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Gill Sviri, MD, MSC

Assistant Affiliate Member, Research Institute
Houston Methodist


Dr. Sviri graduated medical school at the Technion-Israel Institute of Technology. Dr. Sviri did his training in Neurosurgery in Haifa, Israel and did a clinical skull base and cerebrovascular fellowship at the University of Washington, where he is currently affiliated as assistant professor. Dr. Sviri is currently vice chairman in the department of neurosurgery at the Rambam (Maimonides) Health Care Campus in Haifa, Israel. The hospital provides Level I trauma services for more than 2 million north Israel residents. Dr. Sviri holds an appointment as a clinical assistant professor in neurosurgery at the Israel institute of Technology. He joined the Houston Methodist Research Institute Neurosciences Research Program in 2014 as an Assistant Affiliate Member.

Description of Research

Dr. Sviri’s research program focuses on clinical evaluation of cerebral blood flow and metabolism in traumatic brain injury and after spontaneous subarachnoid hemorrhage. His current research is focused on defining the relationship between cerebral autoregulation impairments and cerebral metabolism after traumatic brain injury. Dr. Sviri has studied and described the impact of cerebral vasospasm on blood flow to the brain stem and established a new transcranial Doppler grading criteria for posterior circulation vasospasm. Dr. Sviri has also described the appearance of cerebral vasospasm in a new imaging modality – the perfusion CT. The studies on TBI focused on evaluation of the time course for autoregulation recovery after severe traumatic brain injury, suggesting that some patients recovered their autoregulation early and some have a late recovery with an autoregulation paralysis for couple of weeks and more after the injury. Dr. Sviri also found that in severe traumatic brain injury the metabolic rate for oxygen is impaired as some of the patients have mild impairments and those with severe injury lost their ability to extract and to use oxygen.

Areas Of Expertise

Cerebral autoregulation Cerebral blood flow (CBF) Traumatic brain injury (TBI) Vasospasm
Education & Training

MSc , Bruce Rappaport Faculty of Medicine Technion-Israel Institute of Technology, Haifa

Minimally Invasive Surgery for Resection of Parapharyngeal Space Tumors
Duek, I, Sviri, GE, Billan, S & Gil, Z 2017, Journal of Neurological Surgery, Part B: Skull Base. DOI: 10.1055/s-0037-1607315

Intraspinal hypotension syndrome presents as transient quadriplegia
Katzir, M, Tov, S, Eran, A & Sviri, GE 2016, British Journal of Neurosurgery, pp. 1-3. DOI: 10.1080/02688697.2016.1244257

Sviri, GE 2016, Journal of Neurosurgery, vol 124, no. 3, pp. 886-887. DOI: 10.3171/2015.7.JNS151538

Smart(phone) medicine
Katzir, M, Laarakker, AS, Sviri, GE & Zaaroor, M 2016, Journal of Trauma and Acute Care Surgery, vol 80, no. 1, pp. 171-172. DOI: 10.1097/TA.0000000000000891

Intrathecal or intraventricular therapy for post-neurosurgical Gram-negative meningitis: Matched cohort study
Shofty, B, Neuberger, A, Naffaa, ME, Binawi, T, Babitch, T, Rappaport, ZH, Zaaroor, M, Sviri, G & Paul, M 2016, Clinical Microbiology and Infection, vol 22, no. 1, pp. 66-70. DOI: 10.1016/j.cmi.2015.09.023

Iatrogenic metastasis of a colloid cyst
Katzir, M, Attia, M, Sviri, GE, Zaaroor, M & Abeshaus, S 2015, Acta Neurochirurgica, vol 157, no. 12, pp. 2201-2203. DOI: 10.1007/s00701-015-2554-x

Massive cerebral swelling immediately after cranioplasty, a fatal and unpredictable complication: report of 4 cases
Sviri, GE 2015, Journal of neurosurgery, vol 123, no. 5, pp. 1188-1193. DOI: 10.3171/2014.11.JNS141152

Risk factors associated with death or neurological deterioration among patients with Gram-negative postneurosurgical meningitis
Neuberger, A, Shofty, B, Bishop, B, Naffaa, ME, Binawi, T, Babich, T, Rappaport, ZH, Zaaroor, M, Sviri, G, Yahav, D & Paul, M 2015, Clinical Microbiology and Infection. DOI: 10.1016/j.cmi.2016.03.016

Uncal herniation in a fully conscious patient - The sliding uncus syndrome
Katzir, M, Attia, M, Sviri, GE & Zaaroor, M 2015, British Journal of Neurosurgery, vol 29, no. 2, pp. 308-309. DOI: 10.3109/02688697.2014.977779

Treatment and Outcome of Patients with Skull Base Chordoma: A Meta-analysis
Amit, M, NaAra, S, Binenbaum, Y, Billan, S, Sviri, G, Cohen, JT & Gil, Z 2014, Journal of Neurological Surgery, Part B: Skull Base, vol 75, no. 6, pp. 383-390. DOI: 10.1055/s-0034-1376197

Transcranial approach to jugular paragangliomas
Sviri, GE 2014, Operative Techniques in Otolaryngology - Head and Neck Surgery, vol 25, no. 3, pp. 259-264. DOI: 10.1016/j.otot.2014.04.007

Why mortality is still high with modern care of 613 evacuated mass lesions presented as severe head injuries 1999-2009.
Levi, L, Guilburd, J, Soustiel, J, Sviri, G, Constantinescu, M & Zaaroor, M 2012, Acta neurochirurgica. Supplement, vol 114, pp. 301-304. DOI: 10.1007/978-3-7091-0956-4_58

The Geriatric Scoring System (GSS) in meningioma patients - Validation
Cohen-Inbar, O, Sviri, GE, Soustiel, JF & Zaaroor, M 2011, Acta Neurochirurgica, vol 153, no. 7, pp. 1501-1508. DOI: 10.1007/s00701-011-1034-1

Cerebral blood flow and metabolism following decompressive craniectomy for control of increased intracranial pressure
Soustiel, JF, Sviri, GE, Mahamid, E, Shik, V, Abeshaus, S & Zaaroor, M 2010, Neurosurgery, vol 67, no. 1, pp. 65-72. DOI: 10.1227/01.NEU.0000370604.30037.F5

Time course for autoregulation recovery following severe traumatic brain injury: Clinical article
Sviri, GE, Aaslid, R, Douville, CM, Moore, A & Newell, DW 2009, Journal of Neurosurgery, vol 111, no. 4, pp. 695-700. DOI: 10.3171/2008.10.17686

Basilar artery vasospasm: Diagnosis and grading by transcranial Doppler
Sviri, GE, Zaaroor, M, Britz, GW, Douville, CM, Lam, A & Newell, DW 2008, . in Acta Neurochirurgica, Supplementum. 104 edn, Acta Neurochirurgica, Supplementum, no. 104, pp. 255-257. DOI: 10.1007/978-3-211-75718-5-51

Basilar artery vasospasm: Impact on outcome
Sviri, GE, Zaaroor, M, Britz, GW, Douville, CM, Lam, A & Newell, DW 2008, . in Acta Neurochirurgica, Supplementum. 104 edn, Acta Neurochirurgica, Supplementum, no. 104, pp. 387-389. DOI: 10.1007/978-3-211-75718-5-81

Results of endovascular treatment of traumatic intracranial aneurysms
Cohen, JE, Gomori, JM, Segal, R, Spivak, A, Margolin, E, Sviri, G, Rajz, G, Fraifeld, S & Spektor, S 2008, Neurosurgery, vol 63, no. 3, pp. 476-485. DOI: 10.1227/01.NEU.0000324995.57376.79

Long-term outcome of superficial temporal artery-middle cerebral artery bypass for patients with moyamoya disease in the US
Mesiwala, AH, Sviri, G, Fatemi, N, Britz, GW & Newell, DW 2008, Neurosurgical Focus, vol 24, no. 2, E15. DOI: 10.3171/FOC/2008/24/2/E15

Monitoring of cerebral metabolism: Non-ischemic impairment of oxidative metabolism following severe traumatic brain injury
Soustiel, JF & Sviri, GE 2007, Neurological Research, vol 29, no. 7, pp. 654-660. DOI: 10.1179/016164107X240017