Dr. Medkhour studies how different factors, such as age and surgery methods, impact recovery for patients with brain conditions. For example, he examines patients with ruptured intracranial aneurysms, comparing two treatment methods: endovascular coiling and neurosurgical clipping. He also explores the outcomes of surgery for brain tumors and strokes, including innovative technologies and techniques like virtual reality for surgical training. Furthermore, his research delves into how age affects recovery from strokes and surgeries, aiming to find the best approaches to help older patients.
Key findings
Younger patients with ruptured brain aneurysms had a 77% functionality rate with endovascular coiling, compared to 69% with neurosurgical clipping.
After thrombectomy, patients with M2 segment clots showed a 48.6% rate of good recovery, versus 43.5% for M1 clots.
An external lumbar drain predicted good outcomes in 96% of idiopathic normal pressure hydrocephalus patients tested positive.
In surgeries for Chiari malformation type I, those with duraplasty had a lower improvement rate of 73% compared to 84% for those without duraplasty.
Older patients showed higher risks of poor recovery after decompressive hemicraniectomy due to immunological and metabolic changes.
Frequently asked questions
Does Dr. Medkhour study brain aneurysms?
Yes, he specifically investigates treatment outcomes for ruptured brain aneurysms, comparing different surgical methods.
What kind of surgeries has Dr. Medkhour researched?
He has researched surgeries related to brain tumors, Chiari malformation, and stroke recovery, focusing on their effectiveness and patient outcomes.
Is Dr. Medkhour's work relevant for elderly stroke patients?
Absolutely. His studies address how aging affects recovery and highlight tailored treatment options for older stroke patients.
What role does technology play in Dr. Medkhour's research?
He explores innovative technologies, such as virtual reality, to enhance surgical planning and training for neurosurgeons.
How can Dr. Medkhour's findings impact patient care?
His research helps doctors make informed decisions about surgical options and predicts which patients will benefit most from specific treatments.
Publications in plain English
Corrigendum to 'Does the Setting of External Ventricular Drain Placement Affect Morbidity? A Systematic Literature Review Comparing Intensive Care Unit versus Operating Room Procedures' [World Neurosurgery 141 (2020) 131-141].
2021
World neurosurgery
Dawod G, Henkel N, Karim N, Caras A, Qaqish H +2 more
Usefulness and Impact of Intraoperative Imaging for Glioma Resection on Patient Outcome and Extent of Resection: A Systematic Review and Meta-Analysis.
2020
World neurosurgery
Caras A, Mugge L, Miller WK, Mansour TR, Schroeder J +1 more
Plain English This research studied advanced imaging techniques used during brain surgery for gliomas, like diffusion tensor imaging and intraoperative MRI, to see if they improve patient outcomes compared to standard navigation. The analysis found that while a slightly higher percentage of patients (46.5%) who used advanced imaging techniques had complete tumor removal (GTR) compared to those using standard methods (30.4%), the difference wasn't strong enough to be considered significant. Additionally, the rate of permanent neurological deficits was similar between both groups, with 11.3% for advanced imaging and 13.8% for standard navigation.
Who this helps: This helps patients undergoing glioma surgery and their doctors in making informed decisions about imaging techniques.
Does the Setting of External Ventricular Drain Placement Affect Morbidity? A Systematic Literature Review Comparing Intensive Care Unit versus Operating Room Procedures.
2020
World neurosurgery
Dawod G, Henkel N, Karim N, Caras A, Qaqish H +2 more
Plain English This study looked at how the location where an external ventricular drain (EVD) is placed—either in an intensive care unit (ICU) or an operating room (OR)—affects patient complications. The research found that EVDs placed in the OR had a higher accuracy rate of 84.25% compared to 68.29% in the ICU. However, complication rates, such as bleeding and infection, were similar between the two settings, with infection rates of 7.28% in the ICU and slightly higher at 8.06% in the OR. This matters because understanding the best setting for EVD placement can help prevent complications and improve patient outcomes.
Who this helps: This helps patients who require EVD placement and the doctors treating them.
Reconstruction of Complex Cranial and Orbit Fractures with Associated Hemorrhages: Case Report and Review of the Literature.
2020
Cureus
Caras A, Alexander C, Young A, Miller W, Medhkour A
Plain English This study looked at a unique case of a 55-year-old man who suffered serious head injuries, including fractures in the skull and eye socket, along with bleeding in the brain. After surgery using advanced techniques, the patient was able to recover well, with successful healing of his bones and control of the bleeding; however, he does have some issues with his left eye. This is important because it shows that timely and proper surgical response to complex head injuries can lead to good functional outcomes, but also highlights the need for careful surgical planning to improve healing and prevent further complications.
Who this helps: This helps patients with severe head injuries and their medical teams.
M2 segment thrombectomy is not associated with increased complication risk compared to M1 segment: A meta-analysis of recent literature.
2020
Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association
Alexander C, Caras A, Miller WK, Tahir R, Mansour TR +2 more
Plain English This study looked at two different parts of the brain where blood clots can block blood flow—M1 and M2 segments—and compared the outcomes after a procedure to remove these clots (thrombectomy). Researchers found that patients who had the M2 thrombectomy had better recovery outcomes, with 48.6% achieving good outcomes compared to 43.5% for M1 patients, and lower death rates at 16.3% versus 20.7%. The findings show that treating M2 segment blood clots is similarly safe and may even lead to better results than treating M1 clots.
Who this helps: This helps patients who suffer from strokes caused by clots in the M2 segment of the brain.
Outcomes of treatment modalities for ruptured intracranial aneurysms based on age - A meta-analysis.
2020
Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association
Dawod G, Henkel ND, Salahuddin H, Castonguay AC, Koneru S +4 more
Plain English This study looked at how age affects the success of two treatments—endovascular coiling (EVC) and neurosurgical clipping (NSC)—for patients with ruptured brain aneurysms. The researchers reviewed 13 studies involving over 7,000 patients and found that younger patients treated with EVC had better outcomes (77% functionality) compared to those treated with NSC (69%). In older patients, there was no significant difference in results between the two treatments, highlighting that younger patients might do better with EVC to avoid more severe complications.
Who this helps: Younger patients with ruptured brain aneurysms.
In Reply to the Letter to the Editor Regarding "Does the Setting of External Ventricular Drain Placement Affect Morbidity? A Systematic Literature Review Comparing Intensive Care Unit versus Operating Room Procedures".
2020
World neurosurgery
Dawod G, Caras A, Henkel N, Karim N, Qaqish H +2 more
Immunological, vascular, metabolic, and autonomic changes seen with aging possible implications for poor outcomes in the elderly following decompressive hemicraniectomy for malignant MCA stroke: a critical review.
2019
Journal of neurosurgical sciences
Mugge L, Mansour TR, Krafcik B, Mazur T, Floyd-Bradstock T +1 more
Plain English This study looked at how aging affects the outcomes of elderly patients (over 65) who have strokes and undergo a specific surgery called decompressive hemicraniectomy. The researchers found that older patients experience four main changes—related to their immune system, autonomic regulation, energy production, and blood vessel health—that worsen their recovery after a stroke. These changes lead to increased risks of poor outcomes, highlighting the need for tailored treatments and better management strategies for older stroke patients.
Who this helps: This benefits elderly stroke patients and their healthcare providers.
A Successful Outcome Despite Delayed Intervention for Cauda Equina Syndrome in a Young Patient with a Posterior Epidural Disc Extrusion.
2019
Cureus
Mugge L, Caras A, Miller W, Buehler M, Medhkour A
Plain English This study focused on a rare case of cauda equina syndrome caused by an unusual type of disc problem called epidural disc extrusion in a 19-year-old man. After experiencing serious issues like foot drop and bladder dysfunction, he underwent emergency surgery where doctors found and removed a piece of the disc pressing on his nerves. Remarkably, he recovered quickly after the operation, showing that even with a delayed intervention, patients can still achieve good outcomes.
Who this helps: This helps patients suffering from unusual cases of cauda equina syndrome, as well as the doctors treating them.
Virtual Reality-Based Simulators for Cranial Tumor Surgery: A Systematic Review.
2018
World neurosurgery
Mazur T, Mansour TR, Mugge L, Medhkour A
Plain English This research looked at how virtual reality (VR) can be used to help surgeons plan and practice for cranial tumor surgeries. Out of 1,662 articles reviewed, nine studies demonstrated that VR is effective for both planning surgeries and training surgeons, helping them improve their skills and create consistent performance benchmarks. This matters because it could lead to safer and more effective surgical procedures for patients with brain tumors.
Who this helps: This helps patients undergoing cranial tumor surgeries and the surgeons performing those operations.
The Art of Mimicry: Anterior Clinoid Dural-Based Cavernous Hemangioma Mistaken for a Meningioma.
2017
World neurosurgery
Mansour TR, Medhkour Y, Entezami P, Mrak R, Schroeder J +1 more
Plain English This study examined a rare type of brain tumor called a cavernous hemangioma, which was initially misidentified as a more common tumor known as a meningioma. The case involved a 36-year-old man who had an incidental brain mass discovered after a car accident; despite being diagnosed as a meningioma through imaging, the tumor was successfully removed without complications. The findings highlight the importance of considering this rare cavernous hemangioma in patients with similar brain lesions, as they may bleed heavily during surgery.
Who this helps: This helps neurosurgeons and patients with brain lesions by improving diagnostic accuracy and surgical safety.
A Unique Case of Carotid Splaying by a Cervical Vagal Neurofibroma and the Role of Neuroradiology in Surgical Management.
2017
Cureus
Itawi SA, Buehler M, Mrak RE, Mansour TR, Medhkour Y +1 more
Plain English This study examined a rare case of carotid splaying, which is the widening of blood vessels in the neck, caused by a cervical vagal neurofibroma in a 25-year-old woman with neurofibromatosis type 1, a genetic disorder. An MRI showed this unusual sign, prompting the use of a more detailed magnetic resonance angiography (MRA) that confirmed the tumor was not a dangerous carotid body tumor, leading to a successful surgery with minimal bleeding. This finding is important because it shows that MRA is crucial for surgical planning when faced with carotid splaying, potentially improving patient safety and surgical outcomes.
Who this helps: This benefits patients with neurofibromatosis and similar conditions.
Plain English This study looked at how other serious injuries, especially lung injuries, affect the recovery of patients with traumatic brain injury (TBI). Researchers analyzed 409 patients treated for TBI, finding that factors like older age and lower initial awareness (measured by the Glasgow Coma Scale) were strongly linked to worse outcomes—30% of patients had poor recovery. Importantly, while multiple injuries and lung damage exist in TBI patients, they did not predict how well someone would recover from their brain injury.
Who this helps: This information is valuable for doctors treating TBI patients, as it can guide treatment decisions based on factors that actually affect recovery.
Is There a Genetic Correlation between Multiple Sclerosis and Cerebral Aneurysms?
2016
World neurosurgery
Albrekkan FM, Bachir S, Jumaa MA, Zaidi SF, Medhkour A
Plain English This study looked at whether there is a genetic link between multiple sclerosis (MS) and cerebral aneurysms (CA), dangerous bulges in brain arteries that can burst. Researchers found that a specific gene, TNFRSF1A, which is linked to inflammation, may connect these two conditions. This is important because understanding this link could help doctors better recognize and treat patients at risk for both MS and aneurysms.
Who this helps: Patients with multiple sclerosis and potential cerebral aneurysms.
Posterior Reversible Encephalopathy Syndrome Secondary to CSF Leak and Intracranial Hypotension: A Case Report and Literature Review.
2015
Case reports in neurological medicine
Hammad T, DeDent A, Algahtani R, Alastal Y, Elmer L +3 more
Plain English This study looked at a rare brain condition called Posterior Reversible Encephalopathy Syndrome (PRES) that can happen when there's a leak of cerebrospinal fluid (CSF), causing low pressure in the brain. In one patient, PRES developed after a CSF leak from a medical procedure, but after the leak was fixed, their symptoms improved and follow-up brain scans showed that the brain damage had healed. It's important to keep blood pressure well-controlled in patients with CSF leaks because even normal blood pressure can trigger this brain condition.
Who this helps: This research helps patients who experience CSF leaks and their doctors by improving understanding of potential complications like PRES.
External lumbar drain: A pragmatic test for prediction of shunt outcomes in idiopathic normal pressure hydrocephalus.
2014
Surgical neurology international
Chotai S, Medel R, Herial NA, Medhkour A
Plain English This study looked at how well an external lumbar drain (ELD) can predict whether patients with idiopathic normal pressure hydrocephalus (iNPH) will benefit from a type of brain surgery called ventriculoperitoneal shunt (VPS). Out of 66 patients, 86% tested positive with the ELD, and 96% of those who tested positive responded well to the shunt after surgery. This research is important because it helps identify which patients are most likely to improve with surgery, ultimately leading to better treatment decisions.
Who this helps: This benefits patients with iNPH and their doctors by improving the chances of successful treatment outcomes.
Surgical outcomes after posterior fossa decompression with and without duraplasty in Chiari malformation-I.
2014
Clinical neurology and neurosurgery
Chotai S, Medhkour A
Plain English This study looked at surgical treatments for patients with Chiari malformation type I (CM-I), a condition where brain tissue extends into the spinal canal, and examined two techniques: with and without extra tissue repair (duraplasty). Researchers found that while the overall success rate for surgery was high (84% improved), those who had duraplasty experienced longer hospital stays and more complications compared to those who did not (73% had the simpler procedure). The findings highlight the need for careful consideration of surgical options based on the patient's specific condition and history.
Who this helps: This helps both patients dealing with CM-I and the doctors treating them, as it provides important insights into effective surgical approaches.
Ossification in an extra-intradural spinal meningioma-pathologic and surgical vistas.
2013
The spine journal : official journal of the North American Spine Society
Chotai SP, Mrak RE, Mutgi SA, Medhkour A
Plain English This study focused on a rare case of a spinal tumor known as an extra-intradural meningioma that had formed bone and other tissue. A 61-year-old woman had symptoms including numbness and weakness, and an MRI showed a tumor pressing on her spinal cord. The tumor was surgically removed completely, and after three years, she showed no signs of symptoms, indicating a successful outcome. The findings are important because they provide insight into how this type of tumor can develop and be treated effectively.
Who this helps: This helps patients with spinal tumors and their doctors.
Acute subdural hematoma following halo pin tightening in a patient with bilateral vertebral artery dissection.
2012
Neuro-Chirurgie
Medhkour A, Massie L, Horn M
Plain English This study focuses on a 61-year-old woman who developed a serious brain condition called acute subdural hematoma after having her halo pins tightened for a neck injury. The pins had previously loosened multiple times, and shortly after tightening, she fainted and hit her head, which led to emergency surgery. This case highlights the risks associated with using halo vests in patients with brittle bones and those on blood-thinning medication, emphasizing the need for careful monitoring and adjustment in similar situations.
Who this helps: This information is valuable for doctors managing patients with fragile bones and those on anticoagulants.
Successful use of inhaled nitric oxide to decrease intracranial pressure in a patient with severe traumatic brain injury complicated by acute respiratory distress syndrome: a role for an anti-inflammatory mechanism?
2009
Scandinavian journal of trauma, resuscitation and emergency medicine
Papadimos TJ, Medhkour A, Yermal S
Plain English This study looked at the use of inhaled nitric oxide (INO) to lower high pressure inside the skull in a patient who suffered a severe brain injury and also had breathing problems. The researchers found that INO helped to reduce inflammation and may have improved the patient's condition. This finding is important because it shows that INO can be a valuable treatment in similar cases, potentially leading to better recovery for patients with severe brain injuries.
Who this helps: Patients with severe traumatic brain injuries and respiratory issues.
In vitro testing of current spread during ventricular catheter coagulation using diathermy. Technical note.
2007
Journal of neurosurgery
Boop FA, Medhkour A, Honeycutt J, James C, Cherny WB +1 more
Plain English Researchers tested how heated instruments used in brain surgeries affect nearby tissues when used on a specific type of medical tube called a ventricular catheter. They found that using higher settings, like 40 watts, created dangerous flames and excessive heat, while using 20 watts was effective and safer without the risk of fire. This matters because it helps prevent complications during neurosurgery, making procedures safer for patients.
Who this helps: This helps patients undergoing brain surgery and the doctors performing those surgeries.
Extremely rare glioblastoma multiforme of the conus medullaris with holocord and brain stem metastases, leading to cranial nerve deficit and respiratory failure: a case report and review of the literature.
2005
Surgical neurology
Medhkour A, Chan M
Plain English This study looked at a very rare and aggressive type of brain and spine cancer called glioblastoma multiforme (GBM) that developed in a 20-year-old man. The patient experienced severe symptoms, including back pain and weakness in his legs, and imaging showed that the cancer spread throughout his spinal cord and to his brain. Proper and aggressive treatment is crucial for managing this type of cancer and maintaining the patient's quality of life.
Who this helps: This helps patients with rare forms of glioblastoma and their healthcare providers.
Complete heart block with ventricular asystole during left vagus nerve stimulation for epilepsy.
2004
Epilepsy & behavior : E&B
Ali II, Pirzada NA, Kanjwal Y, Wannamaker B, Medhkour A +2 more
Plain English This study looked at how stimulating the vagus nerve during surgery for epilepsy treatment can affect heart function. Three patients experienced a serious heart problem called complete heart block, leading to a temporary stop in heart activity, during the procedure. This finding is important because it helps doctors recognize potential risks associated with vagus nerve stimulation in patients with epilepsy.
Who this helps: This helps patients with epilepsy and the doctors treating them.
Plain English This study focused on a rare and aggressive brain tumor called subependymal giant cell astrocytoma (SEGCA) in a 5-month-old baby with a condition known as tuberous sclerosis complex (TSC). The child developed severe symptoms, including seizures and increased tumor size, ultimately leading to death despite surgery. Understanding SEGCA better is crucial for improving treatment options and outcomes for affected infants.
Who this helps: This research benefits patients with TSC and their families.
Growth of human schwannomas in the subrenal capsule of the nude mouse.
1990
Neurosurgery
Lee JK, Kim TS, Chiocca EA, Medhkour A, Martuza RL
Plain English This study looked at how human schwannomas, which are tumors related to nerve cells, grow when implanted in a specific area of mice. Researchers tested tumors from 14 patients and found that about 77% of solid tumor implants and 70% of cell cluster implants grew successfully over a 1.5 to 3-month period. Understanding how these tumors grow in this model can help in developing new treatments.
Who this helps: This helps researchers and doctors working on treatments for patients with schwannomas.
Implantation of human meningiomas into the subrenal capsule of the nude mouse. A model for studies of tumor growth.
1989
Journal of neurosurgery
Medhkour A, Van Roey M, Sobel RA, Fingert HJ, Lee J +1 more
Plain English Researchers implanted human meningioma tumors from 16 patients into the kidneys of special mice to study how these tumors grow. They found that 83% of implants from solid tumors and 75% from cell cultures successfully grew, with some tumors doubling in size in just one week. This research helps us understand how meningiomas develop and can lead to better treatments for patients.
Who this helps: Patients with meningiomas who need new treatment options.
Medhkour A, Leblanc G, Francoeur J, Copty M, Bouchard JM +2 more
Plain English This study looked at the effects of early surgery on patients who experienced subarachnoid hemorrhage (S.A.H.), a serious type of brain bleed. Out of 136 patients, 22 had surgery within 72 hours after the hemorrhage, which is important since many complications and the highest chance of rebleeding happen in those early days. The findings highlight the need for timely intervention, as timely surgery may improve outcomes after S.A.H. where previously, 64% either died or became severely disabled.
Who this helps: This helps patients experiencing subarachnoid hemorrhage.
Luke Mugge Tarek R Mansour Andrew Caras Giana Dawod Yacine Medhkour Nicholas Henkel Nurose Karim Hanan Qaqish Christopher Alexander William Kyle Miller
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Plain-English summaries generated by AI.
Not medical advice.