Heart Rate and QT interval Variability in Multiple Sclerosis: Evidence for Decreased Sympathetic Activity
Journal Title: Journal of Neurological Sciences-Turkish - Year 2006, Vol 23, Issue 4
Abstract
Decreased beat-to-beat heart rate variability (HR) and increased beat-to-beat QT interval variability are associated with significant cardiovascular mortality. The aim of this study was to compare beat-to-beat HR and QT variability among patients with multiple sclerosis (MS) and normal controls to investigate cardiac autonomic function. We investigated spectral measures of HR and QT interval variability in 13 patients with MS and 16 normal controls during sleep. Our results showed modest but significant decreases in HR total power (TP: 0-0.5 Hz), VLF power (very low frequency power: 0-0.04 Hz) and LF power (low frequency: 0.14-0.5 Hz) in patients with MS compared to normal controls. QT interval TP, VLF, LF and HF powers were all highly significantly lower (p
Authors and Affiliations
Micahel BONNETT, Janet MULCARE, Thomas MATHEWS, Satyendra GUPTA, Nizam AHMED, Vikram YERAGANI
Keywords
Related Articles
- EP ID EP102004
- DOI -
- Views 96
- Downloads 0
Ağır Koah'li Hastalarda Kantitatif EEG Analizi: Kronik Hipoksemik Dejenerasyona Ait İpuçları
Amaç: Bu kesitsel klinik ve elektrofizyolojik çalışma ağır KOAH’lı hastalarda kognitif bozulmanın elektrofizyolojik gösterglerini kantitatif EEG (KEEG) yardımı ile belirlemek amacı ile yapıldı. Gereç ve yöntem: 33 ağır...
Persistent Limb Dystonia in a HIV Positive Patient With Cerebral Toxoplasmosis
We describe a HIV positive woman who developed a left forearm dystonia associated to bilateral basal ganglia lesions, proven to be secondary to cerebral toxoplasmosis as demonstrated by Brain Magnetic Resonance Imaging (...
A Case of Epidural Lipomatosis With Lumbar Canal Stenosis
Objective: Idiopathic symptomatic spinal epidural lipomatosis is not a common clinical condition. There are a few cases reported in the literature discussing the magnetic resonance imaging (MRI) findings of epidural lipo...
Inversion Of Chromosome 15 In A Family With Benign Familial Infantile Seizures
Recent molecular cytogenetic studies have elucidated the origin and nature of extra structurally abnormal chromosomes or small supernumerary chromosomes, which are often associated with developmental delay and malformati...
A Cross Sectional Analysis Vitamin B12 and Folic Acid Levels in Neurology and Psychiatry Outpatient's
Objective: Vitamin B12 (VB12) and folic acid (FA) deficiencies may be subtle and unrecognized and cause various neuropsychiatric problems. Serum levels of VB12, FA and distribution patterns in a broad range of hospital a...