ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

10 Fibro-Friendly Foods with a Bonus: Beautiful Skin

Studies Show that Magnesium L-threonate Improves Brain Plasticity, Leading to Direct and Significant...

Clary Sage Oil May Be Pricey, but Its Benefits Are Priceless

Pumpkin Pie Turmeric Breakfast Smoothie - Vegan + Gluten-Free

Component of red wine, grapes can help to reduce inflammation, study finds

Poly MVA: A Novel Therapy for Increasing Energy, Repairing DNA, and Promoting Overall Health

Vitamin D supplementation extends life in mouse model of Huntington's disease

Omega-3 fatty acid stops known trigger of lupus

Conquer Your Email Inbox, Increase Productivity and Reduce Stress

The Significance of Selenium

Print Page
Email Article

Neurally mediated hypotension & autonomic dysfunction measured by heart rate variability during head-up tilt testing in children with Chronic Fatigue Syndrome (CFS)

  [ 30 votes ]   [ Discuss This Article ]
By Stewart J, Weldon A, Arlievsky N, Li K, Munoz J • • August 10, 1998

Recent investigations suggest a role for neurally mediated
hypotension (NMH) in the symptomatology of chronic fatigue
syndrome (CFS) in adults. Our previous observations in
children with NMH and syncope (S) unrelated to CFS indicate
that the modulation of sympathetic and parasympathetic tone
measured by indices of heart rate variability (HRV) is
abnormal in children who faint during head-up tilt (HUT). In
order to determine the effects of autonomic tone on HUT in
children with CFS we performed measurements of HRV during HUT
in 16 patients aged 11-19 with CFS. Data were compared to 26
patients evaluated for syncope and with 13 normal control
subjects. After 30 minutes supine, patients were tilted to 80
degrees for 40 minutes or until syncope occurred. Time domain
indices included RR interval, SDNN, RMSSD, and pNN50. An
autoregressive model was used to calculate power spectra. LFP
(.04-.15 Hz), HFP (.15-.40Hz), and TP (.01-.40Hz). Data were
obtained supine (baseline) and after HUT. Thirteen CFS
patients fainted (CFS+, 5/13 pure vasodepressor syncope) and
three patients did not (CFS-). Sixteen syncope patients
fainted (S+, all mixed vasodepressor- cardioinhibitory) and 10
did not (S-). Four control patients fainted (Control+, all
mixed vasodepressor-cardioinhibitory) and nine did not
(Control-). Baseline indices of HRV were not different between
Control+ and S+, and between Control- and S-, but were
depressed in S+ compared to S-. HRV indices were strikingly
decreased in CFS patients compared to all other groups. With
tilt, SDNN, RMSSD, and pNN50 and spectral indices decreased in
all groups, remaining much depressed in CFS compared to S or
control subjects. With HUT, sympathovagal indices (LFP/HFP,
nLFP, and nHFP) were relatively unchanged in CFS, which
contrasts with the increase in nLFP with HUT in all other
groups. With syncope RMSSD, SDNN, LFP, TP, and HFP increased
in S+ (and Control+), suggesting enhanced vagal heart rate
regulation. These increases were not observed in CFS+
patients. CFS is associated with NMH during HUT in children.
All indices of HRV are markedly depressed in CFS patients,
even when compared with already low HRV in S+ or Control+
patients. Sympathovagal balance does not shift toward enhanced
sympathetic modulation of heart rate with HUT and there is
blunting in the overall HRV response with syncope during HUT.
Taken together these data may indicate autonomic impairment in
patients with CFS.

Post a Comment

Featured Products From the ProHealth Store
Vitamin D3 Extreme™ Optimized Curcumin Longvida® Energy NADH™ 12.5mg

Looking for Vitamins, Herbs and Supplements?
Search the ProHealth Store for Hundreds of Natural Health Products

Article Comments

Be the first to comment on this article!

Post a Comment

Natural Pain Relief Supplements

Featured Products

Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
Optimized Curcumin Longvida® Optimized Curcumin Longvida®
Supports Cognition, Memory & Overall Health
Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils

Natural Remedies

Herbal Inflammation Management for Whole Body Health Herbal Inflammation Management for Whole Body Health
Three-Step Strategy to Reverse Mitochondrial Aging Three-Step Strategy to Reverse Mitochondrial Aging
D-ficient? Health Risks You Need to Know About D-ficient? Health Risks You Need to Know About
Herbal Rescue for High Blood Sugar Herbal Rescue for High Blood Sugar
A Hard-Working Molecule that May Help Ease Pain & Brighten Mood A Hard-Working Molecule that May Help Ease Pain & Brighten Mood

ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
Credit Card Processing
Be the first to know about new products, special discounts and the latest health news. *New subscribers only

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2016 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map