ThomasMartinHemmenMD

Neurology • La Jolla, CA

Vascular Neurology

Professor of Neurosciences

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Office
9500 Gilman Dr
La Jolla, CA 92093
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Education & Training

New York Presbyterian Hospital (Cornell Campus)Residency, Neurology, 1997 - 2000
Freie University Berlin Faculty of MedicineClass of 1996

Certifications & Licensure

CA State Medical License 2000 - 2024
American Board of Psychiatry and Neurology Neurology
American Board of Psychiatry and Neurology Vascular Neurology

Awards, Honors, & Recognition

CMS Meaningful Use Stage 1 Certification EpicCare Ambulatory EMR, Epic Systems Corporation, 2013

Clinical Trials

The Intravascular Cooling in the Treatment of Stroke 2/3 Trial Start of enrollment: 2010 Jun 01
Terminated
Phase 2, Phase 3
Study for the Use of Alteplase in Patients Who Awaken With Stroke Start of enrollment: 2011 Aug 01
Withdrawn
Phase 1
Hypothermia in Acute Stroke With Thrombolysis Imaging Evaluation of Revascularization Start of enrollment: 2013 Feb 01
Terminated
Phase 2, Phase 3

Publications & Presentations

PubMed

Statin treatment intensity and cerebral vasomotor reactivity response in patients with ischemic stroke.
Amirhossein Akhavan Sigari, Dawn Meyer, Reza Bavarsad Shahripour, Behnam Sabayan, Royya Modir, Brett C Meyer, Thomas Hemmen> ;Journal of Neuroimaging. 2024 Apr 8
2 citations
Ransomware Attack Associated With Disruptions at Adjacent Emergency Departments in the US.
Christian Dameff, Jeffrey Tully, Theodore C Chan, Edward M Castillo, Stefan Savage, Patricia Maysent, Thomas M Hemmen, Brian J Clay, Christopher A Longhurst> ;JAMA Network Open. 2023 May 1
11 citations
Transcranial Doppler to evaluate postreperfusion therapy following acute ischemic stroke: A literature review.
Reza Bavarsad Shahripour, M. Reza Azarpazhooh, Humayon Akhuanzada, Edward Labin, Afshin Borhani-Haghighi, Kunal Agrawal, Dawn M Meyer, Brett C. Meyer, Thomas M. Hemmen> ;Journal of Neuroimaging. 2021 Jun 15
Clinical and Demographic Factors Influence Clinical Trial Enrollment.
Daniel J. Suto, Emily Perrinez, Karen Rapp, Mohammed Nabulsi, Thomas M. Hemmen> ;Journal of Stroke and Cerebrovascular Diseases. 2021 Apr 14
18 citations
Evolving Healthcare Delivery in Neurology During the Coronavirus Disease 2019 (COVID-19) Pandemic
Patrick M. Chen, Thomas M. Hemmen> ;Frontiers in Neurology. 2020 May 29
20 citations
A Stroke Care Model at an Academic, Comprehensive Stroke Center During the 2020 COVID-19 Pandemic.
Dawn M Meyer, Brett C. Meyer, Royya Modir, Kunal Agrawal, Lovella Hailey, Melissa Mortin, Richard Lane, Tamra Ranasinghe, Brian Sorace, Tara von Kleist, Emily Perrinez...> ;Journal of Stroke and Cerebrovascular Diseases. 2020 Aug 1
3 citations
Timing of symptomatic intracerebral hemorrhage after rt-PA treatment in ischemic stroke.
Patrick M. Chen, Brittney Lehmann, Brett C. Meyer, Karen Rapp, Thomas M. Hemmen, Royya Modir, Kunal Agrawal, Lovella Hailey, Melissa Mortin, Dawn M Meyer> ;Neurology. Clinical Practice. 2019 Aug 1
1 citations
Mapping a Reliable Stroke Onset Time Course Using Signal Intensity on DWI Scans.
Michael M Chen, Patrick M. Chen, Lovella Hailey, Melissa Mortin, Karen Rapp, Kunal Agrawal, Branko Huisa, Royya Modir, Dawn M Meyer, Thomas M. Hemmen, Brett C. Meyer> ;Journal of Neuroimaging. 2019 Jul 1
7 citations
Outcome After Clipping and Coiling for Aneurysmal Subarachnoid Hemorrhage in Clinical Practice in Europe, USA, and Australia.
Antti Lindgren, Ellie Bragan Turner, Tomas Sillekens, Atte Meretoja, Jin-Moo Lee, Thomas M Hemmen, Timo Koivisto, Mark Alberts, Robin Lemmens, Juha E Jääskeläinen, Mer...> ;Neurosurgery. 2019 May 1
11 citations
Hospital case-volume is associated with case-fatality after aneurysmal subarachnoid hemorrhage:
Antti E. Lindgren, Sarah Burt, Ellie Bragan Turner, Atte Meretoja, Jin-Moo Lee, Thomas M. Hemmen, Mark J. Alberts, Robin Lemmens, Mervyn D.I. Vergouwen, Gabriel J.E. R...> ;International Journal of Stroke. 2019 Apr 1
3 citations
The Sustained DeyeCOM Sign as a Predictor of Large Vessel Occlusions and Stroke Mimics.
Kevin S. Attenhofer, Lovella Hailey, Melissa Mortin, Karen Rapp, Kunal Agrawal, Branko Huisa-Garate, Royya Modir, Dawn M Meyer, Thomas M. Hemmen, Brett C. Meyer> ;Journal of Stroke and Cerebrovascular Diseases. 2018 Jun 1
5 citations
Factors Influencing Acute Stroke Thrombolytic Treatments in Hispanics In the San Diego Region.
Patrick M. Chen, David T Nguyen, James P Ho, Mohsen Pirastehfar, Rajiv Narula, Karen Rapp, Kunal Agrawal, Branko N. Huisa, Royya Modir, Dawn M Meyer, Thomas M. Hemmen,...> ;Austin Journal of Cerebrovascular Disease & Stroke. 2018 Jan 11
108 citations
Translational Stroke Research: Vision and Opportunities
Francesca Bosetti, James I. Koenig, Cenk Ayata, Stephen A. Back, Kyra J. Becker, Joseph P. Broderick, S. Thomas Carmichael, Sunghee Cho, Marilyn J. Cipolla, Dale Corbe...> ;Stroke. 2017 Sep 1
3 citations
Non-enhanced CT Maximum Intensity Projections for the Detection of Large Vessel Occlusions.
James P Ho, David T Nguyen, Pirastefahr M, Rajiv Narula, Lovella Hailey, Melissa Mortin, Karen Rapp, Kunal Agrawal, Branko Huisa-Garate, Royya Modir, Dawn M Meyer, Tho...> ;Austin Journal of Cerebrovascular Disease & Stroke. 2017 Jul 13
100 citations
Results of the ICTuS 2 Trial (Intravascular Cooling in the Treatment of Stroke 2).
Patrick D. Lyden, Thomas M. Hemmen, James C. Grotta, Karen Rapp, Karin Ernstrom, Teresa Rzesiewicz, Stephanie A. Parker, Mauricio Concha, Syed Hussain, Sachin Agarwal,...> ;Stroke. 2016 Dec 1
7 citations
Accuracy of Stroke Diagnosis in Telestroke-Guided Tissue Plasminogen Activator Patients.
Kunal Agrawal, Rema Raman, Karin Ernstrom, Robert Joseph Claycomb, Dawn M Meyer, Thomas M. Hemmen, Royya Modir, Pranav Kachhi, Brett C. Meyer> ;Journal of Stroke and Cerebrovascular Diseases. 2016 Dec 1
135 citations
Stroke Severity Is a Crucial Predictor of Outcome: An International Prospective Validation Study
Natalia S. Rost, Alex Bottle, Jin-Moo Lee, Marc Randall, S.E. Middleton, Louise Shaw, Vincent Thijs, Gabriel J.E. Rinkel, Thomas M. Hemmen> ;Journal of the American Heart Association. 2016 Jan 21
4 citations
Seizures and Meperidine: Overstated and Underutilized.
Konrad Schlick, Thomas M. Hemmen, Patrick D. Lyden> ;Therapeutic Hypothermia and Temperature Management. 2015 Dec 7
10 citations
Feasibility and Safety of Using External Counterpulsation to Augment Cerebral Blood Flow in Acute Ischemic Stroke-The Counterpulsation to Upgrade Forward Flow in Strok...
Kama Z. Guluma, David S Liebeskind, Rema Raman, Karen Rapp, Karin Ernstrom, Andrei V. Alexandrov, Reza Bavarsad Shahripour, Kristian Barlinn, Sidney Starkman, Ileana D...> ;Journal of Stroke and Cerebrovascular Diseases. 2015 Nov 1
32 citations
Defining mild stroke: outcomes analysis of treated and untreated mild stroke patients.
Ilana Spokoyny, Rema Raman, Karin Ernstrom, Pooja Khatri, Dawn M Meyer, Thomas M. Hemmen, Brett C. Meyer> ;Journal of Stroke and Cerebrovascular Diseases. 2015 Jun 1
14 citations
The ''DeyeCOM Sign'': Predictive Value in Acute Stroke Code Evaluations
Clarity R. Coffman, Rema Raman, Karin Ernstrom, Nabeel Herial, Konrad Schlick, Royya Modir, Dawn M Meyer, Thomas M. Hemmen, Brett C. Meyer> ;Journal of Stroke and Cerebrovascular Diseases. 2015 Jun 1
12 citations
Association of Hispanic ethnicity with acute ischemic stroke care processes and outcomes.
William P Neil, Rema Raman, Thomas M. Hemmen, Karin Ernstrom, Brett C. Meyer, Dawn M Meyer, Bruce Ovbiagele> ;Ethnicity & Disease. 2015 Jan 1
4 citations
Does symptom onset to primary stroke center time goals affect stroke outcome
Bryant H Chee, Rema Raman, Karin Ernstrom, Amy K Guzik, Thomas M. Hemmen, Karen Rapp, Brett C. Meyer, Dawn M Meyer> ;Journal of Stroke and Cerebrovascular Diseases. 2014 May 1
11 citations
Imaging Negative Stroke: Diagnoses and Outcomes in Intravenous Tissue Plasminogen Activator–Treated Patients
Ilana Spokoyny, Rema Raman, Karin Ernstrom, Brett C. Meyer, Thomas M. Hemmen> ;Journal of Stroke and Cerebrovascular Diseases. 2014 May 1
14 citations
Pooled Assessment of Computed Tomography Interpretation by Vascular Neurologists in the STRokE DOC Telestroke Network
Ilana Spokoyny, Rema Raman, Karin Ernstrom, Bart M. Demaerschalk, Patrick D. Lyden, Thomas M. Hemmen, Amy K Guzik, James Y. Chen, Brett C. Meyer> ;Journal of Stroke and Cerebrovascular Diseases. 2014 Mar 1
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Lectures

Introduction and Overview
La Jolla, CA - 2/13/2014

Press Mentions

UC San Diego Health Recognized for Outstanding Stroke CareMarch 29th, 2018
UC San Diego Health Receives Certification for Second Comprehensive Stroke CenterJanuary 8th, 2018
Hickeys? Wasps? Strange Things Can Cause StrokesSeptember 9th, 2016
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