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https://www.readbyqxmd.com/read/27923417/mechanisms-of-memory-dysfunction-during-high-altitude-hypoxia-training-in-military-aircrew
#1
Daniel A Nation, Mark W Bondi, Ellis Gayles, Dean C Delis
OBJECTIVES: Cognitive dysfunction from high altitude exposure is a major cause of civilian and military air disasters. Pilot training improves recognition of the early symptoms of altitude exposure so that countermeasures may be taken before loss of consciousness. Little is known regarding the nature of cognitive impairments manifesting within this critical window when life-saving measures may still be taken. Prior studies evaluating cognition during high altitude simulation have predominantly focused on measures of reaction time and other basic attention or motor processes...
December 7, 2016: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27918895/absorbed-in-sleep-dissociative-absorption-as-a-predictor-of-sleepiness-following-sleep-deprivation-in-two-high-functioning-samples
#2
Nirit Soffer-Dudek, Leah Shelef, Idit Oz, Anna Levkovsky, Ifaat Erlich, Shirley Gordon
In recent years, a labile sleep-wake cycle has been implicated as a cause for dissociative experiences, and studies show that dissociation is elevated following sleep deprivation. Dissociative individuals may find it harder to regulate sleepiness in the face of sleep disruption. Although there is significant variability in reactions to sleep deprivation, research on trait predictors is scarce. The present study examined the ability of trait dissociation to prospectively predict sleepiness following sleep loss and recovery sleep...
December 2, 2016: Consciousness and Cognition
https://www.readbyqxmd.com/read/27911071/severe-brain-injury-in-massachusetts-assessing-the-continuum-of-care
#3
Laura Lorenz, Gabrielle Katz
Acquired brain injury (ABI) is a major public health problem in Massachusetts (Hackman et al, 2014) and includes traumatic brain injury (TBI), stroke, ABI-related infectious diseases, metabolic disorders affecting the central nervous system (brain and spinal cord), and brain tumor. Advances in emergency medical care and neurosurgery mean that more people are surviving severe traumatic brain injury (Trexler et al, 2014). Yet many patients with severe TBI in particular, are not receiving inpatient services after initial treatment (Hackman et al, 2014; CDC, 2014) or later that are known to be effective (Malec & Kean, 2015; Lewis & Horn, 2015; BI Commission, 2011; Kolakowsky-Hayner et al, 2000; Interviews)...
December 10, 2015: Issue Brief
https://www.readbyqxmd.com/read/27909594/knowledge-of-the-research-assistants-regarding-local-anaesthetics-and-toxicity
#4
Derya Karasu, Canan Yılmaz, Şeyda Efsun Özgünay, Mürüvvet Dayıoğlu, Çağdaş Baytar, Gülsen Korfalı
OBJECTIVE: Cardiovascular system depression, respiratory arrest, coma, convulsions, loss of consciousness, muscle twitching, blurred vision, vertigo, dizziness and numbness of the tongue can be seen in local anaesthetic toxicity. Treatment includes 20% lipid solutions, airway control, symptomatic treatment for arrhythmia and convulsions. The aim of this study is to present the knowledge of research assistants, who used local anaesthetics in daily practice, regarding these medications and toxicity treatment and to raise awareness...
August 2016: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/27906663/value-of-patient-reported-symptoms-in-the-diagnosis-of-transient-loss-of-consciousness
#5
(no author information available yet)
No abstract text is available yet for this article.
November 15, 2016: Neurology
https://www.readbyqxmd.com/read/27902676/dural-sinus-cerebral-venous-thrombosis-in-a-pediatric-trauma-patient-a-rare-complication-after-closed-head-injury
#6
Jonathan Wilcher, Michelle Pannell
OBJECTIVE: Closed head injury rarely predisposes patients, particularly children, to the development of dural sinus thrombosis. In addition, most cases of sinus thrombosis are subacute in nature. The following is a case report of a precipitous course of dural sinus thrombosis after closed head injury in a pediatric trauma patient. DESCRIPTION: A 14-year-old African American girl presented to the emergency department as a trauma activation. She was an unrestrained rear-seat passenger involved in a motor vehicle collision during which she was ejected...
December 2016: Pediatric Emergency Care
https://www.readbyqxmd.com/read/27900920/-sudden-loss-of-consciousness-during-labour
#7
L T van Genugten, L P Morssink, E L van der Kooi
This case describes a 36-year-old woman, gravida 4 para 2 at 41 weeks and 3 days gestation, who appeared unconscious during labour for 75 minutes. After excluding physical disorders, it transpired that she was having a conversion disorder. A patient with a decreased level of consciousness in childbirth must be assessed using the ABCDE method, positioned in left lateral tilt to prevent inferior vena cava compression. After stabilization of the vital functions and establishing the patient's history, physical examination and laboratory tests are components of the initial clinical assessment...
2016: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/27898546/lateral-position-for-cesarean-delivery-because-of-severe-aortocaval-compression-in-a-patient-with-marfan-syndrome-a-case-report
#8
John C Coffman, Russell L Legg, Catherine F Coffman, Kenneth R Moran
Prompt recognition and management of hypotension resulting from aortocaval compression syndrome are essential to optimize the maternal and fetal outcomes. Management involves increasing leftward uterine displacement and sometimes full lateral positioning, although lateral position during cesarean delivery is typically considered to be impractical. We report an obstetric patient case of severe aortocaval compression syndrome resulting in hypotension and loss of consciousness that ultimately underwent cesarean delivery under general anesthesia in the lateral position...
November 28, 2016: A & A Case Reports
https://www.readbyqxmd.com/read/27893181/synaesthesia-lost-and-found-two-cases-of-person-and-music-colour-synaesthesia
#9
Francesca R Farina, Kevin J Mitchell, Richard A P Roche
Synaesthesia is a developmental condition involving cross-communication between sensory modalities or substreams whereby an inducer (e.g. a sound) automatically evokes a concurrent percept in another modality (e.g. a colour). Whether this condition arises due to atypical structural connectivity (e.g., between normally unconnected cortical areas) or altered neurochemistry remains a central question. We report the exceptional cases of two synaesthetes - subjects AB and CD - both of whom experience coloured auras around individuals, as well as coloured perceptions in response to music...
November 28, 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27891195/reflections-on-a-giant-of-brain-science-how-lucky-we-are-having-walter-j-freeman-as-our-beacon-in-cognitive-neurodynamics-research
#10
REVIEW
Robert Kozma
Walter J. Freeman was a giant of the field of neuroscience whose visionary work contributed various experimental and theoretical breakthroughs to brain research in the past 60 years. He has pioneered a number of Electroencephalogram and Electrocorticogram tools and approaches that shaped the field, while "Freeman Neurodynamics" is a theoretical concept that is widely known, used, and respected among neuroscientists all over the world. His recent death is a profound loss to neuroscience and biomedical engineering...
December 2016: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/27890882/a-case-of-brugada-syndrome-which-developed-status-epilepticus
#11
Misa Matsui, Kimiko Inoue, Harutoshi Fujimura, Saburo Sakoda
A 35-year-old man showed a convulsive attack with consciousness loss and was suspected of having Brugada syndrome 6 months prior to admission to our hospital. At the initial examination, the patient showed conjugate deviation, followed by left limb convulsions and consciousness loss. He regained consciousness after 1 minute, though cardiac arrest from ventricular fibrillation was noted during an electroencephalography (EEG) examination. Sinus rhythm recovered with defibrillation, though the convulsions persisted and a Status Epilepticus developed...
November 25, 2016: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/27890881/non-convulsive-status-epilepticus-with-takotsubo-cardiomyopathy-a-case-report
#12
Jyunichi Uemura, Yuko Wada, Yoshiki Yagita
A 61-year-old woman was admitted to our hospital for speech disturbance and mild consciousness impairment. Despite the absence of seizures or loss of consciousness, electroencephalographic abnormalities were observed, and the cerebral blood flow scintigraphy revealed an increase in cerebral blood flow in the left temporal lobe. These findings suggested a diagnosis of non-convulsive status epilepticus. On the third day, a twelve-lead electrocardiogram showed a negative T-wave in I, II, aVf, and V2-6. Moreover, a transthoracic echocardiogram revealed left ventricular apical akinesis...
November 25, 2016: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/27889010/neuropsychiatric-aspects-of-concussion
#13
REVIEW
Rajiv Radhakrishnan, Amir Garakani, Lawrence S Gross, Marcia K Goin, Janet Pine, Andrew E Slaby, Calvin R Sumner, David A Baron
Over the past decade, concussion has become the most widely discussed injury in contact sports. However, concussions also occur in several other settings, such as non-contact sports, elderly individuals, young children, military personnel, and victims of domestic violence. Concussion is frequently undiagnosed as a cause of psychiatric morbidity, especially when the patient has no history of loss of consciousness or direct head trauma. Almost all of the extant literature focuses on traumatic brain injury and assumes that concussion is merely a mild form of traumatic brain injury, which has resulted in a lack of understanding about what concussion is, and how to diagnose, monitor, and treat its varied neuropsychiatric symptoms...
December 2016: Lancet Psychiatry
https://www.readbyqxmd.com/read/27878914/severe-hypoglycemia-rates-are-not-associated-with-hba1c-a-cross-sectional-analysis-of-3-contemporary-pediatric-diabetes-registry-databases
#14
Aveni Haynes, Julia M Hermann, Kellee M Miller, Sabine E Hofer, Timothy W Jones, Roy W Beck, David M Maahs, Elizabeth A Davis, Reinhard W Holl
OBJECTIVE: To examine the association between glycated hemoglobin (HbA1c) and severe hypoglycemia rates in patients with type 1 diabetes receiving usual care, by analysing data from the US Type 1 Diabetes Exchange (T1DX), German/Austrian Diabetes Patienten Verlaufsdokumenation (DPV), and Western Australian Children Diabetes Database (WACDD) diabetes registries. METHODS: Data for patients with type 1 diabetes, aged <18 years with a minimum duration of diabetes of 2 years, were extracted from each registry for a 12-month observation period between 2011 and 2012 (7,102 T1DX, 18,887 DPV, and 865 WACDD)...
November 23, 2016: Pediatric Diabetes
https://www.readbyqxmd.com/read/27875733/relationship-between-ambient-temperature-and-frequency-and-severity-of-cardiovascular-emergencies-a-prospective-observational-study-based-on-out-of-hospital-care-data
#15
Mario Hensel, Markus Stuhr, Daniel Geppert, Jan F Kersten, Jürgen Lorenz, Thoralf Kerner
OBJECTIVE: To test the hypothesis that more cardiovascular emergencies occur at low rather than at high temperatures under moderate climatic conditions. METHODS: This was a prospective observational study performed in a prehospital setting. Data from the Emergency Medical Service in Hamburg (Germany) and from the local weather station were evaluated over a 5-year period. Temperature data were matched with the associated rescue mission data. Lowess-Regression analysis was performed to assess the relationship between the temperature and the frequency of individual cardiovascular emergencies...
November 8, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27869560/syncope-seizure-or-both
#16
Paraskevi Koutrolou-Sotiropoulou, Abhijeet Singh, Mason Leeman-Markowski, Eric J Rashba
Ictal asystole (IA) is a rare phenomenon in patients with seizures with an incidence of 0.27-0.4% and has been proposed as a possible mechanism of sudden unexpected death in epilepsy patients (SUDEP). We present a case of a 53-year-old woman who initially presented with episodes of expressive aphasia and was treated with antiepileptic drugs (AEDs). While on therapy she experienced episodes of syncope. During her hospitalization for tapering of AEDs and 24-hour EEG monitoring, the patient developed a seizure followed by sinus bradycardia and an 18-second sinus pause, resulting in loss of consciousness and slowing of cerebral activity...
November 21, 2016: Acute Cardiac Care
https://www.readbyqxmd.com/read/27858381/fatal-rupture-of-dissecting-anterior-inferior-cerebellar-artery-aneurysm-as-an-unexpected-complication-after-anterior-skull-base-surgery-a-case-report
#17
Eyyub S Al-Beyati, Ihsan Dogan, Agahan Ünlü, Melih Bozkurt
Aneurysm of the anterior inferior cerebellar artery (AICA) is a very rare entity and the manifestation and manipulation of such aneurysms remain contentious. In this paper, we report a case where a successful surgery for an olfactory groove meningioma was performed and the patient discharged but readmitted to hospital with loss of consciousness and subsequently passed away three hours after re-admission. The patient was diagnosed with subarachnoid hemorrhage. The cause of the fatal subarachnoid hemorrhage was rupture of a new onsetting AICA dissecting aneurysm which had provided neither clinical nor radiological signs before the operation...
October 13, 2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27855547/traumatic-brain-injury-history-is-associated-with-earlier-age-of-onset-of-alzheimer-disease
#18
Christian LoBue, Hannah Wadsworth, Kristin Wilmoth, Matthew Clem, John Hart, Kyle B Womack, Nyaz Didehbani, Laura H Lacritz, Heidi C Rossetti, C Munro Cullum
OBJECTIVE: This study examined whether a history of traumatic brain injury (TBI) is associated with earlier onset of Alzheimer disease (AD), independent of apolipoprotein ε4 status (Apoe4) and gender. METHOD: Participants with a clinical diagnosis of AD (n = 7625) were obtained from the National Alzheimer's Coordinating Center Uniform Data Set, and categorized based on self-reported lifetime TBI with loss of consciousness (LOC) (TBI+ vs. TBI-) and presence of Apoe4...
November 18, 2016: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/27855459/-port-catheter-associated-superior-vena-cava-syndrome-in-a-patient-with-rectum-cancer
#19
Nikolai Schuelper, Jakob von Herder, Antonius Flohr, Gerald Wulf, Sabine Blaschke
History and clinical findings | A 59-year-old man with metastasized rectum cancer presents at the interdisciplinary emergency care unit with a distinct cyanosis of his face. At that moment the patient himself is out of any complaints. Cyanosis is spreading from his face over his neck to both arms. During the last months he has been treated with folinic acid, 5-fluoruracil, irinotecan and aflibercept via a port-catheter. Except for smoking his further medical history is unremarkable. Examinations | CT-scan shows a port-catheter associated thrombosis with a consecutive superior vena cava syndrome (SCVS)...
November 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27853537/global-field-synchronization-reveals-rapid-eye-movement-sleep-as-most-synchronized-brain-state-in-the-human-eeg
#20
Peter Achermann, Thomas Rusterholz, Roland Dürr, Thomas König, Leila Tarokh
Sleep is characterized by a loss of consciousness, which has been attributed to a breakdown of functional connectivity between brain regions. Global field synchronization (GFS) can estimate functional connectivity of brain processes. GFS is a frequency-dependent measure of global synchronicity of multi-channel EEG data. Our aim was to explore and extend the hypothesis of disconnection during sleep by comparing GFS spectra of different vigilance states. The analysis was performed on eight healthy adult male subjects...
October 2016: Royal Society Open Science
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