Matúš Jurík, Pavel Siarnik, Katarína Valovičová, Patrik Karapin, Katarina Klobucnikova, Eter Turčáni, Branislav Kollar
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引用次数: 0
Abstract
Background and objective: Sleep-disordered breathing (SDB) is more prevalent in patients with stroke than in the population without a history of stroke. SDB is an independent risk factor for stroke. SDB impairs cerebral circulation by several mechanisms, and therefore possibly contributes to wake-up stroke. Ultrasound-tagged near-infrared spectroscopy (UT-NIRS) is a novel technology able to detect cerebral blood flow noninvasively and in real-time, displaying cerebral flow as cerebral flow index (CFI). Positive airway pressure (PAP) is the most effective approach in the treatment of SDB. We aimed to assess if single-night PAP impacts cerebral blood flow in sleep apnea patients after stroke and without a history of stroke.
Materials and methods: 11 stroke patients and six controls with sleep apnea were enrolled. Stroke patients underwent overnight pulse oximetry within seven days after stroke. Desaturation index ≥ 15/hour was considered a positive screening. Six weeks after stroke, patients with positive screening underwent overnight polysomnography together with cerebral blood flow monitoring using UT-NIRS (diagnostic night) and also with additional PAP therapy (therapeutic night).
Results: The number of respiratory events decreased significantly in the group of stroke patients (apnea-hypopnea index [AHI] from 22.6±9.0 to 9.9±9.9) and controls (AHI from 58.1±14.9 to 7.0±9.7). CFI showed no significant changes between a diagnostic and therapeutic night in both groups.
Conclusion: Despite the significant reduction of respiratory events, single-night PAP therapy does not improve overall cerebral blood flow, as defined by CFI.
期刊介绍：
Neuroendocrinology Letters is an international, peer-reviewed interdisciplinary journal covering the fields of Neuroendocrinology, Neuroscience, Neurophysiology, Neuropsychopharmacology, Psychoneuroimmunology, Reproductive Medicine, Chronobiology, Human Ethology and related fields for RAPID publication of Original Papers, Review Articles, State-of-the-art, Clinical Reports and other contributions from all the fields covered by Neuroendocrinology
Letters.
Papers from both basic research (methodology, molecular and cellular biology, anatomy, histology, biology, embryology, teratology, normal and pathological physiology, biophysics, pharmacology, pathology and experimental pathology, biochemistry, neurochemistry, enzymology, chronobiology, receptor studies, endocrinology, immunology and neuroimmunology, animal physiology, animal breeding and ethology, human ethology, psychology and others) and from clinical research (neurology, psychiatry and child psychiatry, obstetrics and gynecology, pediatrics, endocrinology, immunology, cardiovascular studies, internal medicine, oncology and others) will be considered.
The Journal publishes Original papers and Review Articles. Brief reports, Special Communications, proved they are based on adequate experimental evidence, Clinical Studies, Case Reports, Commentaries, Discussions, Letters to the Editor (correspondence column), Book Reviews, Congress Reports and other categories of articles (philosophy, art, social issues, medical and health policies, biomedical history, etc.) will be taken under consideration.
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