ProHealth me-cfs Vitamin and Natural Supplement Store and Health
Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help

|
|

Trending News

The Muscle-Brain Connection in ME/CFS Revealed

The Neurobiology of ME/CFS

Interview: Jennifer Brea Talks About Obstacles, Adjustments, and Inspiration

Adrenal Burnout? Naturally Boost Your Energy & Manage Stress

DNA Methylation Modifications Associated with Chronic Fatigue Syndrome

Smartphone app and specialised clinic for chronic fatigue patients

Curcumin Made 65X More Bioavailable - Modern Take on a "Golden" Spice Busts Brain Fog, Joint & Body ...

VIDEO: Dr. Newton Talks About Biomarkers and the Future of ME/CFS Treatment

Stress management skills, cortisol awakening response, and post-exertional malaise in Chronic Fatigu...

Irritable bowel syndrome and chronic fatigue six years after Giardia infection: a controlled prospec...

 
Print Page
Email Article

Comorbidity of postural orthostatic tachycardia syndrome and chronic fatigue syndrome in an Australian cohort

  [ 2 votes ]   [ Discuss This Article ]
By G.K. Reynolds et al. • www.ProHealth.com • June 9, 2014


By G.K. Reynolds et al.

Abstract

OBJECTIVE: Patients with chronic fatigue syndrome (CFS) are frequently diagnosed with comorbid postural orthostatic tachycardia syndrome (POTS), suggesting a shared pathogenesis. The aim of this study was to examine the relationship between demographic characteristics, autonomic functioning and fatigue levels amongst CFS patients with and without comorbid POTS.

DESIGN AND SETTING: All patients presenting to the CFS Discovery Clinic between 2009 and 2012 completed a 20-min standing task as part of their initial assessment. Heart rate and pulse pressure were recorded at baseline, at 2-min intervals poststanding, at the end of the task and following a recovery period. Average heart rate and pulse pressure variability were calculated from this data.

Age, gender, length of illness and self-reported fatigue scores were also recorded. POTS patients were diagnosed by an orthostatic increase in heart rate >30 beats per min, concomitant symptoms of orthostatic intolerance and no orthostatic hypotension. Differences in autonomic functioning between POTS and CFS patients were compared using independent samples t-tests, whilst logistic and linear regressions were performed to examine the contribution of autonomic functioning to task completion and perceived fatigue, respectively.

RESULTS: Comorbidity of CFS and POTS (CFS-POTS) was observed in 11% (33/306) of patients. CFS-POTS patients were significantly younger (P < 0.001), had a shorter length of illness (P = 0.034), experienced greater task difficulty (P = 0.002) and were able to stand for significantly shorter periods compared to the CFS-only patients (P < 0.001). CFS-POTS patients experienced significantly lower baseline diastolic blood pressure (P = 0.002), significantly higher heart rate and lower pulse pressures at each standing measurement. Early heart rate changes (P = 0.002) and overall heart rate change (P < 0.001) were significant predictors of completion status, whereas heart rate variability (P < 0.001) and female gender (P < 0.001) were significant predictors of increased perceived task difficulty.

CONCLUSIONS: Haemodynamic and demographic differences between CFS-POTS and CFS-only patients suggest that the former group reflects a distinct subgroup of the CFS population. The findings highlight the utility of screening younger patients with fatigue for POTS, and identified heart rate variability as an important marker of fatigue for CFS patients in general.

Source: Reynolds GK, Lewis DP, Richardson AM, Lidbury BA. Comorbidity of postural orthostatic tachycardia syndrome and chronic fatigue syndrome in an Australian cohort.  J Intern Med. 2014 Apr;275(4):409-17. doi: 10.1111/joim.12161. Epub 2013 Nov 29.
 
© 2013 The Association for the Publication of the Journal of Internal Medicine.
 


Please Discuss This Article:   Post a Comment 



[ Be the first to comment on this article ]




 
Free Chronic Fatigue Syndrome and Fibromyalgia Newsletters
Subscribe to
Our FREE
Newsletter
Subscribe Now!
Receive up-to-date ME/CFS & Fibromyalgia treatment and research news
 Privacy Guaranteed  |  View Archives

Save on Your Next Order

Featured Products

Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%
MitoQ® MitoQ®
Powerful Antioxidant Support to Mitochondria
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
B-12 Extreme™ B-12 Extreme™
The Most Potent Vitamin B-12 on Earth
Hydroxocobalamin Extreme™ Hydroxocobalamin Extreme™
The B-12 your brain needs for detox & sharpness

Natural Remedies

Repair Damaged Mitochondria and Reduce Fatigue Up to 45% Repair Damaged Mitochondria and Reduce Fatigue Up to 45%
Undenatured Type II Collagen - Chicken Soup for Your Joints Undenatured Type II Collagen - Chicken Soup for Your Joints
The Most Powerful Natural Antioxidant Discovered to Date - Hydroxytyrosol The Most Powerful Natural Antioxidant Discovered to Date - Hydroxytyrosol
Dreaming of a Good Night's Sleep? Dreaming of a Good Night's Sleep?
Rejuvenating the Brain - How PQQ Helps Power Up Mental Processing Rejuvenating the Brain - How PQQ Helps Power Up Mental Processing

FIBROMYALGIA RESOURCES
What is Fibromyalgia?
Fibromyalgia 101
Fibromyalgia Symptoms
Fibromyalgia Treatments
| CFS RESOURCES
What is CFS?
ME/CFS 101
ME/CFS Symptoms
ME/CFS Treatments
| FORUMS
Fibromyalgia
ME/CFS
ADVANCED MEDICAL LABS
WHOLESALE  |  AFFILIATES
GUARANTEE
CONTACT US
PRIVACY
RSS
SITE MAP
ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus
Credit Card Processing