David Newell
David W. Newell, M.D.

David W. Newell, M.D.

David W. Newell, M.D.
Specialty

Cerebrovascular Surgery, Neurosurgery, Spine Surgery, Stroke

Clinical Interests / Special Procedures Performed

Adult Complex Mimimally Invasive Spinal Disorders, Aneurysmal Arterial Disease, Aneurysms, Aneurysms (Brain/Cerebral), Arteriovenous Bypass, Arteriovenous Malformations, Auto Accidents-Back/Neck pain, Back Injuries, Back/Spine Injuries, Back/Spine Surgery, Carotid End Arterectomy, Carotid Endarterectomy, Carotid Surgery, Cerebrovascular Diseases, Cervical Spine Problems/Proc., Cervical/Lumbar Degen. Disorders, Clinical Research & Educ., Clinical Trials, Craniocervical Junction Disorders, Craniocervical Junction Surgery, CyberKnife, Disc Problems, Disc Replacement, Gamma Knife, Lumbar Fusion, Lumbar Spine Trauma/Disease, Microvascular Surgery, Minimally Invasive Spine Surgery, Neck Disorders, Neck Injuries, Spinal Cord Injury, Spinal Disorders, Spine Tumor/AVM Embolization, Stroke Thrombolysis, Swedish Neuroscience Institute, Tumors (Spine and Cranial)

  • Accepting Children: No
  • Accepting New Patients: Yes
  • Accepting Medicare: Yes
  • Accepting Medicaid/DSHS: Yes
Payment Methods Accepted:

Bill Insurance, VISA, Master Card, Cash, Check

Insurance Accepted:

Contact this office for accepted insurance plans.

Additional Information:

Professor, Neurological Surgery, University of Washington, Former Chief of Neurosurgery, Harborview Medical Center

Dr. Newell has been named in many prestigious lists of best doctors, including: Best Doctors in America®, Super doctorsSeattle Magazine, Seattle Metropolitan Magazine, Washington Magazine,  Consumer’s Guide to Top Doctors, Health Network Service Excellence Award, Castle Connolly Medical Ltd., and Av vo, one of the nation's leading companies involved in quality metrics in health care.

Dr. Newell was voted "Top Doctors" in Seattle Metropolitan Magazine (2012, 2013)

Physicians, nurses and physician assistants in King, Kitsap and Snohomish counties nominated colleagues they would choose to treat themselves and their loved ones.

News Release

Dr. Newell was voted "Top Doctors" in Seattle Magazine (2012)

A survey was mailed to more than 18,000 physicians in King, Pierce, Snohomish and Kitsap counties. The survey asked physicians to name the provider they would seek out or recommend to loved ones.

News Release

Medical School

Case Western Reserve University

Residency

University of Washington - Department of Neurosurgery

Fellowship(s)

Department of Neurosurgery, University of Bern, Switzerland

Board Certifications

American Board of Neurological Surgery

Additional Information:

Professor, Neurological Surgery, University of Washington, Former Chief of Neurosurgery, Harborview Medical Center

Dr. Newell has been named in many prestigious lists of best doctors, including: Best Doctors in America®, Super doctorsSeattle Magazine, Seattle Metropolitan Magazine, Washington Magazine,  Consumer’s Guide to Top Doctors, Health Network Service Excellence Award, Castle Connolly Medical Ltd., and Av vo, one of the nation's leading companies involved in quality metrics in health care.

Dr. Newell was voted "Top Doctors" in Seattle Metropolitan Magazine (2012, 2013)

Physicians, nurses and physician assistants in King, Kitsap and Snohomish counties nominated colleagues they would choose to treat themselves and their loved ones.

News Release

Dr. Newell was voted "Top Doctors" in Seattle Magazine (2012)

A survey was mailed to more than 18,000 physicians in King, Pierce, Snohomish and Kitsap counties. The survey asked physicians to name the provider they would seek out or recommend to loved ones.

News Release

Click here for published research.

Treating Arteriovenous Malformations to Remove the Risk of Rupture

An arteriovenous malformation (AVM) in the brain is a relatively rare condition – occurring in less that 1 percent of the population. It can, however, be neurologically morbid in young adults ages 15 to 20, who are at the greatest risk for hemorrhage and least likely to exhibit symptoms. About 2 to 4 percent of all AVMs each year hemorrhage.

An AVM’s tangled mass of blood vessels, which forms in utero, produces multiple direct connections between arteries and veins without the normal, intervening capillaries. Symptoms often are not present until later in life or until after the AVM ruptures.

A small number of congenital syndromes, such as Sturge-Weber, Rendu-Osler-Weber, ataxia telangiectasia, and Wyburn-Mason, are associated with AVMs. Once formed, extrinsic factors, such as arterial shunting, growth factors and intracranial hemorrhage, may alter the size and shape of an AVM.

The most common types of AVMs are:

Using Ultrasound for Treatment of Brain Hemorrhage

In September, I co-authored this cover article in the Journal of Neurosurgery on the results of a study using ultrasound for the treatment of brain hemorrhage. The study involved 33 patients with spontaneous intracerebral hemorrhage who were screened for inclusion in a SNI clinical study known as “SLEUTH” (Safety of Lysis with Ultrasound in the Treatment of Intracerebral and Intraventricular Hemorrhage). You can the abstract and full text of the article or see background information on the study, and watch a related video on WebMD.

Detecting cerebral microemboli with transcranial doppler

Since its introduction in 1982, transcranial doppler ultrasound (TCD) has evolved into a por­table, multimodality, noninvasive method for real-time imaging of intracranial vasculature.

The detection of cerebral microemboli is among the more remarkable capabilities of TCD. Emboli create countable signals in the ultrasound display due to the higher reflection of sound waves compared to the blood cells. Experimental mod­els have shown a high sensitivity and specificity for detection of a variety of substrates, including thrombotic, platelet and atheromatous emboli.

Microembolic signals (MES) within the in­tracranial vasculature are most frequently identi­fied in patients with large-vessel atherosclerotic disease, such as carotid stenosis. They have also been reported in intracranial arterial stenosis, ar­terial dissection, cardiac disease and atheroaortic plaque. Additionally, they have been seen in arter­ies distal to coiled aneurysms.

There is strong evidence that MES detection predicts future ipsilateral stroke risk in patients with symptomatic carotid stenosis (Markus HS, et al.; King A, et al.). A recent study of patients with asymptomatic carotid stenosis demonstrated that MES predicted subsequent ipsilateral stroke and TIA, and also ipsilateral stroke alone, and that it is helpful in selecting patients who will benefit from carotid endarterectomy (Markus, HS et al.).

Identification of active embolization provides crucial patho­physiological information to the neurologist and can also aid in the selection of tailored therapy aimed at reducing the risk of stroke. Emboli from different sources have unique compositions and re­quire specific therapy, such as antiplatelet agents for emboli from large artery atherosclerotic plaque and anticoagulants for cardiac emboli.

Future advances in TCD technology will permit full automa­tion and better identification of the composition and size of circu­lating embolic materials, thus improving its value for patients with cerebrovascular disease.

Contact Colleen Douville, RVT, at colleen.douville@swedish.org or 206-320-4080, for more information about TCD for detec­tion of cerebral microemboli.

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Offices

Swedish Cerebrovascular Center
550 17th Avenue
Suite 110
Seattle, WA 98122
Phone: 206-320-3470
Fax: 206-320-3471

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