Publications

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A updated list of published and presented academic work from the NTBIC Program

Journals

2025
 Lopez, M., Fulton, J., Kristinsson, H., Kim, S., Stuart, E., Chen, P., Thomas, A., Hussey-Zommers, M., Roy, R., Kapoor, A., & Conrad, A.
Development of the KeyStrokes test: An online neuropsychological assessment for attention, processing speed and executive function.
Journal of Neuropsychology, 2025, 1-17. https://doi.org/10.1111/jnp.12426
[Paper]
2024
 Chen PM, Lee S, Cruz L, Lopez M, Thomas A, Chen J, Grigorian A, Nahmias J, Lekawa M.
iPad-Based Neurocognitive Testing (ImPACT-QT) in Acute Adult Mild Traumatic Brain Injury/Concussion: Study on Practicality and Bedside Cognitive Scores in a Level 1 Trauma Center.
American Surgeon 2024, PMID: 38592191.
[Paper]
Kang J*, Shah I*, Shahrestani S, Chen PM, Lopez A, Chen JW.
Friedman’s Gradient-Boosting Algorithm Predicts Lactate-Pyruvate Ratio Trends in Cases of Intracerebral Hemorrhages.
World Neurosurgery. 2024. PMID: 38679378.
[Paper]
Shin, J, Nahmias, J, Chen, P, Chen, J, Lekawa, M, Nguyen, L, Grigorian, A.
Identifying the Influence of Lung-Related Injuries and Other Factors on Delirium in Traumatic Brain Injury Patients: A National Analysis.
Journal of Head Trauma Rehabilitation, 2024. PMID: 40326920
[Paper]
2023
 Shah I, Chen P.M., Tran DK, Chen JW
Cerebral microdialysis demonstrates improvements in brain metabolism with cerebrospinal fluid diversion in spontaneous intracerebral hemorrhage
Surgical Neurology 2023, 14 ; 395. PMID: TBD .
[Paper]
Izzy S, Grashow R, Radmanesh R, Chen P , Taylor H, Formisano R, Wilson F, Wasfy M, Baggish A, Zafonte R.
Long-term risk of cardiovascular disease after traumatic brain injury: screening and prevention.
Lancet Neurology, 2023, 22 (10); 959-970. PMID: 37739576.
[Paper]
Chen P.M., Shah, I, Manning C, Lekawa M, Chen J
Considerations for Intracranial Monitoring and Surgery in Severe Traumatic Brain Injury with Temporal Lobe Contusion
Neurocritical Care 2023, 39 (2) ; 527-529. PMID: 37286845.
[Paper]
Chen P.M., Stekhoven S, Haider A, Jing J, Ge W, Rosenthal ES, Westover MB, Zafar S.F.
Association of Epileptiform Activity With Outcomes in Toxic- Metabolic encephalopathy.
Critical Care Explor, 2023, 5 (5); epub. PMID: 37168691
[Paper]
2022
 Izzy S, Chen PM , Tahir Z, Graashow R, Radmanesh F, Cote D, Yahya T, Dhand A, Taylor H, Shih S, Albastaki O, Rovito C, Snider S, Whalen M, Nathan D, Miller K, Speizer F, Baggish A, Weisskopf M, Zafonte R.
Association of Traumatic Brain Injury With the Risk of Developing Chronic Cardiovascular, Endocrine, Neurological, and Psychiatric Disorders.
Jama Netw Open. 2022; 5(4). PMID: 35482306.
[Paper]

Abstracts

  1. Chen PM, Tran K, Shah I, Chen J. “Multimodal Neuromonitoring: Cerebral Microdialysis In a Case Of Intracerebral Hemorrhage” , poster presentation,  2023 SCCM Critical Care Congress, San Francisco, CA, January 2023.
  2. Chen PM, Dela Cruz L, Lopez M, Chen J, Nahmias J, Lekawa M. Use of iPad-Based Neurocognitive Testing in Acute Mild Traumatic Brain Injury: Preliminary Study on Practicality and Bedside Cognitive Scores. Neurotrauma 2023, Austin TX, June 2023. 
  3. Chen P, Dastur C, Stern- Nezer S, Akbari Y, Chen J, Lekawa M , Nahmias J, Yu W.  “Severe Traumatic Brain injury: Clinical Characteristics, Multimodal Monitoring Trends, and Outcomes in a New Comprehensive Neurotrauma Consult Service, poster presentation, Neurocritical Care Society  21stAnnual Meeting, Phoenix, AZ ,  August 2023
  4. Chen PM, Thomas A, Lopez M, Akbari Y, Stern-Nezer S, Yu W, Dastur C, Groysman L, Chen J, Nahmias M, Gregorian A, Lekawa, M, Izzy S. Hot off the Press Invited Oral Presentation: “Age and Pre-existing Comorbidities in Patients With New Cardio-Metabolic and Neuro-Psychiatric Comorbidities Post-Traumatic Brain Injury”, 23rd Western Neurotrauma Symposium, Los Angeles, CA, September 2023.
  5. Valesky W, Darwish  Akbari Y, Stern-Nezer S, Yu W, Dastur C, Groysman L, Chen J, Nahmias J, Grigorian A, Lekawa M, Chen PM. Grade 3 DAI in TBI Does Not Predict Need for Tacheostomy, Gastrotomy or Discharge Outcome. 2024 Critical Care Congress, Phoenix AZ, January 2024.  *trainee presenter
  6. Lopez, M., Fulton, J., Stuart, E., Kim, S., Chen, P., Roy, R., Thomas, A. Development and reliability of the Arrows Test: An online neuropsychological assessment for attention, information processing speed, and executive functioning, The International Neuropsychological Society Conference 2024, New York. February 2024 *trainee presenter
  7. Lopez, M., Thomas, A., Chen, P. The 10-item version of the Word Choice Test (WCT): A replication study, The International Neuropsychological Society Conference 2024, New York, February 2024. *trainee presenter
  8. Painter R, Nahmias J, Guner Y, Goodman L, Chen P, Chen J, Liang T, Grigorian A. Impact of Whole Blood Transfusion on Complication Rates and Mortality in Pediatric Trauma Patients with Traumatic Brain Injury. Pacific Coast Surgical Association, Rancho Mirage, CA. February 9, 2024.*trainee presenter
  9. Nguyen L, Nahmias J, Chen P, Chen J, Lekawa M, Grigorian A. Packed Red Blood Cell Transfusion: A Catalyst for Thrombosis in Patients with Traumatic Brain Injury? North American Brain Injury Society, Las Vegas, NV. March 27-30th, 2024. *trainee presenter
  10. Shin, J., Nahmias, J., Chen, P., Chen, J., Lekawa, M., Nguyen, L., Grigorian, A. Identifying the influence of lung-related injuries on delirium in traumatic brain injury patients: a national analysis. In: North American Brain Injury Society; 2024 Mar 27-30; Las Vegas, Nevada (NV); 2024. Abstract nr 60. *trainee presenter
  11. Picton B, Andalib S, Spina A, Camp B, Solomon S, Liang J, Chen P, Chen J, Hsu F, Oh M. Balancing Readability and Content Fidelity: Accessing GPT- 4.0s Simplification of Neurological Education Materials”. American Academy of Neurosurgeons 2024, Chicago IL. *trainee presenter.
  12. Sakayan M, Thomas A, Lopez M, Fang A, Joyner C, Grigorian A, James S, Izzy S, Chen PM. Socioeconomic Determinants of Long-Term Disability Outcomes in Traumatic Brain Injury Patients, 2024 American Academy of Neurology Annual Meeting.   Denver, CO. April 2024 * trainee presenter
  13. Thomas A, Lopez M, Patel K, Grigorian A, Lee A, Boden-Albala B, Chen PM. Cardiometabolic/Cardiovascular Health and Healthcare Access in Subacute-Chronic TBI Patients. National Neurotrauma Meeting 2024. San Francisco, June 2024. *trainee presenter 
  14. Kapoor, A., Conrad, A., Kristinsson, H., Lopez, M., Chen, P. Global cognition and executive function predict verbal practical judgment in a mixed clinical sample of older adults. California Academic Geriatrics Institutions Inaugural Conference, Irvine, CA, May 20024 *trainee presenter
  15. Sakayan M, Joyner C, Fang A, Thomas A, Lopez M, Grigorian A, Izzy S, Boden-Albala B, Chen PM. Relationship between Social Determinants of Health (SDOH), Clinical Phenotypes, and Disability in Subacute-Long Term TBI, 2024 American Neurological Association Annual Meeting. Orlando, FL. September 2024 * trainee presenter *oral presentation 
  16. Neurostimulant Practice Patterns and Clinical Outcomes in Moderate-Severe TBI . Hanna, Sebastian , Ramesh A ,  Joyner C , Akbari Y , Stern-Nezer S , Dastur C , Valesky W ,  Darwish S ,  Yu W , Chen J,  Grigorian A, Nahmias J , Chen PM. 22nd Annual Neurocritical Care Society Meeting. San Diego , CA , July 2024. *trainee Presentation. 
  17. Chen PM, Tong S, Jung B, Akbari Y, Stern- Nezer S, Dastur C, Yu Wengui, Valesky W, Darwish S, Chen JW, Lekawa M, Grigorian A, Nahmias J, Qing K. Early quantitative EEG (qEEG) features and outcomes in critically ill moderate-severe traumatic brain injury (msTBI). International Neurotrauma Society Meeting, Cambridge, UK, September 2024. 
  18.   Kapoor, A., Conrad, A. T., Lowry-Shephard, S., Kristinsson, H., Chen, P., Lopez, M. (2025, February). Processing speed fully mediates the relationship between memory and Dot Counting Test [Poster Presentation]. International Neuropsychological Society (INS) 2025 Annual Meeting, New Orleans, LA. * trainee presenter
  19. Conrad, A. T., Kapoor, A., Lowry-Shephard, S., Kristinsson, H., Chen, P., Lopez, M. (2025, February). Receiver operating characteristic (ROC) curve analysis for a created forced choice trial of the Hopkins Verbal Learning Test – Revised (HVLT-R) to measure engagement in a mixed clinical sample [Poster Presentation]. International Neuropsychological Society (INS) 2025 Annual Meeting, New Orleans, LA. * trainee presenter
  20. Tsutsumi K, Tong S, Jung B, Akbari Y, Stern-Nezer S, Dastur C, Yu W, Valesky W, Darwish S, Goodwin M, Chen J, Lekawa M, Grigorian A, Nahmias J, Qing K, Chen PM. Predictive Value of Early Quantitative EEG Features in Critically Ill Moderate-severe Traumatic Brain Injury (TBI) Patient Prognostication. Poster. presented at: 2025 American Academy of Neurology Annual Meeting; April 2025; San Diego, CA. * trainee presenter
  21. Hanna S, Ramesh A, Joyner C,  Akbari Y, Stern-Nezer S, Dastur C, Valesky W, Darwish S, Goodwin M, Yu W, Chen J, Grigorian A, Nahmias J , Chen PM. Antipsychotic Practice Patterns and Clinical Outcomes in Moderate-Severe TBI. Poster. presented at: 2025 American Academy of Neurology Annual Meeting; April 2025; San Diego, CA. * trainee presenter
  22. Fang AS, Joyner C, Kapoor A, Conrad A, Sakayan M, Lopez M, Grigorian A, Burruss S, Izzy S, Nguyen D, Boden-Albala B, Chen PM. Relationship Between Social Determinants of Health and Patient-reported General Self-efficacy Outcomes in Traumatic Brain Injury Clinic Patients. Poster presented at: 2025 American Academy of Neurology Annual Meeting; April 2025; San Diego, CA. * trainee presenter
  23. Joyner C, Fang A, Kapoor A, Conrad A, Albala B, Nguyen D, Lopez M, Boden-Albala B, Chen PM. Exploratory Analysis of Comprehensive Neurocognitive Testing in Post-traumatic Brain Injury (TBI) Clinic Patients with Primary Cognitive Symptoms. Poster presented at: 2025 American Academy of Neurology Annual Meeting; April 2025; San Diego, CA. * trainee presenter
  24. Sakayan M, Joyner C, Fang AS, Kapoor A, Conrad A, Lopez M, Grigorian A, Izzy S, Nguyen D, Boden-Albala B, Chen PM. Brain Health and Traumatic Brain Injury (TBI): Relationship Between Brain Care Score and Disability in Subacute-Long Term TBI. Poster presented at: 2025 American Academy of Neurology Annual Meeting; April 2025; San Diego, CA. * trainee presenter
  25. Hanna S, Ramesh A, Joyner C,  Akbari Y, Stern-Nezer S, Dastur C, Valesky W, Darwish S, Goodwin M, Yu W, Chen J, Grigorian A, Nahmias J , Chen PM. Antipsychotic Practice Patterns and Clinical Outcomes in Moderate-Severe TBI. Poster. presented at: 2025 American Academy of Neurology Annual Meeting; April 2025; San Diego, CA. * trainee presenter
  26. Lowry-Shepard, S., Conrad, A., Kapoor, A., Ruiz, A., Kristinsson, H., Chen, PM., Lopez, M.Combined total score for longest digit span forward (LDSF), longest digit span backward (LDSB), and longest digit span sequencing (LDSS) correlates with premorbid functioning and overall neuropsychological test performance. Poster presented at the 2025 National Academy of Neuropsychology (NAN) Annual Meeting, Los Angeles, CA. *trainee presenter
  27. Conrad, A., Kapoor, A., Lowry-Shephard, S., Kristinsson, H., Tovar Vargas, S., Sakayan, M., Boden-Albala, B., Mapstone, M., Chen, PM., Fang, A., Joyner, C., & Lopez, M. Understanding the relationship between cardiovascular health factors and neuropsychological test performance after traumatic brain injury. Poster presented at the 2025 National Academy of Neuropsychology (NAN) Annual Meeting, Los Angeles, CA. *trainee presenter