Department of Neurosurgery

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Michael F Stiefel, MD PhD

Assistant Professor of Neurosurgery at the Hospital of the University of Pennsylvania

Associate Director, Neurocritical Care

Director, Comprehensive Cerebrovascular and Endovascular Neurosurgery Program

Department: Neurosurgery

Contact information

3 Silverstein Pavilion
3400 Spruce Street
Philadelphia, PA 19104

Office: 215-615-5452
Fax: 215-349-5534

Email:
Michael.stiefel@uphs.upenn.edu

Education:
B.S. (Biology)
SUNY Stony Brook , 1991.
Ph.D. (Physiology)
Medical College of Virginia, 1999.
M.D.
Medical College of Virginia, 2000.

Post-Graduate Training
Intern in General Surgery, Hospital of the University of Pennsylvania, 2000-2001.
Resident in Neurosurgery, University of Pennsylvania, 2001-2006.
Groff Cerebrovascular Research Fellow, University of Pennsylvania, 2004-2006.
Interventional Neuroradiology, University of Pennsylvania, 2005-2006.
Chief Resident in Neurosurgery, University of Pennsylvania, 2006-2007.
Endovascular Neurosurgery, Barrow Neurological Institute, 2007-2008.

Certifications
Board Eligible- American Board of Neurological Surgery, 2007.
Endovascular Neurosurgery, 2008.

Permanent link

> School of Medicine > Faculty > Details

Description of Research Expertise

Subarachnoid Hemorrhage, Stroke, Traumatic Brain Injury, Endovascular Neurosurgery

Description of Clinical Expertise

Aneurysms, Arteriovenous Malformations (AVM), Dural Arteriovenous Fistulas (AVF), Spinal Arteriovenous Fistulas, Vascular Malformations, Cavernomas, Cavernous Malformations, Carotid-Cavernous Fistulas, Hemangioblastomas, Venous Angiomas, Brain tumors, Meningiomas, Carotid Stenosis, Vertebral Artery Stenosis, Intracranial Stenosis, Cerebrovascular Disease, Stroke, Subarachnoid Hemorrhage, Cerebrovascular Surgery, Neurovascular Surgery, Endovascular Neurosurgery, Interventional Neuroradiology, Coiling, Stenting, Angioplasty, Bypass Procedures, Carotid Artery Bypass, EC-IC Bypass, Microsurgery, Skull Base Surgery

Selected Publications

Stiefel MF, Heuer, GG, Hurst RW, Al-Okaili R, Weigele JB, Bagley L, Sutton L, Storm PB. : Endovascular and Surgical Treatment of Ruptured Cerebral Aneurysms in Pediatric Patients. Neurosurgery 2008.

Stiefel MF, Heuer GG, Abrahams JM, Bloom S, Smith MJ, Maloney-Wilensky E, Grady MS, LeRoux PD. : The Effect of Nimodipine of Cerebral Oxygenation in Patients with Poor Grade Subarachnoid Hemorrhage. J. Neurosurgery 101(4): 595-599, 2004.

Heuer GG, Gabel BC, Bhowmick DA, Stiefel MF, Hurst RW, Schuster JM.: Symptomatic high-flow arteriovenous fistula after a C-2 fracture. Case report. J Neurosurg Spine 8(4): 381-4, 2008.

Spiotta AM, Stiefel MF, Heuer GG, Bloom S, Maloney-Wilensky E, Yang W, Grady MS, Le Roux PD: Brain hyperthermia after traumatic brain injury does not reduce brain oxygen. Neurosurgery 62(4): 864-72, 2008.

Stiefel MF, Spiotta A, Gracias VH, Garuffe A, Guillamondegui OD, Maloney-Wilensky E, Bloom S, Grady MS, LeRoux PD. : Reduced mortality rate in patients with severe traumatic brain injury treated with brain tissue oxygen monitoring. J. Neurosurgery 103(5): 805-11, 2005.

Stiefel MF, Spiotta A, Udoetuk JD, Maloney-Wilensky E, Weigele JB, Hurst RW, LeRoux PD. : Intra-Arterial Papaverine Used to Treat Cerebral Vasospasm Reduces Brain Oxygen. Neurocritical Care 4: 113-118, 2006.

Stiefel MF, Marmarou A. : Cation dysfunction associated with cerebral ischemia followed by reperfusion: a comparison of microdialysis and ion-selective electrode methods. J. Neurosurgery 97(1): 97-103, 2002.

Stiefel MF, Udoetuk JD, Storm PB, Sutton L, Kim H, Dominguez T, Helfaer MA, Huh JW. : Brain tissue oxygen monitoring in pediatric patients with severe traumatic brain injury: case series. Journal of Neurosurgery: Pediatrics 105(4): 281-286, 2006.

Udoetuk J, Stiefel MF, Weigele J, Hurst R, LeRoux PD. : Admission Angiographic Cerebral Circulation Time may Predict Subsequent Angiographic Vasospasm Following Aneurysmal Subarachnoid Hemorrhage. Neurosurgery 61(6): 1152-9, 2007.

Magge SN, Chen HI, Stiefel MF, Ernst L, Cahill AM, Hurst R, Storm PB.: Multiple ruptured cerebral aneurysms in a child with Takayasu arteritis. J Neurosurg Pediatrics 1(1): 83-7, 2008.

Heuer GG, Zaghloul KA, Roberts R, Stiefel, MF, Storm PB. : Successful Microsurgical Extraction of a Migrated Coil After Failed Endovascular Closure of a Blalock-Taussig Shunt. Journal of Neurosurgery: Pediatrics 106: 136–138, 2007.

Wilensky EM, Bloom S, Leichter D, Verdiramo AM, Ledwith M, Stiefel M, LeRoux P, Grady MS. : Brain tissue oxygen practice guidelines using the LICOX CMP monitoring system. J Neurosci Nurs. 37(5): 278-88, 2005.

Yamamoto M, Marmarou CR, Stiefel, MF, Beaumont A, and Marmarou A. : Neuroprotective Effect of Hypothermia on Neuronal Injury in Diffuse Traumatic Brain Injury Coupled with Hypoxia and Hypotension. J. Neurotrauma 16: 487-500, 1999.

Gracias VH, Guillamondegui OD, Stiefel MF, Maloney-Wilensky E, Bloom S, Gupta R, Pryor JP, Reilly PM, LeRoux PD, Schwab CW.: Cerebral Cortical Oxygenation: A Pilot Study. J. Trauma 56: 469-474, 2004.

Heuer GG, Stiefel MF, Bailey RL, Schuster J. : Acute Paraparesis from Hemorrhagic Spinal Ependymoma: Diagnostic Dilemma and Surgical Management. Journal of Neurosurgery: Spine. 7(6): 652-5, 2007.

Dashti SR, Baharvahdat H, Sauvageau E, Chang SW, Stiefel MF, Park MS, Spetzler RF, Bambakidis NC: Brain abscess formation at the site of intracerebral hemorrhage secondary to central nervous system vasculitis. Neurosurgical Focus 24(6), 2008.

Stiefel MF, Udoetuk JD, Spiotta A, Gracias VH, Goldberg A, Maloney-Wilensky E, Bloom S, Grady MS, LeRoux PD. : Conventional neurocritical care and cerebral oxygenation after traumatic brain injury. J. Neurosurgery 105(4): 568-75, 2006.

Stiefel MF, Zaghloul KA, Bloom S, Gracias VH, Le Roux P.: Improved Cerebral Oxygenation following Inhaled Aerosolized Prostacyclin Therapy for Acute Lung Injury: A Case Report. Journal of Trauma 63(5): 1155-8, 2007.

Stiefel MF, Al-Okaili R, Weigele J, Hurst RW. : De novo aneurysm formation and regression after brain arteriovenous malformation embolization: case report. Surg Neurol. 67(1): 99-101, 2007.

Boockvar J, Stiefel M, Malhotra N, Dolinskas C, Dwyer-Joyce C, LeRoux P. : Dural cavernous angioma of the posterior sagittal sinus: case report. Surgical Neurol 63:178-181, 2005. 63: 178-181, 2005.

Smith MJ, Stiefel MF, Magge S, Frangos S, Bloom S, Gracias V, LeRoux PD. : Packed red blood cell transfusion increases local cerebral oxygenation. Crit Care Med. 33(5): 1104-8, 2005.

Stiefel MF, Heuer GG, Smith MJ, Bloom S, Maloney-Wilensky E, Gracias VH, and LeRoux PD. : Cerebral Oxygenation Following Decompressive Hemicraniectomy for the Treatment of Refractory Intracranial Hypertension. J. Neurosurgery 101(2): 241-247, 2004.

Dashti SR, Baharvahdat H, Spetzler RF, Sauvageau E, Chang SW, Stiefel MF, Park MS, Bambakidis NC: Operative intracranial infection following craniotomy. Neurosurgical Focus 24(6), 2008.

Yamamoto T, Rossi S, Stiefel M, Doppenberg E, Zauner A, Bullock R, and Marmarou A. : CSF and ECF glutamate concentrations in head injured patients. Acta Neurochir Suppl (Wien) 75: 17-29, 1999.

Stiefel MF, Verdiramo AM, Schuster JM, Gracias VH, and LeRoux PD. : Multi-modality Monitoring in the Management of Refractory Intracranial Hypertension: A Case Report. J. Trauma 59(3): 757-61, 2005.

Stiefel MF, Tomita Y, and Marmarou A. : Secondary Ischemia Impairing the Restoration of Ion Homeostasis following Traumatic Brain Injury. J. Neurosurgery 103(4): 707-14, 2005.

Yamamoto T, Marmarou A, Stiefel MF, Tsuji O, and Bullock R. : Evaluation of Homeostatic Changes in CSF Circulation: In-vivo Analysis of the Effect of Neurotransmitter Accumulation in the Extracellular Space Following Transient Global Ischemia. Acta Neurochir Suppl (Wien) 70: 71-74, 1997.