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Attenuated cardiac autonomic function in patients with long-COVID with impaired orthostatic hemodynamics.
Clin Auton Res
January 2025
Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary, GAC70 HRIC Building, 3280 Hospital Dr NW, Calgary, AB, T2N 4Z6, Canada.
Purpose: Long-coronavirus disease (long-COVID) is associated with initial orthostatic hypotension and postural orthostatic tachycardia syndrome. Whether altered autonomic tone underlies these abnormalities is unknown. We compared autonomic function between patients with long-COVID and healthy controls, and within patients with long-COVID with different orthostatic hemodynamic phenotypes.
View Article and Find Full Text PDFProgressive Increase in Renal Sympathetic Nerve Activity Induced by Cold Exposure.
Hypertension
January 2025
Department of Environmental Health, Life Science and Human Technology, Nara Women's University, Japan.
Background: Exposure to cold environments is linked to cold-induced hypertension due to activated sympathetic nerve activity (SNA) and arterial baroreceptor reflex dysfunction. However, direct measurement of SNA during cold-induced hypertension and changes in baroreflex control of SNA remain unexplored.
Methods: Chronically instrumented rats were exposed to cold temperatures (10 °C) over 4 days after a control period (24 °C), and renal and lumbar sympathetic nerve activities were simultaneously measured during cold-induced hypertension.
Autonomic Reflexes With Epipharyngeal Abrasive Therapy (EAT).
Cureus
January 2025
Otolaryngology, Ito ENT Clinic, Funabashi, JPN.
A literature review was conducted of epipharyngeal abrasive therapy (EAT) in the treatment of chronic epipharyngitis, focusing on the mechanism of action by autonomic nerve stimulation. The mechanism of action of EAT in stimulating the immune system has recently become clear. However, the mechanism of action of EAT on the autonomic nervous system remains to be elucidated.
View Article and Find Full Text PDFHyperbaric oxygen therapy for paroxysmal sympathetic hyperactivity syndrome after brain injury: a multicenter, retrospective cohort study.
Med Gas Res
June 2025
Department of Emergency Medicine, The Fifth Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, Henan Province, China.
Hyperbaric oxygen has been used to treat many diseases. However, there are few reports on hyperbaric oxygen treatment for paroxysmal sympathetic hyperactivity at home and abroad, and the clinical experience is very limited. To understand the efficacy of hyperbaric oxygen treatment for paroxysmal sympathetic hyperactivity after brain injury, this retrospective study was conducted in the adult intensive care units of five medical centers in central China.
View Article and Find Full Text PDFElectrophisiological monitoring of pain in non-communicative critically ill patients.
Enferm Intensiva (Engl Ed)
January 2025
Grupo de Trabajo de Analgesia, Sedación, Contenciones y Delirio de la Sociedad Española de Enfermería Intensiva y Unidades Coronarias (GT-ASCyD-SEEIUC), Spain; Área del paciente crítico, Reanimación y Anestesia, Hospital Universitario de Girona Dr. Josep Trueta, Girona, Spain; Departamento de Enfermería, Universitat de Girona (UdG), Girona, Spain.
Electrophysiological monitoring of pain provides objective measures that allow for pain control and adjustment of analgesia in non-communicative patients. Among the available electrophysiological devices, automated infrared pupillometry, Analgesia Nociception Index (ANI), and Nociception Level Index (NOL®) stand out. These non-invasive measurement systems analyze the sympathetic or parasympathetic nervous system response to painful stimuli by observing pupillary dilatation and reactivity (pupillometry), heart rate during respiration (ANI), or a combination of multiple parameters from the nociceptive-autonomic medullary circuit (NOL®).
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