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Alexander lilja-cyron

Alexander Lilja-Cyron, Morten Andresen, Jesper Kelsen, Trine Hjorslev Andreasen, Kåre Fugleholm, Marianne Juhler
BACKGROUND: Decompressive craniectomy (DC) is used in cases of severe intracranial hypertension or impending intracranial herniation. DC effectively lowers intracranial pressure (ICP) but carries a risk of severe complications related to abnormal ICP and/or cerebrospinal fluid (CSF) circulation, eg, hygroma formation, hydrocephalus, and "syndrome of the trephined." OBJECTIVE: To study the long-term effect of DC on ICP, postural ICP regulation, and intracranial pulse wave amplitude (PWA)...
February 15, 2019: Neurosurgery
Stian Solumsmoen, Alexander Lilja-Cyron, Kåre Fugleholm Buch, Jesper Kelsen
Penetrating brain injury is a severe form of traumatic brain injury. It is significantly less prevalent than closed head injury but carries a much worse prognosis. The experience with traumatic penetrating brain injury in Denmark is limited. The most common causes in penetrating brain injury in Denmark are: violence, accidents and suicidal behaviour. The aim of this review is to give a brief update on historical background, mechanisms of disease, recommended medical and surgical treatment, and complications...
December 17, 2018: Ugeskrift for Laeger
Desirée Lindeskog, Alexander Lilja-Cyron, Jesper Kelsen, Marianne Juhler
OBJECTIVES: Suboccipital decompressive craniectomy (SDC) is considered the best treatment option in patients with space-occupying cerebellar infarction and clinical signs of deterioration. The primary purpose of this study was to evaluate long-term functional outcome in patients one year after SDC for space-occupying cerebellar infarction, and secondly, to determine factors associated with outcome. PATIENTS AND METHODS: All patients treated with SDC due to space-occupying cerebellar infarction between January 2009 and October 2015 were included in the study...
January 2019: Clinical Neurology and Neurosurgery
Lonnie G Petersen, Justin S Lawley, Alexander Lilja-Cyron, Johan C G Petersen, Erin J Howden, Satyam Sarma, William K Cornwell, Rong Zhang, Louis A Whitworth, Michael A Williams, Marianne Juhler, Benjamin D Levine
KEY POINTS: During long-term missions, some astronauts experience structural and functional changes of the eyes and brain which resemble signs/symptoms experienced by patients with intracranial hypertension. Weightlessness prevents the normal cerebral volume and pressure 'unloading' associated with upright postures on Earth, which may be part of the cerebral and ocular pathophysiology. By placing the lower body in a negative pressure device (LBNP) that pulls fluid away from cranial compartments, we simulated effects of gravity and significantly lowered pressure within the brain parenchyma and ventricle compartments...
October 4, 2018: Journal of Physiology
Nicolas Hernandez Norager, Alexander Lilja-Cyron, Carsten Reidies Bjarkam, Sara Duus, Marianne Juhler
BACKGROUND: Telemetric intracranial pressure (ICP) monitoring enable long-term ICP monitoring on patients during normal day activities and may accordingly be of use during evaluation and treatment of complicated ICP disorders. However, the benefits of such equipment depend strongly on the validity of the recordings and how often the telemetric sensor needs to be re-implanted. This study investigates the clinical and technical sensor survival time and drift of the telemetric ICP sensor: Raumedic Neurovent-P-tel...
November 2018: Acta Neurochirurgica
Alexander Lilja-Cyron, Carsten Reidies Bjarkam, Jannick Brennum
Since the beginning of the 20th century, head transplantation (cephalosomatic anastomosis) has been studied in animal models including mice, rats and monkeys. A recently proposed protocol for head transplantation in humans has revived the interest for the procedure. However, key elements in the procedure, such as functional spinal cord fusion, sufficient neuroprotection and post-operative pain control are still undocumented. Ethical issues remain concerning the scientific validity of the proposed project as well as general concerns regarding the entire concept of human head transplantation...
July 30, 2018: Ugeskrift for Laeger
Alexander Lilja-Cyron, Jesper Kelsen, Morten Andresen, Kåre Fugleholm, Marianne Juhler
Intracranial pressure (ICP) monitoring is crucial in the management of acute neurosurgical conditions such as traumatic brain injury (TBI). However, pathological ICP may persist beyond the admission to the neuro intensive care unit (NICU). We investigated the feasibility of telemetric ICP monitoring in the NICU, as this technology provides the possibility of long-term ICP assessment beyond NICU discharge. In this prospective investigation, we implanted telemetric ICP sensors (Raumedic Neurovent-P-tel) instead of conventional, cabled ICP sensors in patients undergoing decompressive craniectomy...
July 15, 2018: Journal of Neurotrauma
Sarah Hornshøj Pedersen, Alexander Lilja-Cyron, Morten Andresen, Marianne Juhler
BACKGROUND: No true reference values for intracranial pressure (ICP) in humans exist; current values are estimated from measurements in adults who undergo treatment in order to correct ICP. We report ICP values in a "pseudonormal" group of children and adults to examine if age affects ICP. METHODS: We analyzed data from all nonshunted patients undergoing a 24-hour ICP monitoring as part of a diagnostic work-up and included patients with no subsequent suspicion of increased ICP and no need for pressure-relieving treatment with a minimum follow-up period of 3 years...
February 2018: World Neurosurgery
Tenna Capion, Alexander Lilja-Cyron, Jesper Kelsen
A 73-year-old woman was admitted to hospital due to anaemia. She suffered a minor head trauma and deteriorated to deep unconsciousness. A CT revealed an acute subdural haematoma (ASDH). Initially, she was not found to be a candidate for neurosurgical intervention, but within 24 hours her level of consciousness improved dramatically, and a renewed CT showed resolution of the ASDH. She underwent acute craniotomy with good outcome. This illustrates the importance of re-evaluation of patients with intracranial haemorrhage...
September 4, 2017: Ugeskrift for Laeger
Alexander Lilja-Cyron, Vagn Eskesen, Klaus Hansen, Daniel Kondziella, Jesper Kelsen
Malignant stroke is an intracranial herniation syndrome caused by cerebral oedema after a large hemispheric or cerebellar stroke. Malignant middle cerebral artery infarction is a devastating disease with a mortality around 80% despite intensive medical treatment. Decompressive craniectomy reduces mortality and improves functional outcome - especially in younger patients (age ≤ 60 years). Decompression of the posterior fossa is a life-saving procedure in patients with malignant cerebellar infarctions and often leads to good neurological outcome...
October 24, 2016: Ugeskrift for Laeger
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