PubMed copyright CEREBROVASCULAR DISEASE & STROKE Google Scholar
JOURNAL PUBLICATIONS
  1. Brito A, Cruz‑Criollo L, Galecio‑Castillo M, Cano Nigenda V, Kalakoti P, Rodriguez‑Calienes A, Abdelhakim N, Cespedes J, Mercado A, Mohr NM, Shaban A, Huynh J, Pereda‑Castillo A, Serrano Arias F, Smith BJ, Torner JC, Barboza MA, Arauz A, Ortega‑Gutierrez S. Early cerebral edema subtypes and functional outcome in patients with cerebral venous thrombosis: insights from the CLOT‑VENUS Registry. Neurology 2026 Jul 28;107(2):e218259. doi: 10.1212/WNL.0000000000218259. Epub 2026 Jun 25. PMID:42348805 External Link
  2. Cruz‑Criollo L, Galecio‑Castillo M, Rodriguez‑Calienes A, Kalakoti P, Cano‑Nigenda V, Brito A, Barboza M, Gao J, Mercado A, Pereda A, Lefkowitz J, Cespedes J, Abdelhakim N, Zheng‑Lin B, Shaban A, Smith BJ, Mohr NM, Arauz‑Gongora A, Ortega‑Gutierrez S. Early inflammatory biomarkers associated to functional outcomes in acute cerebral venous thrombosis: CLOT‑VENUS substudy. Stroke 2026 Apr 22. doi: 10.1161/STROKEAHA.125.052774. Online ahead of print. PMID:42017277 External Link
  3. Abdelhakim N, Galecio-Castillo M, Kalakoti P, Cruz-Criollo L, Rodriguez-Calienes A, Brito A, Cespedes J, Shaban A, Venkatesan A, Cano Nigenda V, Mercado Pompa AA, Mohr NM, Pereda‑Castillo A, Enríquez Peregrino K, Valdez Ruvalcaba H, Smith BJ, Torner JC, Barboza MA, Arauz A, Ortega-Gutierrez S. Cytotoxic edema and intra-parenchymal hemorrhage: a mediated pathway to mortality and functional outcome in cerebral venous sinus thrombosis: a sub-analysis of the CLOT-VENUS registry. Translational Stroke Research 2026;17(2):41. PMID:41975110 External Link
  4. Galecio‐Castillo M, Farooqui M, Hassan AE, Jumaa MA, Divani AA, Ribo M, Abraham M, Petersen NH, Fifi JT, Guerrero WR, Malik AM, Nguyen TN, Sheth SA, Yoo AJ, Linares G, Janjua N, Dubinsky M, Quispe‐Orozco D, Tekle W, Zaidi SF, Sabbagh SY, Olive‐Gadea M, Barkley T, De Leacy RA, Abdalkader M, Salazar‐Marioni S, Soomro J, Gordon W, Turabova C, Cruz‐Criollo L, Kalakoti P, Mokin M, Yavagal DR, Jovin TG, Ortega‐Gutierrez S. Effect of the Cervical Lesion Severity on Procedural and Clinical Outcomes after Endovascular Treatment of Acute Tandem Lesions: A Multicenter Study. Stroke: Vascular and Interventional Neurology 2025;5(4):e001598. PMID:41573705 External Link
  5. Rallo MS, Akel O, Kalakoti P, Sun H. Characteristics and Outcomes of Stroke Hospitalizations in Patients with Sickle Cell Disease and Moyamoya Syndrome. Journal of Stroke and Cerebrovascular Diseases 2022;31(10):106705. PMID:35964532 External Link
  6. Vourla E, Filis A, Cornelius JF, Bostelmann R, Turowski B, Kalakoti P, Rubbert C, Suresh MP, Tortora A, Steiger HJ, Petridis AK. Natural History of De Novo Aneurysm Formation in Patients with Treated Aneurysmatic Subarachnoid Hemorrhage: A Ten-Year Follow-Up. World Neurosurgery 2019;122:e291-e295. PMID:30321678 External Link
  7. Nanda A, Patra DP, Bir SC, Maiti TK, Kalakoti P, Bollam P. Microsurgical Clipping of Unruptured Intracranial Aneurysms: A Single Surgeon’s Experience over 16 Years. World Neurosurgery 2017;100(4):85-99. PMID:28057589 External Link
  8. Patra DP, Bir SC, Maiti TK, Kalakoti P, Cuellar-Saenz HH, Guthikonda B, Sun H, Nanda A. Superior Cerebellar Artery Aneurysms, the “Sui Generis” in Posterior Circulation: The Role of Microsurgery in the Endovascular Era. World Neurosurgery 2016;94(10):229-238. PMID:27422685 External Link
  9. Ahmed O, Kalakoti P, Menger R, Brown B, Shihao Z, Guthikonda B, Cuellar-Saenz HH. Accuracy of CT Angiography in Detection of Blood Supply Dominance of Posterior Cerebral Artery in Patients with Posterior Communicating Artery Aneurysms. Neuroradiolology Journal 2015;28(6):598-603. PMID:26515748 External Link
  10. Ahmed O, Kalakoti P, Hefner M, Cuellar H, Guthikonda B. Seven Intracranial Aneurysms in One Patient: Treatment and Review of Literature. The Journal of Cerebrovascular and Endovascular Neurosurgery 2015;17(2):113-119. PMID:26157691 External Link
  11. Kalakoti P, Bir SC, Murray RD, Ahmed O, Nanda A. Technical Nuances of Clipping a Middle Cerebral Artery Bifurcation Aneurysm. Neurosurgical Focus 2015;39(Video Suppl 1):V2. PMID:26132618 External Link
  12. Ahmed O, Storey C, Kalakoti P, Thakur JD, Zhang S, Nanda A, Guthikonda B, Cuellar H. Treatment of Vertebrobasilar Fusiform aneurysms with Pipeline Embolization Device. Interventional Neuroradiology 2015;21(4):343-440. PMID:26089246 External Link
  13. Kalakoti P, Murray RD, Bir SC, Ahmed O, Nanda A. Microsurgical Clipping Following Failed Coiling of a Giant Ophthalmic Aneurysm. Neurosurgical Focus 2015;38(VideoSuppl1):Video16. PMID:25554838 External Link
  14. Kishve PS, Kishve SP, Joshi M, Syed MMA, Kalakoti P. An Unusual Branching Pattern of Common and External Carotid Artery in a Human Cadaver: A Case Report. Australasian Medical Journal 2011;4(4):180-2. PMID:23393509 External Link
CONFERENCE ABSTRACTS
  1. Ortega-Gutierrez S, Galecio-Castillo M, Kalakoti P, Cespedes J, Cruz-Criollo L, Brito A, Viele K, Vestrucci M, Sheith SA, Jovin TG, Ribo M. Endovascular Therapy for Late Window Ischemic Stroke Patients Selected by Automatic Plain Computerized Tomography (DONE SYMPLE) Trial. Society of Vascular and Interventional Neurology [SVIN] Annual Meeting, San Diego, CA: November 2024.
  2. Ortega-Gutierrez S, Kalakoti P, Mohr N, Galecio-Castillo M, Cespedes J, Cruz-Criollo L, Brito A, Samaniego E, Brown S, Sheth SA, Jovin TG. Delay Avoiding Primary Evaluation For Thrombectomy For Acute Stroke Patients With Large Vessel Occlusion In The Angiography Suite (DIRECT) Trial. Society of Vascular and Interventional Neurology [SVIN] Annual Meeting, San Diego, CA: November 2024.
  3. Kalakoti P, Murray RD, Bir S, Ahmed O, Bollam P, Nanda A. The Role of Anterior Circulation Patterns in Protecting from the Detrimental Effect of Vasospasm After Aneurysmal SAH due to Anterior Communicating Artery Rupture. North American Skull Base Society [NASBS] 25th Annual Meeting, Tampa, FL: February 2015.
  4. Ahmed O, Storey C, Kalakoti P, Thakur J, Zhang S, Nanda A, Guthikonda B, Cuellar H. Treatment of Vertebrobasilar Fusiform Aneurysms with Pipeline Embolization Device: long-term follow-up. Louisiana Neurosurgical Society [LANS] 40th Annual Meeting, New Orleans, LA: January 2015.
  5. Ahmed O, Menger R, Brown B, Kalakoti P, Zhang S, Nanda A, Guthikonda B, Cuellar H. Accuracy of CT Angiography in Predicting Fetal Origin of Posterior Cerebral Artery. Louisiana Neurosurgical Society [LANS] 40th Annual Meeting, New Orleans, LA: January 2015.
  6. Cruz-Criollo L, Kalakoti P, Galecio-Castillo M, Brito A, Rodriguez-Calienes A, Lefkowitz J, Cespedes J, Abdelhakim N, Cano Nigenda V, Mercado Pompa, AA, Pereda-Castillo A, Arauz Gongora A, Ortega-Gutierrez S. Association of Early Inflammatory Biomakers at Admission with long-term functional outcome in acute cerebral venous sinus thrombosis. European Stroke Organization Conference [ESOC] Annual Meeting, Helsinki, Finland: May 2025.
  7. Abdelhakim N, Galecio-Castillo M, Kalakoti P, Cruz-Criollo L, Rodriguez-Calienes A, Brito A, Lefkowitz J, Cespedes J, Shaban A, Cano-Nigenda V, Mercado A, Arauz A, Ortega-Gutierrez S. Cytotoxic Edema and Intracranial Hemorrhage: A Mediated Pathway to Mortality in Cerebral Venous Sinus Thrombosis. European Stroke Organization Conference [ESOC] Annual Meeting, Helsinki, Finland: May 2025.
  8. Galecio-Castillo M, Shogren S, Olexa M, Begunova Y, Cruz-Criollo L, Kalakoti P, Brito-Alvarado A, Petersen N, Ortega Gutierrez S. Elevated Pre-hospital Blood Pressure is Associated with Reduced Infarct Volume in Large Vessel Occlusion Ischemic Strokes American Academy of Neurology [AAN] Annual Meeting, San Diego, LA: April 2025.
  9. Huynh J, Brito-Alvarado A, Cruz-Criollo L, Galecio-Castillo M, Kalakoti P, Geyik S, Ortega-Gutierrez S, Bajrami A. Safety and Efficacy of Endovascular Interventions for Chronic Carotid Artery Occlusion: A Multi-Center Case Series. American Academy of Neurology [AAN] Annual Meeting, San Diego, LA: April 2025.
  10. Cruz-Criollo L, Galecio-Castillo M, Brito-Alvarado A, Kalakoti P, Huynh J, Ortega-Gutierrez S. Unexpected Neurological Outcomes After Successful Mechanical Thrombectomy in Acute Ischemic Stroke: ASPECTS Decay. American Academy of Neurology [AAN] Annual Meeting, San Diego, LA: April 2025.
  11. Galecio-Castillo M, Shogren SL, Begunova L, Olexa M, Kalakoti P, Cruz-Criollo L, Petersen N, Ortega-Gutierrez S. Higher Pre-Admission Blood Pressure Is Associated with Lower Initial Infarct Volume After Acute Large Vessel Occlusions. International Stroke Conference [ISC] Annual Meeting, Los Angeles, CA: February 2025.
  12. Galecio-Castillo M, Bajrami A, Krug R, Cruz-Criollo L, Kalakoti P, Geyik S, Ortega-Gutierrez S. Circle of Willis Arterial Size is Associated with Symptomatic Status in Chronic Carotid Occlusions. International Stroke Conference [ISC] Annual Meeting, Los Angeles, CA: February 2025.
  13. Kalakoti P, Cruz-Criollo L, Rodriguez-Calienes A, Gao J, Galecio-Castillo M, Mohr N, Nigenda V, Mercado A, Huynh J, Manazir A, Venkatesan A, Arauz A, Ortega-Gutierrez S. Impact of Edema Subtypes on Outcomes in Cerebral Venous Sinus Thrombosis: Definitions and Prognostic Implications. Society of Vascular and Interventional Neurology [SVIN] Annual Meeting, San Diego, CA: November 2024.
  14. Cruz-Criollo L, Kalakoti P, Galecio-Castillo M, Gao J, Rodriguez-Calienes A, Mohr N, Nigenda VC, Mercado A, Huynh J, Manazir A, Venkatesan A, Arauz A, Ortega-Gutiérrez S. Association of Blood-Based Biomarkers with Functional Outcomes in Cerebral Venous Sinus Thrombosis. Society of Vascular and Interventional Neurology [SVIN] Annual Meeting, San Diego, CA: November 2024.
  15. Galecio-Castillo M, Bajrami A, Krug R, Cruz-Criollo L, Kalakoti P, Geyik S, Ortega-Gutierrez S. Circle of Willis Arterial Size is Associated with Symptomatic Status in Chronic Carotid Occlusions. Society of Vascular and Interventional Neurology [SVIN] Annual Meeting, San Diego, CA: November 2024.
  16. Kalakoti P, Sharma K, Patra D, Dossani R, Bollam P, Sun H, Guthikonda B, Nanda A. Continuity of care and 30-day all cause readmission following cerebral aneurysm treatment. American Association of Neurological Surgeons [AANS] 85th Annual Meeting, Los Angeles, CA: April 2017.
  17. Patra DP, Bir S, Maiti T, Kalakoti P, Bollam P, Nanda A. Microsurgical Treatment of Unruptured Intracranial Aneurysms: A Single Surgeons Perspective Over a Period of 16 Years. American Association of Neurological Surgeons [AANS] 85th Annual Meeting, Los Angeles, CA: April 2017.
  18. Patra DP, Kalakoti P, Bir S, Maiti T, Guthikonda B, Nanda A. Single Stage Microsurgical Clipping of Multiple Intracranial Aneurysms: Feasibility and Outcome Analysis. American Association of Neurological Surgeons [AANS] 85th Annual Meeting, Los Angeles, CA: April 2017.
  19. Patra DP, Bir S, Kalakoti P, Maiti T, Guthikonda B, Cuellar-Saenz H, Sun H, Nanda A. Fusiform Aneurysms of the Posterior Circulation: Difference in Presentation and Overall Outcome with Extent of involvement. American Association of Neurological Surgeons [AANS] 85th Annual Meeting, Los Angeles, CA: April 2017.
  20. Bir SC, Maiti TK, Patra DP, Kalakoti P, Nanda A, Sun H. Analysis of Practice Pattern and Outcomes of Aneurysm Treatment Since 2010 at LSU Shreveport. Congress of Neurological Surgeons [CNS] Annual Meeting, San Diego, CA: September 2016.
  21. Hanif R, Maiti TK, Kalakoti P, Cuellar H, Nanda A. Comparison of Total Hospitalization Cost Between Pipeline Stenting and Clipping of Unruptured Ophthalmic Aneurysms. Congress of Neurological Surgeons [CNS] Annual Meeting, San Diego, CA: September 2016.
  22. Maiti TK, Bir S, Nanda A, Kalakoti P, Bollam P. Alfred J Luessenhop and the Dawn of a New Superspecialty: Endovascular Neurosurgery. American Association of Neurological Surgeons [AANS] 83th Annual Meeting, Washington, DC: May 2015.
  23. Ahmed OI, Storey C, Kalakoti P, Thakur J, Zhang S, Nanda A, Guthikonda B, Cuellar H. Treatment of Vertebrobasilar Fusiform Aneurysms with Pipeline Embolization Device: long-term follow-up. American Association of Neurological Surgeons [AANS] 83th Annual Meeting, Washington, DC: May 2015.
  24. Kalakoti P, Ahmed O, Menger R, Murray R, Bir SC, David C, Nanda A. Heterotrophic Ossification of a Pre-Pontine Mass: Idiopathic or Following Stroke? North American Skull Base Society [NASBS] 25th Annual Meeting, Tampa, FL: February 2015.
  25. Ahmed O, Kalakoti P, Hefner M, Nanda A, Cuellar H, Guthikonda G. Dual Treatment Modality of Surgical Clipping and Endovascular Coiling in Patient with 7 Intracranial Aneurysms: A Case Report. North American Skull Base Society [NASBS] 25th Annual Meeting, Tampa, FL: February 2015.
FUNDING SUPPORT
2024 ─ 2025
Delay AvoIding Primary Evaluation for ThRombectomy of Acute StrokE Patients with Large Vessel OCclusion in the Angiography SuiTe (DIRECT)
Investigators: S. Ortega, T.G. Jovin, and N. Mohr
Role: Program Manager/Key Personnel
Funding: Patient-Centered Outcomes Research Institute (PCORI)