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Clinical Reasoning: Hyperventilation-Induced Alternating Hemiplegia With Concomitant Hemispheric EEG Slowing in a 7-Year-Old Girl With Headache.
Neurology
September 2024
From the Innovation Biomedicine Section (J.P., A.C., G.C., D.F.), Department of Engineering for Innovation Medicine, University of Verona; UOC Neuropsichiatria Infantile (J.P., R.D.C., S.S., A.C., T.L.B., G.C., E.F., E.F., D.F.), Dipartimento Materno-Infantile, Azienda Ospedaliero-Universitaria Integrata, Verona, Italy; Dipartimento di Neuroradiologia (A.B., M.P.), Azienda Ospedaliera Universitaria Integrata Verona, Ospedale Civile Maggiore, Borgo Trento, Verona; Department of Neuroscience and Surgery of the Nervous System (A.L.), Papa Giovanni XXIII Hospital, Bergamo; Neuropsichiatria Infantile (F.P.), IRCCS "Sacro Cuore-Don Calabria" Hospital, Negrar, Verona; and Center for Research on Epilepsies in Pediatric Age (CREP) (G.C., E.F., E.F., B.D.B., D.F.), Verona, Italy.
Article Synopsis
- A 7-year-old girl with a history of headaches experienced unusual neurological symptoms after episodes of hyperventilation, including aphasia and weakness on one side of her body.
- Despite her family history of migraines and seizures, her neurologic exam remained normal, but EEG tests showed abnormal brain wave patterns linked to her symptoms.
- The case suggests an important link between hyperventilation and rare cerebrovascular disorders, emphasizing the need for thorough EEG analysis in diagnosing such conditions.
Oscillatory cerebral blood flow is associated with impaired neurocognition and functional hyperemia in postural tachycardia syndrome during graded tilt.
Hypertension
March 2015
From the Departments of Pediatrics (J.M.S., A.T.D.P., A.P., Z.R.M., C.T., M.S.M.) and Physiology (J.M.S., M.S.M.), New York Medical College, Valhalla.
We hypothesize that upright cognitive impairment in patients with postural tachycardia syndrome (POTS) is caused by reduced cerebral blood flow (CBF). The CBF velocity (CBF(v)) measured by transcranial Doppler ultrasound decreased excessively during 70° tilt in a minority of patients with intermittent hyperpnea/hypocapnia. Incremental tilt showed no difference in mean CBF(v).
View Article and Find Full Text PDFAlterations in Polysomnographic (PSG) profile in drug-naïve Parkinson's disease.
Ann Indian Acad Neurol
July 2014
Department of Neurology, National Institute of Mental Health and Neurosciences, Bangalore, Karnataka, India.
Objective: We studied the changes in Polysomnographic (PSG) profile in drug-naïve patients of Parkinson's disease (PD) who underwent evaluation with sleep overnight PSG.
Materials And Methods: This prospective study included 30 with newly diagnosed levodopa-naïve patients with PD, fulfilling the UK-PD society brain bank clinical diagnostic criteria (M:F = 25:5; age: 57.2 ± 10.
Intravenous adenosine activates diffuse nociceptive inhibitory controls in humans.
J Appl Physiol (1985)
September 2013
Assistance Publique - Hôpitaux de Paris, Groupe Hospitalier Pitié Salpêtrière Charles Foix, Service de Pneumologie et Réanimation Médicale, Paris, France;
Experimentally induced pain can be attenuated by concomitant heterotopic nociceptive stimuli (counterirritation). Animal data indicate that this stems from supraspinal "diffuse noxious inhibitory controls" (DNICs) triggered by C and Aδ fibers. In humans, only noxious stimuli induce counterirritation.
View Article and Find Full Text PDFThe effects of hyperpnea on exhaled nitric oxide synthesis in normal subjects.
Chest
November 2005
Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, MetroHealth Medical Center, Cleveland, OH 44109, USA.
Study Objectives: To determine if the concentration of nitric oxide (NO) in the lungs increases with hyperpnea by contrasting calculated production (ie, the product of the fractional expired NO concentration [FeNO] and minute ventilation [Ve]) [Vno] with the amount of NO in equilibrium with the conducting airways (eNOair) and the amount of NO diffusing from the alveoli (eNOalv).
Design: Observational study.
Setting: University teaching hospital.
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