Association between plasma GFAP concentrations and MRI abnormalities in patients with CT-negative traumatic brain injury in the TRACK-TBI cohort: a prospective multicentre study

This study is registered with, number NCT02119182.FindingsBetween Feb 26, 2014, and June 15, 2018, we recruited 450 patients with normal head CT scans (of whom 330 had negative MRI scans and 120 had positive MRI scans), 122 orthopaedic trauma controls, and 209 healthy controls. AUC for GFAP in patients with CT-negative and MRI-positive findings versus patients with CT-negative and MRI-negative findings was 0·777 (95% CI 0·726–0·829) over 24 h. Median plasma GFAP concentration was highest in patients with CT-negative and MRI-positive findings (414·4 pg/mL, 25–75th percentile 139·3–813·4), followed by patients with CT-negative and MRI-negative findings (74·0 pg/mL, 17·5–214·4), orthopaedic trauma controls (13·1 pg/mL, 6·9–20·0), and healthy controls (8·0 pg/mL, 3·0–14·0; all comparisons between patients with CT-negative MRI-positive findings and other groups p
Source: The Lancet Neurology - Category: Neurology Source Type: research

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Authors: Cauley KA, Mongelluzzo GJ, Fielden SW Abstract Identification of early ischemic changes (EIC) on noncontrast head CT scans performed within the first few hours of stroke onset may have important implications for subsequent treatment, though early stroke is poorly delimited on these studies. Lack of sharp lesion boundary delineation in early infarcts precludes manual volume measures, as well as measures using edge-detection or region-filling algorithms. We wished to test a hypothesis that image intensity inhomogeneity correction may provide a sensitive method for identifying the subtle regional hypodensity ...
Source: International Journal of Biomedical Imaging - Category: Radiology Tags: Int J Biomed Imaging Source Type: research
Duplex ultrasound examination, computed tomography scans, and magnetic resonance angiography have traditionally been used as noninvasive methods to assess carotid stenosis severity. The degree of stenosis in asymptomatic patients has often been used as the main criterion to assess risk for plaque embolization and stroke. There has been an effort to find alternate methods to assess vulnerable plaques. This has included many modalities, including magnetic resonance imaging and other ultrasound techniques.
Source: Journal of Vascular Surgery - Category: Surgery Authors: Tags: Invited commentary Source Type: research
ConclusionStroke CT will continue to increase the out of hours work load for CT departments across the country especially with our ageing population. It is vital that services, particularly in level 3 stroke centres, are adequately equipped in terms of staffing to meet the highest standard of care in the management of acute stroke.
Source: Age and Ageing - Category: Geriatrics Source Type: research
In this study, researchers studied 438,952 participants in the UK Biobank, who had a total of 24,980 major coronary events - defined as the first occurrence of non-fatal heart attack, ischaemic stroke, or death due to coronary heart disease. They used an approach called Mendelian randomisation, which uses naturally occurring genetic differences to randomly divide the participants into groups, mimicking the effects of running a clinical trial. People with genes associated with lower blood pressure, lower LDL cholesterol, and a combination of both were put into different groups, and compared against those without thes...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Conclusion: This case report suggests that further randomized studies may evaluate whether repeated IVtPA may be safe and effective in ERS occurring shortly after a previous stroke when patients experience a period of complete neurological regression, minor disability, and a small infarct volume. Should the hypothesis be confirmed, small volume core and wide volume penumbra at perfusion CT may support the decision of adopting IVtPA repetition.
Source: The Neurologist - Category: Neurology Tags: Case Report/Case Series Source Type: research
Inflow malposition during surgery, postoperative pump migration, inflow obstruction, and right ventricular compression are major contributors to low flow and adverse events in patients with ventricular assist devices (VADs). These position abnormalities can lead to adverse events including ischemic stroke. To address these problems, we conducted a virtual anatomical fitting study and hemodynamic simulation on iterative cannula designs, resulting in the EVAHEART 2 with the novel double-cuff tipless (DCT) inflow cannula and smaller pump design. Anatomical fitting was based on computed tomography scans of six patients with he...
Source: ASAIO Journal - Category: Medical Devices Tags: Biomedical Engineering Source Type: research
Endovascular procedures have drastically improved the available therapy options for a number of diseases and conditions. Catheters can now be navigated deep into the body, including the brain, but there’s still room for improvement to traverse ...
Source: Medgadget - Category: Medical Devices Authors: Tags: Neurology Neurosurgery Vascular Surgery Source Type: blogs
ConclusionsAscending aortic stent placement for ascending aortic disease is feasible and is associated with favorable aortic remodeling. Despite persistent perfusion to the false lumen in a subset of patients, there is minimal aortic dilation at short-term follow-up with excellent survival.
Source: The Annals of Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Source Type: research
Stroke involving some areas of the cerebral hemisphere, such as insula, amygdala, and lateral hypothalamus, may cause changes in autonomic control of cardiac function. A 58-year-old woman presented to the emergency department for acute onset of left facial-brachial-crural hemiparesis and dysarthria. A brain CT scan showed subacute ischemic lesion with hemorrhagic infarction in right insular-rolandic cortex. Over the next few days ECG showed severe bradycardia with elongation of QTc, significative pauses (5 seconds), runs of nonsustained ventricular tachycardia and torsades de pointes.
Source: Journal of Stroke and Cerebrovascular Diseases - Category: Neurology Authors: Tags: Case Report Source Type: research
AbstractThis technical note describes a novel CT scan protocol that includes a non-enhanced CT, dynamic CTA, and perfusion of the whole brain and CTA of the carotid arteries using a 320-row area detector CT scanner, with a unique contrast injection and acceptable radiation exposure dose in patients presenting with acute ischemic stroke. The acquisition parameters and reconstruction parameters will be discussed including the use of model-based iterative reconstruction (MBIR), time summing (tMIP), and subtraction techniques to optimize the results of this protocol.Key Points• Scanning on a 320-row area detector CT can a...
Source: European Radiology - Category: Radiology Source Type: research
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