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John Day

TitleDepartment Chairperson
InstitutionUniversity of Arkansas for Medical Sciences
DepartmentDepartment Chairs, College of Medicine
Address1030 Stephens Spine Center
501 Jack Stephens Drive
Mail Slot # 507
Little Rock AR 72205
Phone501-296-1138
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    Collapse Overview 
    Collapse overview
    Dr. J.D. Day is an internationally known leader in skull base surgery and specialist in Gamma Knife surgery and vascular disorders of the brain and skull base. He previously was Director of Cranial Base Surgery, Associate Professor and Vice Chairman for Academic Affairs, and Associate Residency Program Director in the Department of Neurosurgery at the University of Texas Health Science Center (UTHSC) at San Antonio.Dr. Day received his medical degree from the University of Washington School of Medicine in 1989. He completed residency in neurological surgery at the University of Southern California (USC) Medical Center. Dr. Day continued his postdoctoral training with a research fellowship in cranial base surgery and anatomy at the University of Vienna Medical School in Austria, under the tutelage of pioneering neurosurgeon Dr. Wolfgang T. Koos.After residency training fellowship, Dr. Day worked with legendary neurosurgeon Dr. Takanori Fukushima for one year at Allegheny General Hospital in Pittsburgh. He then joined the prestigious Lahey Clinic in Boston as Director of Cerebrovascular and Skull Base Surgery. In 1995 Dr. Day joined the faculty of the USC School of Medicine in Los Angeles, where he was also Director of Neurological Surgery at the world-renowned House Ear Clinic.In late 2001, he returned to Pittsburgh and Allegheny General Hospital as the Director of the Center for Cerebrovascular Surgery and Stroke, also serving on the faculty of Drexel University College of Medicine through 2004. He practiced in Colorado for the next three years, until being recruited to UTHSC in San Antonio in 2007. He was named Vice Chairman for Academic Affairs and Associate Residency Program Director in the Department of Neurosurgery at UTHSC the following year.Dr. Day has authored four textbooks on skull base surgery and has published over 80 articles on neurosurgical topics. He has been on the editorial board of Neurosurgery since 1999. He has taught skull base surgery techniques and lectured extensively in the United States, Europe, Africa and Asia.


    Collapse Research 
    Collapse research activities and funding
    VIZ-ICH-01     (DAY, JOHN)Dec 21, 2019
    Viz.ai, Inc
    Automated Detection, Characterization, Triage, and Recruitment of ICH Subjects Using Artificial Intelligence in the ENRICH Trial (IRB 229078)
    Role: Principal Investigator
    NCT02880878     (DAY, JOHN)Dec 19, 2017
    NICO Corporation
    Early Minimally-invasive Removal of ICH (ENRICH
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions. Don't see publications published under other names? Login to add alternative names.
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    1. Rennert RC, Brandel MG, Steinberg JA, Nation J, Couldwell WT, Fukushima T, Day JD, Khalessi AA, Levy ML. Maturation of the sella turcica and parasellar region: Surgical relevance for anterior skull base approaches in pediatric patients. Clin Neurol Neurosurg. 2022 04; 215:107168. PMID: 35247690.
      View in: PubMed
    2. Perez I, Gokden M, Day JD, Yaziji H, Pina-Oviedo S. Primary histiocytic sarcoma of the clivus with focal extension into central nervous system and neurologic manifestations: First description at an unusual site with an overwhelming and rapid progression. Clin Neuropathol. 2022 Mar-Apr; 41(2):74-82. PMID: 34958302.
      View in: PubMed
    3. Hundley KN, Pait TG, Rodriguez A, Day JD. Dr. Louise Eisenhardt's personal notes: how she and Dr. Cushing collected data and followed patients. J Neurosurg. 2022 04 01; 136(4):1173-1178. PMID: 34560651.
      View in: PubMed
    4. Rennert RC, Brandel MG, Steinberg JA, Gonda DD, Friedman RA, Fukushima T, Day JD, Khalessi AA, Levy ML. Maturation of the anterior petrous apex: surgical relevance for performance of the middle fossa transpetrosal approach in pediatric patients. J Neurosurg. 2021 Sep 17; 1-7. PMID: 34534955.
      View in: PubMed
    5. Darrigues E, Elberson BW, De Loose A, Lee MP, Green E, Benton AM, Sink LG, Scott H, Gokden M, Day JD, Rodriguez A. Brain Tumor Biobank Development for Precision Medicine: Role of the Neurosurgeon. Front Oncol. 2021; 11:662260. PMID: 33981610.
      View in: PubMed
    6. Rennert RC, Brandel MG, Steinberg JA, Martin JR, Gonda DD, Fukushima T, Day JD, Khalessi AA, Levy ML. Surgical Relevance of Pediatric Anterior Clinoid Process Maturation for Anterior Skull Base Approaches. Oper Neurosurg (Hagerstown). 2021 02 16; 20(3):E200-E207. PMID: 33372959.
      View in: PubMed
    7. Morris TW, Hundley KN, Thomas KO, Lockhart EC, Rodriguez A, Day JD. Decompression of Cavernous Sinus for Trigeminal Neuropathic Pain From Perineural Spread of Tumor: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). 2020 Sep 01; 19(3):E304-E305. PMID: 32147730.
      View in: PubMed
    8. Patterson JD, Helton M, Khani M, Sardar S, Thomas K, Galhardo EP, Penagaricano JA, Day JD, Rodriguez A. Neurosurgical management of perineural metastases: A case series and review of the literature. Surg Neurol Int. 2020; 11:206. PMID: 32874709.
      View in: PubMed
    9. Wongsurawat T, Jenjaroenpun P, De Loose A, Alkam D, Ussery DW, Nookaew I, Leung YK, Ho SM, Day JD, Rodriguez A. A novel Cas9-targeted long-read assay for simultaneous detection of IDH1/2 mutations and clinically relevant MGMT methylation in fresh biopsies of diffuse glioma. Acta Neuropathol Commun. 2020 06 20; 8(1):87. PMID: 32563269.
      View in: PubMed
    10. Khani M, Hundley K, Morris TW, Henson JC, Thomas K, Wong KH, Rodriguez A, Day JD. Surgical Treatment of Symptomatic Small Medial Petrous Meningiomas Causing Trigeminal Neuralgia. World Neurosurg. 2020 07; 139:e761-e768. PMID: 32360921.
      View in: PubMed
    11. Rennert RC, Powers MP, Steinberg JA, Fukushima T, Day JD, Khalessi AA, Levy ML. Histology of the vertebral artery-dural junction: relevance to posterolateral approaches to the skull base. J Neurosurg. 2019 Nov 22; 1-6. PMID: 31756706.
      View in: PubMed
    12. Rennert RC, Hoshide R, Calayag M, Kemp J, Gonda DD, Meltzer HS, Fukushima T, Day JD, Levy ML. Extended middle fossa approach to lateralized pontine cavernomas in children. J Neurosurg Pediatr. 2018 04; 21(4):384-388. PMID: 29393814.
      View in: PubMed
    13. Bunch TJ, May HT, Bair TL, Crandall BG, Cutler MJ, Day JD, Jacobs V, Mallender C, Osborn JS, Weiss JP. Five-year impact of catheter ablation for atrial fibrillation in patients with a prior history of stroke. J Cardiovasc Electrophysiol. 2018 02; 29(2):221-226. PMID: 29131434.
      View in: PubMed
    14. Jacobs V, May HT, Bair TL, Crandall BG, Cutler DO MJ, Day JD, Mallender C, Osborn JS, Weiss JP, Bunch TJ. Long-term aspirin does not lower risk of stroke and increases bleeding risk in low-risk atrial fibrillation ablation patients. J Cardiovasc Electrophysiol. 2017 Nov; 28(11):1241-1246. PMID: 28845890.
      View in: PubMed
    15. Lieber BA, Henry JK, Agarwal N, Day JD, Morris TW, Stephens ML, Abla AA. Impact of Surgical Specialty on Outcomes Following Carotid Endarterectomy. Neurosurgery. 2017 02 01; 80(2):217-225. PMID: 28175918.
      View in: PubMed
    16. Weiss JP, May HT, Bair TL, Crandall BG, Cutler MJ, Day JD, Osborn JS, Mallender C, Bunch TJ. A Comparison of Remote Magnetic Irrigated Tip Ablation versus Manual Catheter Irrigated Tip Catheter Ablation With and Without Force Sensing Feedback. J Cardiovasc Electrophysiol. 2016 Mar; 27 Suppl 1:S5-S10. PMID: 26969224.
      View in: PubMed
    17. Bunch TJ, May HT, Bair TL, Jacobs V, Crandall BG, Cutler M, Weiss JP, Mallender C, Osborn JS, Anderson JL, Day JD. The Impact of Age on 5-Year Outcomes After Atrial Fibrillation Catheter Ablation. J Cardiovasc Electrophysiol. 2016 Feb; 27(2):141-6. PMID: 26443666.
      View in: PubMed
    18. Jacobs V, Woller SC, Stevens SM, May HT, Bair TL, Crandall BG, Cutler M, Day JD, Weiss JP, Osborn JS, Mallender C, Anderson JL, Bunch TJ. Percent Time With a Supratherapeutic INR in Atrial Fibrillation Patients Also Using an Antiplatelet Agent Is Associated With Long-Term Risk of Dementia. J Cardiovasc Electrophysiol. 2015 Nov; 26(11):1180-1186. PMID: 26268931.
      View in: PubMed
    19. Steinberg BA, Wehrenberg S, Jackson KP, Hayes DL, Varma N, Powell BD, Day JD, Frazier-Mills CG, Stein KM, Jones PW, Piccini JP. Atrioventricular and ventricular-to-ventricular programming in patients with cardiac resynchronization therapy: results from ALTITUDE. J Interv Card Electrophysiol. 2015 Dec; 44(3):279-87. PMID: 26400764.
      View in: PubMed
    20. Bunch TJ, Day JD. Adverse Remodeling of the Left Atrium in Patients with Atrial Fibrillation: When Is the Tipping Point in Which Structural Changes Become Permanent? J Cardiovasc Electrophysiol. 2015 Jun; 26(6):606-7. PMID: 25827052.
      View in: PubMed
    21. Kanmanthareddy A, Vallakati A, Reddy Yeruva M, Dixit S, DI Biase L, Mansour M, Boolani H, Gunda S, Bunch TJ, Day JD, Ruskin JN, Buddam A, Koripalli S, Bommana S, Natale A, Lakkireddy D. Pulmonary vein isolation for atrial fibrillation in the postpneumonectomy population: a feasibility, safety, and outcomes study. J Cardiovasc Electrophysiol. 2015 Apr; 26(4):385-389. PMID: 25588757.
      View in: PubMed
    22. Bunch TJ, May HT, Bair TL, Jacobs V, Crandall BG, Cutler M, Weiss JP, Mallender C, Osborn JS, Anderson JL, Day JD. Five-year outcomes of catheter ablation in patients with atrial fibrillation and left ventricular systolic dysfunction. J Cardiovasc Electrophysiol. 2015 Apr; 26(4):363-370. PMID: 25534572.
      View in: PubMed
    23. Miller JM, Kowal RC, Swarup V, Daubert JP, Daoud EG, Day JD, Ellenbogen KA, Hummel JD, Baykaner T, Krummen DE, Narayan SM, Reddy VY, Shivkumar K, Steinberg JS, Wheelan KR. Initial independent outcomes from focal impulse and rotor modulation ablation for atrial fibrillation: multicenter FIRM registry. J Cardiovasc Electrophysiol. 2014 Sep; 25(9):921-929. PMID: 24948520.
      View in: PubMed
    24. Bunch TJ, Day JD. The electrophysiologist's new clothes and the cardiac MRI that told the truth. J Cardiovasc Electrophysiol. 2014 May; 25(5):464-465. PMID: 24446789.
      View in: PubMed
    25. Bunch TJ, Weiss JP, Crandall BG, Day JD, May HT, Bair TL, Osborn JS, Mallender C, Fischer A, Brunner KJ, Mahapatra S. Patients treated with catheter ablation for ventricular tachycardia after an ICD shock have lower long-term rates of death and heart failure hospitalization than do patients treated with medical management only. Heart Rhythm. 2014 Apr; 11(4):533-40. PMID: 24333283.
      View in: PubMed
    26. Powell BD, Saxon LA, Boehmer JP, Day JD, Gilliam FR, Heidenreich PA, Jones PW, Rousseau MJ, Hayes DL. Survival after shock therapy in implantable cardioverter-defibrillator and cardiac resynchronization therapy-defibrillator recipients according to rhythm shocked. The ALTITUDE survival by rhythm study. J Am Coll Cardiol. 2013 Oct 29; 62(18):1674-1679. PMID: 23810882.
      View in: PubMed
    27. Diaz Day J. An alternate viewing universe. World Neurosurg. 2013 Nov; 80(5):507-8. PMID: 23541751.
      View in: PubMed
    28. Bunch TJ, Day JD. The atrial fibrillation ablation theory of relativity. J Cardiovasc Electrophysiol. 2013 Mar; 24(3):267-8. PMID: 23339532.
      View in: PubMed
    29. Bunch TJ, May HT, Crandall BG, Weiss JP, Bair TL, Osborn JS, Anderson JL, Muhlestein JB, Lappe DL, Johnson DL, Day JD. Intracardiac ultrasound for esophageal anatomic assessment and localization during left atrial ablation for atrial fibrillation. J Cardiovasc Electrophysiol. 2013 Jan; 24(1):33-9. PMID: 23067340.
      View in: PubMed
    30. Gluth MB, Day JD, Dornhoffer JL. Determining benchmarks in hearing preservation surgery for vestibular schwannoma. J Neurol Surg B Skull Base. 2012 Aug; 73(4):273-80. PMID: 23905004.
      View in: PubMed
    31. Martin DO, Day JD, Lai PY, Murphy AL, Nayak HM, Villareal RP, Weiner S, Kraus SM, Stolen KQ, Gold MR. Atrial support pacing in heart failure: results from the multicenter PEGASUS CRT trial. J Cardiovasc Electrophysiol. 2012 Dec; 23(12):1317-25. PMID: 22830441.
      View in: PubMed
    32. Day JD, Nanda A. Skull base cerebrospinal fluid fistula. Neurosurg Focus. 2012 Jun; 32(6):1 p preceding E1. PMID: 22655698.
      View in: PubMed
    33. Diaz Day J. The middle fossa approach and extended middle fossa approach: technique and operative nuances. Neurosurgery. 2012 Jun; 70(2 Suppl Operative):192-201. PMID: 21904258.
      View in: PubMed
    34. Day JD, Feng DX, Fukushima T. Schmidek & Sweet Operative Neurosurgical Techniques. Tumors Involving the Cavernous Sinus. 2012.
    35. Sullivan RM, Russo AM, Berg KC, Stolen KQ, Seth M, Perschbacher D, Day JD, Olshansky B. Arrhythmia rate distribution and tachyarrhythmia therapy in an ICD population: results from the INTRINSIC RV trial. Heart Rhythm. 2012 Mar; 9(3):351-8. PMID: 22016074.
      View in: PubMed
    36. Bunch TJ, Mahapatra S, Murdock D, Molden J, Weiss JP, May HT, Bair TL, Mader KM, Crandall BG, Day JD, Osborn JS, Muhlestein JB, Lappe DL, Anderson JL. Ranolazine reduces ventricular tachycardia burden and ICD shocks in patients with drug-refractory ICD shocks. Pacing Clin Electrophysiol. 2011 Dec; 34(12):1600-6. PMID: 21895727.
      View in: PubMed
    37. Bunch TJ, Day JD. Achieving favorable very long-term outcomes after catheter ablation for atrial fibrillation: an exciting adventure or delusional quest? J Cardiovasc Electrophysiol. 2011 Nov; 22(11):1215-6. PMID: 21692892.
      View in: PubMed
    38. Gilliam FR, Hayes DL, Boehmer JP, Day J, Heidenreich PA, Seth M, Jones PW, Stein KM, Saxon LA. Real world evaluation of dual-zone ICD and CRT-D programming compared to single-zone programming: the ALTITUDE REDUCES study. J Cardiovasc Electrophysiol. 2011 Sep; 22(9):1023-9. PMID: 21627705.
      View in: PubMed
    39. Bunch TJ, Crandall BG, Weiss JP, May HT, Bair TL, Osborn JS, Anderson JL, Muhlestein JB, Horne BD, Lappe DL, Day JD. Patients treated with catheter ablation for atrial fibrillation have long-term rates of death, stroke, and dementia similar to patients without atrial fibrillation. J Cardiovasc Electrophysiol. 2011 Aug; 22(8):839-45. PMID: 21410581.
      View in: PubMed
    40. Malasana G, Day JD, Weiss JP, Crandall BG, Bair TL, May HT, Osborn JS, Anderson JL, Muhlestein JB, Lappe DL, Nelson J, Bunch TJ. A strategy of rapid cardioversion minimizes the significance of early recurrent atrial tachyarrhythmias after ablation for atrial fibrillation. J Cardiovasc Electrophysiol. 2011 Jul; 22(7):761-6. PMID: 21385263.
      View in: PubMed
    41. Sandesara CM, Sullivan RM, Russo AM, Li W, Kendig A, Day JD, Mullin C, Stolen K, Olshansky B. Older persons with diabetes receive fewer inappropriate ICD shocks: results from the INTRINSIC RV trial. J Cardiovasc Transl Res. 2011 Feb; 4(1):27-34. PMID: 21086086.
      View in: PubMed
    42. Bunch TJ, Weiss JP, Crandall BG, Day JD, DiMarco JP, Ferguson JD, Mason PK, McDaniel G, Osborn JS, Wiggins D, Mahapatra S. Image integration using intracardiac ultrasound and 3D reconstruction for scar mapping and ablation of ventricular tachycardia. J Cardiovasc Electrophysiol. 2010 Jun 01; 21(6):678-84. PMID: 20102427.
      View in: PubMed
    43. Day JD, Feng DX, Fukushima T. Operative Neurosurgical Techniques. Surgical Techniques for Cavernous Sinus Neoplasms. 2010.
    44. Bunch TJ, Day JD. The significance of early atrial tachyarrhythmias after catheter ablation of atrial fibrillation: a matter of time. J Cardiovasc Electrophysiol. 2009 Dec; 20(12):1326-7. PMID: 19758293.
      View in: PubMed
    45. Bunch TJ, Crandall BG, Weiss JP, May HT, Bair TL, Osborn JS, Anderson JL, Lappe DL, Muhlestein JB, Nelson J, Allison S, Foley T, Anderson L, Day JD. Warfarin is not needed in low-risk patients following atrial fibrillation ablation procedures. J Cardiovasc Electrophysiol. 2009 Sep; 20(9):988-93. PMID: 19473299.
      View in: PubMed
    46. Russo AM, Day JD, Stolen K, Mullin CM, Doraiswamy V, Lerew DL, Olshansky B. Implantable cardioverter defibrillators: do women fare worse than men? Gender comparison in the INTRINSIC RV trial. J Cardiovasc Electrophysiol. 2009 Sep; 20(9):973-8. PMID: 19470037.
      View in: PubMed
    47. Bunch TJ, Day JD, Packer DL. Insights into energy delivery to myocardial tissue during radiofrequency ablation through application of the first law of thermodynamics. J Cardiovasc Electrophysiol. 2009 Apr; 20(4):461-5. PMID: 19207754.
      View in: PubMed
    48. Bunch TJ, Day JD, Olshansky B, Stolen KQ, Mullin CM. Newly detected atrial fibrillation in patients with an implantable cardioverter-defibrillator is a strong risk marker of increased mortality. Heart Rhythm. 2009 Jan; 6(1):2-8. PMID: 18996055.
      View in: PubMed
    49. Day JD, Yoo A, Muckle R. Pigmented Villonodular Synovitis of the Temporomandibular Joint: A Rare Tumor of the Temporal Skull Base. Journal of Neurosurgery. 2008; 109:140-143.
    50. Day JD. Minimally Invasive Surgical Closure of a Spinal Dural Arteriovenous Fistula. Minimally Invasive Neurosurgery. 2008; 51:183-186.
    51. Zada G, Day JD, Giannotta SL. The extradural temporopolar approach: a review of indications and operative technique. Neurosurg Focus. 2008; 25(6):3-3.
    52. Bunch TJ, Day JD. The diagnostic evolution of the cardiac implantable electronic device: the implantable monitor of ischemia. J Cardiovasc Electrophysiol. 2008 Mar; 19(3):282-4. PMID: 18179524.
      View in: PubMed
    53. Day JD. Anatomy and Surgical Approaches of the Temporal Bone and Adjacent Areas. Neurosurgery. 2007; 61(4):S4-3-S4-3.
    54. Day JD. Suprapetrosal Craniotomy. J Neurosurg. 2007; 107(4):899-900.
    55. Day JD, Doshi RN, Belott P, Birgersdotter-Green U, Behboodikhah M, Ott P, Glatter KA, Tobias S, Frumin H, Lee BK, Merillat J, Wiener I, Wang S, Grogin H, Chun S, Patrawalla R, Crandall B, Osborn JS, Weiss JP, Lappe DL, Neuman S. Inductionless or limited shock testing is possible in most patients with implantable cardioverter- defibrillators/cardiac resynchronization therapy defibrillators: results of the multicenter ASSURE Study (Arrhythmia Single Shock Defibrillation Threshold Testing Versus Upper Limit of Vulnerability: Risk Reduction Evaluation With Implantable Cardioverter-Defibrillator Implantations). Circulation. 2007 May 08; 115(18):2382-9. PMID: 17470697.
      View in: PubMed
    56. Bunch TJ, Day JD. Unraveling the mysteries of catheter ablation for atrial fibrillation: from clinical observations to mechanistic explorations. J Cardiovasc Electrophysiol. 2007 Mar; 18(3):266-8. PMID: 17284285.
      View in: PubMed
    57. Day JD. Neurosurgical Operative Atlas. Surgical Management of Trigeminal Schwannomas. 2007.
    58. Olshansky B, Day JD, Moore S, Gering L, Rosenbaum M, McGuire M, Brown S, Lerew DR. Is dual-chamber programming inferior to single-chamber programming in an implantable cardioverter-defibrillator? Results of the INTRINSIC RV (Inhibition of Unnecessary RV Pacing With AVSH in ICDs) study. Circulation. 2007 Jan 02; 115(1):9-16. PMID: 17179021.
      View in: PubMed
    59. Bunch TJ, Day JD. Right meets left: a common mechanism underlying right and left ventricular outflow tract tachycardias. J Cardiovasc Electrophysiol. 2006 Oct; 17(10):1059-61. PMID: 16989647.
      View in: PubMed
    60. Bunch TJ, Nelson J, Foley T, Allison S, Crandall BG, Osborn JS, Weiss JP, Anderson JL, Nielsen P, Anderson L, Lappe DL, Day JD. Temporary esophageal stenting allows healing of esophageal perforations following atrial fibrillation ablation procedures. J Cardiovasc Electrophysiol. 2006 Apr; 17(4):435-9. PMID: 16643370.
      View in: PubMed
    61. Day JD. The Middle Fossa Approach for Acoustic Neuroma: Hearing Preservation. Neurosurgery. 1999; 696.
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