Cardiac Autonomic Dysfunction and Incidence of de novo Atrial Fibrillation: Heart Rate Variability vs. Heart Rate Complexity

Heart Rate Variability, Heart Rate Recovery, and Heart Rate Turbulence Represent Different Components of the Cardiac Autonomic Nervous System

Increased randomness of heart rate could explain increased heart rate variability preceding onset of atrial fibrillation.

The purpose of this article is to discuss the relationship between sympathovagal dysfunction and the occurrence of paroxysmal atrial fibrillation. Onset of atrial fibrillation is subject to circadian variation; shorter episodes occur more frequently during the day, whereas longer episodes occur less frequently at night. Vagally mediated atrial fibrillation typically is preceded by bradycardia, ...

Heart Rate Variability for Quantification of Autonomic Dysfunction in Fibromyalgia.

OBJECTIVE To quantify autonomic dysfunction in fibromyalgia patients compared to healthy controls using heart rate variability (HRV). METHODS Sixteen patients with fibromyalgia and 16 healthy controls were recruited in this case control study. HRV was measured using the time-domain method incorporating the following parameters: total heartbeats, the mean of intervals between consecutive heart...

Abnormal heart rate variability and atrial fibrillation after aortic surgery

INTRODUCTION Complete denervation of transplanted heart exerts protective effect against postoperative atrial fibrillation; various degrees of autonomic denervation appear also after transection of ascending aorta during surgery for aortic aneurysm. OBJECTIVE This study aimed to evaluate if the level of cardiac denervation obtained by resection of ascending aorta could exert any effect on pos...

Heart Rate Variability and P Wave Characteristics after Atrial Fibrillation

Correspondence to: Dr. Victor Dan Moga, e-mail: [email protected]. SUMMARY: Despite the development of pharmacological therapy and/or device therapy, atrial fibrillation remains a leading cause for morbidity and mortality. Heart rate variability (HRV) is studied only in the presence of sinus rhythm. Currently, three different categories of methods in HRV analysis are being used; the time do...