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P. Varelas · SciRah

Researcher profile · Semantic Scholar

P. Varelas

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P. Varelas — researcher profile on SciRah

h-index: 36
Works: 204
Citations: 5,206

Most-cited papers

Determination of Brain Death/Death by Neurologic Criteria: The World Brain Death Project.
D. Greer, S. Shemie, Ariane Lewis, Sylvia Torrance +41 more
2020Journal of the American Medical Association (JAMA)538 citations
Semantic Scholar
Guidelines for Neuroprognostication in Comatose Adult Survivors of Cardiac Arrest
V. Rajajee, S. Muehlschlegel, K. Wartenberg, S. Alexander +17 more
2023Neurocritical Care192 citations Open access
Semantic Scholar
Variability of Brain Death Policies in the United States.
D. Greer, Hilary H. Wang, Jennifer D Robinson, P. Varelas +2 more
2016JAMA Neurology169 citations
Semantic Scholar
Successful Reperfusion with Intravenous Thrombolysis Preceding Mechanical Thrombectomy in Large Vessel Occlusions
G. Tsivgoulis, A. Katsanos, P. Schellinger, M. Köhrmann +7 more
2017Stroke158 citations Open access
Semantic Scholar
Pediatric and Adult Brain Death/Death by Neurologic Criteria Consensus Guideline: Report of the AAN Guidelines Subcommittee, AAP, CNS, and SCCM.
David M. Greer, M. Kirschen, Ariane Lewis, G. S. Gronseth +16 more
2023Neurology127 citations
Semantic Scholar
Neuroleptic Malignant Syndrome: Complications, Outcomes, and Mortality
Sumul Modi, D. Dharaiya, L. Schultz, P. Varelas
2016Neurocritical Care108 citations
Semantic Scholar
Direct oral anticoagulant– vs vitamin K antagonist–related nontraumatic intracerebral hemorrhage
G. Tsivgoulis, V. Lioutas, P. Varelas, A. Katsanos +25 more
2017Neurology80 citations
Semantic Scholar
Organ support after death by neurologic criteria
Ariane Lewis, Nellie Adams, P. Varelas, D. Greer +1 more
2016Neurology80 citations
Semantic Scholar
Guidelines for Neuroprognostication in Critically Ill Adults with Moderate–Severe Traumatic Brain Injury
S. Muehlschlegel, V. Rajajee, Katja E. Wartenberg, Sheila A. Alexander +14 more
2024Neurocritical Care67 citations Open access
Semantic Scholar
Neuroimaging and clinical outcomes of oral anticoagulant–associated intracerebral hemorrhage
G. Tsivgoulis, D. Wilson, A. Katsanos, J. Sargento-Freitas +56 more
2018Annals of Neurology64 citations Open access
Semantic Scholar
Gap Analysis Regarding Prognostication in Neurocritical Care: A Joint Statement from the German Neurocritical Care Society and the Neurocritical Care Society
Katja E. Wartenberg, D. Hwang, K. Haeusler, S. Muehlschlegel +8 more
2019Neurocritical Care60 citations Open access
Semantic Scholar
Burden of herpes simplex virus encephalitis in the United States
Sumul Modi, A. Mahajan, D. Dharaiya, P. Varelas +1 more
2017Journal of Neurology59 citations
Semantic Scholar
Status Epilepticus, Refractory Status Epilepticus, and Super-refractory Status Epilepticus
Sarah E. Nelson, P. Varelas
2018Continuum53 citations
Semantic Scholar
Guidelines for Neuroprognostication in Critically Ill Adults with Intracerebral Hemorrhage
David Y. Hwang, Keri S. Kim, S. Muehlschlegel, Katja E. Wartenberg +14 more
2023Neurocritical Care51 citations Open access
Semantic Scholar
Neurocritical Care Outcomes, Research, and Technology: A Review
K. M. Busl, T. Bleck, P. Varelas
2019JAMA Neurology49 citations
Semantic Scholar
Guidelines for Neuroprognostication in Adults with Guillain–Barré Syndrome
Katharina M. Busl, Herbert Fried, S. Muehlschlegel, K. Wartenberg +15 more
2023Neurocritical Care41 citations Open access
Semantic Scholar
Apnea Testing for the Determination of Brain Death: A Systematic Scoping Review
Katharina M. Busl, Ariane Lewis, P. Varelas
2020Neurocritical Care41 citations Open access
Semantic Scholar
Improving uniformity in brain death determination policies over time
Hilary H. Wang, P. Varelas, G. Henderson, E. Wijdicks +1 more
2017Neurology39 citations Open access
Semantic Scholar
Prolonging Support After Brain Death: When Families Ask for More
Ariane Lewis, P. Varelas, D. Greer
2016Neurocritical Care37 citations
Semantic Scholar
Primary Posterior Fossa Lesions and Preserved Supratentorial Cerebral Blood Flow: Implications for Brain Death Determination
P. Varelas, P. Brady, Mohammed F. Rehman, Arash Afshinnik +3 more
2017Neurocritical Care36 citations
Semantic Scholar
Imaging of Cerebrovascular Disease in Pregnancy and the Puerperium.
L. Hacein-Bey, P. Varelas, J. L. Ulmer, L. Mark +2 more
2016AJR. American journal of roentgenology36 citations
Semantic Scholar
Cost of hospitalization for aneurysmal subarachnoid hemorrhage in the United States.
Sumul Modi, K. Shah, L. Schultz, R. Tahir +2 more
2019Clinical neurology and neurosurgery (Dutch-Flemish ed. Print)31 citations
Semantic Scholar
Surrogate Decision Makers' Perspectives on Family Members' Prognosis after Intracerebral Hemorrhage
D. Zahuranec, R. Anspach, M. Roney, A. Fuhrel-Forbis +6 more
2018Journal of Palliative Medicine31 citations Open access
Semantic Scholar
Guidelines for neuroprognostication in adults with traumatic spinal cord injury
Dea Mahanes, S. Muehlschlegel, Katja E. Wartenberg, V. Rajajee +14 more
2023Neurocritical Care30 citations Open access
Semantic Scholar
Pregnancy and Brain Death: Lack of Guidance in U.S. Hospital Policies
Ariane Lewis, P. Varelas, D. Greer
2016American Journal of Perinatology26 citations
Semantic Scholar
Clinical outcomes and neuroimaging profiles in non-disabled patients with anticoagulant-related intracerebral hemorrhage
V. Lioutas, N. Goyal, A. Katsanos, C. Krogias +21 more
2018Stroke24 citations Open access
Semantic Scholar
Electrographic Seizures in Patients with Acute Encephalitis
T. Viarasilpa, N. Panyavachiraporn, Gamaleldin Osman, Christopher M. Parres +3 more
2018Neurocritical Care21 citations
Semantic Scholar
Endocannabinoid System of the Blood–Brain Barrier: Current Understandings and Therapeutic Potentials
Kofi Hagan, P. Varelas, Hai-An Zheng
2021Cannabis and Cannabinoid Research20 citations Open access
Semantic Scholar
Factors that affect consent rate for organ donation after brain death: A 12-year registry.
Mohammed F. Kananeh, P. Brady, Chandan B. Mehta, Lisa Louchart +4 more
2020Journal of Neurological Sciences19 citations
Semantic Scholar
Microbleed prevalence and burden in anticoagulant‐associated intracerebral bleed
V. Lioutas, N. Goyal, A. Katsanos, C. Krogias +17 more
2019Annals of Clinical and Translational Neurology19 citations Open access
Semantic Scholar
Brain Death in Patients With "Isolated" Brainstem Lesions: A Case Against Controversy.
A. Manara, P. Varelas, E. Wijdicks
2018Journal of Neurosurgical Anesthesiology15 citations
Semantic Scholar
Brainstem or entire brain-based declaration of death: is there a difference?
P. Varelas
2016Practical Neurology15 citations
Semantic Scholar
Neuroemergencies in South America: How to Fill in the Gaps?
G. S. Silva, Nelson J. Maldonado, J. Mejia-Mantilla, Santiago Ortega-Gutierrez +3 more
2019Neurocritical Care11 citations
Semantic Scholar
Neurologic Complications in Pregnancy.
Mauricio Ruiz Cuero, P. Varelas
2016Critical care clinics11 citations
Semantic Scholar
Comparison of 1 vs 2 Brain Death Examinations on Time to Death Pronouncement and Organ Donation
P. Varelas, Mohammed F. Rehman, Chandan B. Mehta, Lisa Louchart +4 more
2021Neurology10 citations
Semantic Scholar
What to Look for on Post-stroke Neuroimaging.
A. Katramados, L. Hacein-Bey, P. Varelas
2018Neuroimaging clinics of North America10 citations
Semantic Scholar
Controversies After Brain Death: When Families Ask for More.
Ariane Lewis, P. Varelas, D. Greer
2016Chest10 citations Open access
Semantic Scholar
Rationale and Design for the BLOCK-SAH Study (Pterygopalatine Fossa Block as an Opioid-Sparing Treatment for Acute Headache in Aneurysmal Subarachnoid Hemorrhage): A Phase II, Multicenter, Randomized, Double-Blinded, Placebo-Controlled Clinical Trial with a Sequential Parallel Comparison Design
Katharina M. Busl, Cameron R. Smith, Andrea B. Troxel, M. Fava +155 more
2024Neurocritical Care8 citations Open access
Semantic Scholar
Beyond the Final Heartbeat: Neurological Perspectives on Normothermic Regional Perfusion for Organ Donation after Circulatory Death
M. Kirschen, Ariane Lewis, Michael A. Rubin, P. Varelas +1 more
2024Annals of Neurology8 citations Open access
Semantic Scholar
Intrathecal Nicardipine After Aneurysmal Subarachnoid Hemorrhage: A Scoping Review
Jared F. Sweeney, John Y. Chen, B. Darwish, Devin Holden +2 more
2024Neurocritical Care7 citations
Semantic Scholar
The Relationship Between Manifestation of Diabetes Insipidus and Estimated Glomerular Filtration Rate in Brain Death
P. Varelas, Mohammed F. Kananeh, P. Brady, Devin Holden +5 more
2023Critical Care Medicine7 citations
Semantic Scholar
Must Hypothalamic Neurosecretory Function Cease for Brain Death Determination? No
P. Varelas
2023Neurology6 citations Open access
Semantic Scholar
Metabolic values precluding clinical death by neurologic Criteria/Brain death: Survey of neurocritical care society physicians.
David P. Lerner, Ribal Bassil, A. Tadevosyan, Anil Ramineni +4 more
2021Journal of clinical neuroscience6 citations
Semantic Scholar
The prognostic utility of ICH-score in anticoagulant related intracerebral hemorrhage.
A. Katsanos, C. Krogias, V. Lioutas, N. Goyal +19 more
2019Journal of Neurological Sciences5 citations
Semantic Scholar
749: CHARACTERISTICS OF PATIENTS INTUBATED FOR PSYCHOGENIC NONEPILEPTIC SEIZURES
S. Mayer, T. Viarasilpa, N. Panyavachiraporn, Gamaleldin Osman +2 more
2019Critical Care Medicine5 citations
Semantic Scholar
Magnesium and Hydrogen in Subarachnoid Hemorrhage: Is Neuroprotection Finally a Reality?
Colum F. Amory, P. Varelas
2020Stroke4 citations Open access
Semantic Scholar
Neurological determination of death in isolated brainstem lesions: A case report to highlight the issues involved
A. Manara, P. Varelas, Martin Smith
2020Journal of the Intensive Care Society4 citations Open access
Semantic Scholar
Guidelines for Family-Centered Care in Neuro-ICU Populations: Caveats for Routine Palliative Care.
M. Torbey, G. Brophy, P. Varelas, J. Bösel +5 more
2017Critical Care Medicine4 citations
Semantic Scholar
Ischemic Stroke, Hyperperfusion Syndrome, Cerebral Sinus Thrombosis, and Critical Care Seizures
P. Varelas, L. Hacein-Bey
20174 citations
Semantic Scholar
Longitudinal Improvement in Respiratory Function Following Plasma Exchange in Patients with Severe Myasthenia Gravis
P. Varelas, Ileana Lopez-Plaza, Ashar Ata, Mohammed F. Rehman +3 more
2025Neurocritical Care3 citations
Semantic Scholar

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Ariane Lewis×8
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Chandan B. Mehta×8
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Katharina M. Busl×7
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S. Muehlschlegel

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P. Mitsias — researcher profile on SciRah

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