Autonomic dysfunction in cardiac amyloidosis assessed by heart rate variability and heart rate turbulence

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

Autonomic functions in acrocyanosis assessed by heart rate variability.

OBJECTIVE To evaluate the autonomic activity of patients with acrocyanosis by using heart rate variability indices. MATERIAL AND METHODS The study group consisted of 24 patients with acrocyanosis and the control group contained 22 sex- and age-matched healthy subjects. All subjects underwent 24-hour Holter monitoring. Among the heart rate variability (HRV) parameters, time-domain and frequenc...

Impact of Menstrual Cycle on Cardiac Autonomic Function Assessed by Heart Rate Variability and Heart Rate Recovery

OBJECTIVE The purpose of the present study was to investigate autonomic tone during the follicular and luteal phases of the menstrual cycle using heart rate variability (HRV) and heart rate recovery (HRR) in healthy women. SUBJECTS AND METHODS Thirty women aged 22-37 years with regular menstrual cycles were included in the study. The HRV and HRR were measured at the follicular and luteal phas...

Assessment of Autonomic Function with Heart Rate Turbulence and Heart Rate Variability in Young Obese Patients

Background: Sudden cardiac death (SCD) is a main cause of cardiovascular mortality in developed countries. Obesity-related impairment of the cardiovascular system may be exist even at the young age, and progress asymptotical for decades before clinical manifestations present in. Death may be sudden in obese individuals with or without arrhythmias Heart rate turbulence (HRT) and Heart rate varia...

Autonomic Dysfunction and Risk Stratification Assessed from Heart Rate Pattern

The modulation of the autonomic nervous system (ANS) under physiological and pathophysiological conditions is in focus of recent research. Many patients with cardio- and cerebrovascular diseases display features of sympathovagal dysregulation. Measuring specific ANS parameters could improve risk stratification. Thus, the early diagnosis of ANS dysfunction in these patients poses a great challen...