer? A presentation of metastatic HCC. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001047492.80298.d9 — Presidential Poster Award
  • Kata V., Patel D., Thomas M., Joshi D., (2024), Russell body esophagitis: food bolus leads to rare diagnosis. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001042948.62989.cf
  • Mayer N., Andrews T., (2024), A hidden danger: GI perforation presenting as pneumomediastinum in a chronic corticosteroid user. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001041948.69662.cd
  • Mayer N., Kata V., Patel D., Betlej T., Errampalli D., O'Connor T., Kaplan M., Bhargava N., (2024), CMV enteritis: a rare culprit of protein-losing enteropathy in an immunocompetent adult. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001049180.69392.bd — Outstanding Poster Presenter
  • Singh S., Sutherland M., Vattem N., Shah A., Shah K., (2024), Gastrointestinal guise: non-ischemic cause of elevated troponins. ACG 2024, Philadelphia, PA & AJG 119(10S), 10.14309/01.ajg.0001042540.95249.20
  • Andrews T., Ploussard B., Muralidharan S., Abraham R.Z., (2024), Bronchoprovocation Test Gone Awry, ATS 2024, San Diego, CA
  • Andrews T., Sutherland M., Hamman K., Mayer N., Sasso B., (2024), A rare case of complete esophageal obstruction following recurrent banding of gastroesophageal varices, ACG 2024, Philadelphia, PA
  • Hamann K., Swanson C., Liu S., Abraham R.Z., Patel V., Simsir S., (2024), The chamber plops: a case of a right atrial fibroelastoma, ATS 2024, San Diego, CA
  • Muralidharan S., (2024), Post-covid fibrosis, a red herring?, ACP 2024, Boston, MA
  • Muralidharan S., Joshi D., Andrews T., Huynh N., Patel V., Frogge N., Jagannathan A., (2024), Floats like a butterfly, stings like a bee - A rare case of hemangioma in the peripheral artery with a potential risk of threatened limb, ACC 2024, Atlanta, GA
  • Muralidharan S., Sutherland M., Joshi D., Andrews T., Buczyna J., Abraham R. Z., (2024), Oscillating eyes: A Clue to an Uncommon Stroke Presentation, ATS 2024, San Diego, CA
  • Muralidharan S., Thomas M., (2024), Whipple's endocarditis, ACP 24, Boston, MA
  • Muralidharan S., Thomas M., (2024), Whipple's endocarditis, SHM Converge 2024, San Diego, CA
  • Muralidharan S, Mariano AT, Joshi D, Andrews TE, Liu S, Basha A, Huynh N., (2024), A Rare Case of Drug-Induced Sweet Syndrome After Pembrolizumab Therapy. Cureus. 2024 Jun 9;16(6):e62027. doi: 10.7759/cureus.62027. PMID: 38859947; PMCID: PMC11163154.
  • Patel R., Mariano A., Lee A., Liu S., Vikas P., (2024), Into the blue - Management of adult congenital Disease in critical Care setting, ACC 2024, Atlanta, GA
  • Ismail A., Abraham R. Z., Sheikh S., (2024), 623: Resistant acute motor sensory axonal neuropathy following covid-19 infection. Critical Care Medicine 52(1):p S284, January 2024. | DOI: 10.1097/01.ccm.0001000664.80685.06
  • Ploussard B., Huynh N., (2024), Libman-sacks endocarditis causing recurrent embolic strokes and splenic infarcts, ACC 2024, Atlanta, GA
  • Ploussard B., Ali D., Mariano A., Lee A., Huyhn N., Liu S., (2024), A rare case of electrical ventricular tachycardia storm and cardiomyopathy secondary to congenital submitral aneurysm, ACC 2024, Atlanta, GA
  • Vattem N., Reddy V., (2024), Recurrent Klebsiella Infections, Where Does This Lead Us?”, ACP 24, Boston, MA
  • Vattem N., Kata V., Ali D., Joshi D., (2024), Recurrent spontaneous coronary artery dissection, SHM Converge 2024, San Diego, CA
  • Patel R., Kabir M., Hassan S., Tayon M., Chandan N., Philips M., (2023), Urine trouble: a case of Post Strep Glomerulonephritis and Ludwig's Angina, ACP 2023, San Diego, CA
  • Patel R., Kata V., Joshi D., Vora I., Chandan N., Anderson M., Sukhal S., (2023), Three’s Company: A Tale of Disseminated Aspergillus, Burkholderia Bacteremia, & Cirrhosis, CHEST 2023, Honolulu, HI
  • Hassan S., Kabir M., Patel R., Sibai F., (2023), Could It Be The Statin? Statin-Induced Necrotizing Autoimmune Myopathy: A Rare Complication of Statin Use, ISMS 2023, Chicago, IL
  • Kabir M., Kata V., Joshi D., Philips M., Hassan S., Khanna S., (2023), A Case of Disseminated Nocardiosis: Mimicking Metastatic Progression with Post-Obstructive Pneumonia, ATS 2023, Washington, DC
  • Thomas M., Shah K., (2023), Case report on Biliary Cystadenoma, ACG 2023, Vancouver, British Columbia, Canada.
  • Andrews T., Kozak P., Shah K., Siddiqui N., (2023), Disseminated VZV, a Rare Case of Hepatitis and Pancreatitis, ACG 2023, Vancouver, British Columbia, Canada
  • Vattem N., Singh S., Almeida R., (2023), Hard At Work: Secondary Pulmonary Alveolar Proteinosis, ACP 2023, Illinois Chapter, Oak Brooks, IL
  • Kata V., Patel D., Bhargava N., (2023), An Accidental Finding: Significant Foreign Body Ingestion, ACG 2023, Vancouver, British Columbia, Canada
  • Kata V., Rawal N., Hassan S., Bhargava N., O'Connor T., (2023), An Anomalous Path Leads to a Named Atypical Blockage, ACG 2023, Vancouver, British Columbia, Canada
  • Kata V., Patel D., Shah A., (2023), A Misplaced Twisting of Bowel: A Transverse Colon Volvulus, ACG2023, Vancouver, British Columbia, Canada
  • Swanson C., Abraham R.Z., Ruebhausen M., Jimenez J., (2022), A red herring CVA with unexpected outcome: illustrative case. J Neurosurg Case Lessons. 2022 Jan 10;3(2):CASE21565. doi: 10.3171/CASE21565. PMID: 36130578; PMCID: PMC9379737.
  • Ahmed A., Kechker D., Vaidya A., (2020), A unique case of congenital pulmonary airway malformation diagnosed in an adult. Chest [Internet]. 2020 Oct 1;158(4):A1639. Available from: https://doi.org/10.1016/j.chest.2020.08.1476
  • Kechker D., Ahmed A., Khanna S., Almeida R., (2020), A rare and late presentation of a hereditary cystic lung disease. Chest [Internet]. 2020 Oct 1;158(4):A1158. Available from: https://doi.org/10.1016/j.chest.2020.08.1056

Psychiatry Research

  • Khan S., Hooda F., Miller J., (2025), Delirium and psychosis associated with alprazolam withdrawal: case report and literature review. American Journal of Psychiatry Residents' Journal 20(3):23-25, 10.1176/appi.ajp-rj.2025.200307
  • Khan S., Rattin J., Khisty R., (2023), Serotonin syndrome in patient receiving ECT with concurrent serotonergic medications, IOMS 23, Lombard, IL
  • Khan S., Belford M., (2023), Alprazolam withdrawal with delirium and psychosis, IOMS 23, Lombard, IL
  • Khan, Shahzaib, Khadri, Sana, Haque, Lamiah Anne, Anderson, Michael, AND Witkowska, Malgorzata. "Seronegative herpes simplex virus (HSV) encephalitis causing temporal lobe epilepsy resulting in new-onset psychosis: a case report and literature review" AME Case Reports, 2024, doi:10.21037/acr-24-69
  • Khan, Shahzaib, Wennberg, Breanna, Witkowska, Malgorzata, Rattin, Jacob, Khisty, Raunak, An Unexpected Presentation of Serotonin Syndrome in a Patient Receiving ECT, Case Reports in Psychiatry, 2024, 6938553, 4 pages, 2024. 
    https://doi.org/10.1155/2024/6938553 

Cardiology & Interventional Cardiology Research

  • Ali D., Muralidharan S., Fudyma I., Mariano A., Patel R., Jain T., Shashidharan S., Huynh N., (2025), A unique case of a unileaflet mitral valve. ACC 2025, Chicago, IL & JACC. 2025 Apr;85(12_Supplement):4057, 10.1016/S0735-1097(25)04541-3
  • Ali D., Ploussard B., Mariano A., Patel R., Liu S., Zachariah A., (2025), TricValve gets tricky: iatrogenic atrial septal defect due to migration of bicaval prosthesis device. ACC 2025, Chicago, IL & JACC. 2025 Apr;85(12_Supplement):3124, 10.1016/S0735-1097(25)03608-3
  • Patel R., Luli J., Mariano A., Ali D., Vattem N., Liu S., Patel V., Zachariah A., (2025), Struck through the heart: a case of lightning-strike-induced cardiomyopathy. ACC 2025, Chicago, IL & JACC. 2025 Apr;85(12_Supplement):3221, 10.1016/S0735-1097(25)03705-2
  • Fudyma I., Patel V., Furlan T., Adams J., Beri A., (2024), Iatrogenic atrial septal defects following intracardiac echocardiography guided left atrial appendage occlusion, ACC 2024, Atlanta, GA
  • Fudyma I., Patel U., Beri A., (2024), Fluoroscopy-free ablation in patients with implanted cardiac devices: safety and efficiency, ACC 2024, Atlanta, GA
  • Ali D., Hassan S., (2024), Treatment of massive pulmonary embolism with Inari large-bore mechanical thrombectomy, ACC 2024, Atlanta, GA
  • Ali D., Ploussard B., (2024), A rare triple Threat: pneumodiastinum, pneumopericardium and pericarditis, ACC 2024, Atlanta, GA
  • Mariano A., Beri A., (2024), Ticagrelor's arresting performance after elective PCI, ACC 2024, Atlanta, GA
  • Mariano A., Ali D., (2024), One battle after another: Bevacizumab cardiomyopathy after high grade endometrial carcinoma, ACC 2024, Atlanta, GA
  • Lee A., Patel U., Shashidharan S., Zachariah A., (2024), Successful Debulking of Tricuspid Valve Endocarditis Utilizing AngioVac Aspiration Thrombectomy, ACC 2024, Atlanta, GA
  • Lee A., Ali D., Mariano A., Liu S., Cornelius T., Huynh N., (2024), Need to Decompress: A Rare Cause of Pulmonary Embolism in the Setting of Concomitant May-Thurner Syndrome and Congenital Absence of IVC, ACC 2024, Atlanta, GA
  • Mariano A., Muralidharan S., (2023), Treatment of massive pulmonary embolism with Inari large-bore mechanical thrombectomy, ACC 2023, local chapter
  • Mariano A., Joshi D., Andrews T., (2023), A rare triple Threat: pneumodiastinum, pneumopericardium and pericarditis, ACC 2023 local chapter, local chapter
  • Patel U., Lee A., Patel V. et al., (2023), Complex coronary artery to pulmonary artery arteriovenous malformation in the absence of right coronary artery. JACC. 2023 Mar, 81 (8_Supplement) 3776. https://doi.org/10.1016/S0735-1097(23)04220-1
  • Philipose A., Mariano A., Surani B. et al (2023). Out of control: diffuse aortic thombi in “unreduced” calr-mutated essential thrombocythemia. JACC. 2023 Mar, 81 (8_Supplement) 2868. https://doi.org/10.1016/S0735-1097(23)03312-0
  • Patel R., Patel U., Mariano A. et al., (2023), A broken heart on fire: ANCA vasculitis causing acute heart failure. JACC. 2023 Mar, 81 (8_Supplement) 2493. https://doi.org/10.1016/S0735-1097(23)02937-6
  • Siddiqui O., (2023), An interesting case of left main bifurcation revascularization for a patient who declined coronary artery bypass surgery. We performed atherectomy followed by mini-crush technique for bifurcation left main stenting with IVUS guidance for a challenging case of percutaneous revascularization., SCAI 2023, Phoenix, AZ
  • Patel U., Siddique A., Abraham R. Z., Phillips M., Chandan N., (2022), A Case of an Intracerebral Abscess Caused by Sphingomonas paucimobilis, ACOI, Baltimore, MD
  • Alvi N., Nguyen P., Liu S., Siddique A., Patel U., Phillips M., Huynh N., (2020), Infected Abdominal Aortic Aneurysm: A Rare Entity. American College of Cardiology, ACC 2020, Chicago, IL
  • Alvi N., Qadir S., Liu S., Patel A., Anderson M.J., Abraham R.Z., Yousuf A., Patel V.K., (2020), A surprising case of late-onset bacterial endocarditis associated with Gore Helex septal occluder device seven years since implantation. American College of Cardiology (ACC 2020, Chicago, IL).
  • Liu S., Lakhan S., Alvi N., Surani B., Cao T., (2020), Apical Ballooning Syndrome mimicking Acute Myocardial Infarction with Cardiogenic Shock: A Management Challenge. Illinois American College of Cardiology, IACC 2020, Chicago, IL
  • Surani B., Alvi N., Lakhan S., Liu S., Surani B., Jagannathan A., Kapoor G., (2020), Novel Case of Radial Artery Arterio-Venous Fistula: Diagnosis and Management. Illinois American College of Cardiology (IACC 2020, Chicago, IL
  • Liu S., Abraham R.Z., Atieh A., Chandan N., (2017) Rivaroxaban Induced Diffuse Alveolar Hemorrhage. Presented at American College of Osteopathic Internists, ACOI 2017, Washington D.C.

Gastroenterology Research

  • Bhargava N., Kozak P., Kata V., (2024), Hemorrhoidal banding: a retrospective study of effectiveness in a community setting. ACG 2024, Philadelphia, PA & The American Journal of Gastroenterology 119(10S):S706, October 2024, 10.14309/01.ajg.0001033392.62508.d9
  • Patel D., Joshi D., Patel D., Kata V., O'Connor T., (2023), A Clipped Ulcer Unleashes an Intramural Hematoma Starring Gastric Outlet Obstruction, ACG 2023, Vancouver, British Columbia, Canada
  • Kozak P., Satinsky A., Errampalli D., (2023), Melanoma in the Shadows: A Case Report of Anorectal Malignant Melanoma, ACG 2023, Vancouver, British Columbia, Canada
  • Rawal N., (2021), HPV Esophagitis in immunocompetent elderly patient, ACG 2021, Las Vegas, NV
  • Kozak, P.T., Koziol, S., Mariano, A.T., Abraham, R. Z., Phillips, M. T., & Anderson, M.J., (2023), Trending Proinflammatory Markers to Prognosticate Mechanical Ventilation in COVID-19. Infectious Diseases in Clinical Practice 31(2):e1223, March 2023.
  • Patel D., Rivera-Matos L., (2022), A case of biliary cutaneous fistula 17 years after orthotopic liver transplantation, DDW 2022, San Diego, CA
  • Kozak P., Abraham R.Z, Mariano A., Lang D., (2021), Spontaneous Transdiaphragmatic Intercostal Hernia, ATS 2021 https://doi.org/10.1164/ajrccm-conference.2021.203.1_MeetingAbstracts.A…
  • Pamudurthy V., Roy S., Adams R., Bhargava N., (2020), In-Service education and changes to the electronic health record system improve intravenous fluid hydration in the emergency department in patients with a diagnosis of acute pancreatitis. Gastroenterology [Internet]. 2020 Aug 1;159(2):e37. Available from: https://doi.org/10.1053/j.gastro.2020.06.080
  • Pamudurthy V., Errampalli D., (2020), A case of sarcoidosis of colon. Practical Gastro [Internet]. 2020 Apr 30; Available from: https://practicalgastro.com/2020/04/26/a-case-of-sarcoidosis-of-colon/
  • Pamudurthy V., Abraham R.Z., Anderson M., (2020), 2. 584: Nocardia nova liver abscesses post-allogeneic hematopoietic stem cell transplant. Critical Care Medicine 48(1):p 272, January 2020. | DOI: 10.1097/01.ccm.0000626076.52640.61
  • Rawal N., Kozak P., O'Connor T., Anderson M., Hill K., (2021), S2031 A Rare Case of Human Papilloma Virus Esophagitis in an Immunocompetent Elderly Patient. The American Journal of Gastroenterology 116():p S881, October 2021. | DOI: 10.14309/01.ajg.0000781656.23910.
  • Pamudurthy V., Roy S., Adams R., Bhargava N., (2020), In-Service education and changes to the electronic health record system improve intravenous fluid hydration in the emergency department in patients with a diagnosis of acute pancreatitis. Gastroenterology [Internet]. 2020 Aug 1;159(2):e37. Available from: https://doi.org/10.1053/j.gastro.2020.06.080
  • Pamudurthy V., Abraham R.Z., Anderson M., (2020), 584: Nocardia nova liver abscesses post-allogeneic hematopoietic stem cell transplant. Critical Care Medicine [Internet]. 2020 Jan 1;48(1):272. Available from: https://doi.org/10.1097/01.ccm.0000626076.52640.61
  • Pamudurthy V., Alam B., Abraham R.Z, Betlej T., Sipahi M., (2019), Solitary Neuroendocrine Breast Mass: Primary Mammary Carcinoma or Metastatic Disease?, American Thoracic Society, Dallas, TX
  • Zeglen A., Pamudurthy V., (2019), Persistent Atelectasis in the Young Adult Merits Aggressive Work Up, American Thoracic Society, Dallas, TX
  • Pamudurthy V., Lodhia N., Konda V.J.A., (2019), Advances in endoscopy for colorectal polyp detection and classification. Proc (Bayl Univ Med Cent). 2019 Dec 18;33(1):28-35. doi: 10.1080/08998280.2019.1686327. PMID: 32063760; PMCID: PMC6988631.
  • Pamudurthy V., Abraham R.Z., Alam B., Betlej T., Sipahi, M., (2019), Solitary Neuroendocrine Breast Mass: Primary Mammary Carcinoma or Metastatic Disease?. In B67. CASE REPORTS: DIAGNOSTIC AND MANAGEMENT DILEMMAS (pp. A3923-A3923). American Thoracic Society.
  • Zeglen A., Pamudurthy V., & Abraham R.Z., (2019), Persistent Atelectasis in the Young Adult Merits Aggressive Work Up. In B42. DYSPNEA CASE REPORTS (pp. A3198-A3198). American Thoracic Society.
  • Pamudurthy V., Jurkovic E., Roy S., Adams R., Bhargava N., (2018), Retrospective Analysis Assessing Adequate IV Fluid Hydration in the Emergency Department in Patients With a Diagnosis of Acute Pancreatitis: 1130. American Journal of Gastroenterology 113():p S649-S650, October 2018.
  • Pamudurthy V., Abraham R.Z., Betlej T., Shah A., Kim D., Sasso B., Chacko A., (2017), Splenic Avulsion After Endoscopic Retrograde Cholangiopancreatography,” American College of Osteopathic Internists Annual Convention, Washington D.C.