Related Experiment Video

Updated: Mar 19, 2026

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
08:10

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Published on: July 20, 2022

2.2K

Correlation between impedance cardiography and 6 min walk distance in atrial fibrillation patients

Ling Ding1, Xiao-Qing Quan1, Shu Zhang1

  • 1Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.

BMC Cardiovascular Disorders
|June 11, 2016
PubMed

Insights

This study found that cardiac output measured by impedance cardiography positively correlates with the 6-minute walk distance in atrial fibrillation patients. This finding may help assess exercise capacity in AF patients.

Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • The relationship between impedance cardiography (ICG) and 6-minute walk distance (6MWD) in atrial fibrillation (AF) patients is not well understood.
  • AF is a common arrhythmia affecting cardiac function and exercise capacity.

Purpose of the Study:

  • To investigate the correlation between hemodynamic parameters measured by ICG and 6MWD in patients with AF.
  • To compare hemodynamic profiles and exercise capacity between AF patients and controls.

Main Methods:

  • 49 subjects (21 AF, 28 controls) were recruited.
  • Hemodynamic parameters (CO, SV, SVR, etc.) and 6MWD were measured.
  • Pearson correlation analysis was used to assess relationships.

Main Results:

  • AF patients exhibited lower cardiac output (CO), higher systemic vascular resistance index (SSVRI), and reduced 6MWD compared to controls.
  • NT-pro brain natriuretic peptide (NT-pro BNP) levels were significantly higher in the AF group.
  • CO, stroke volume (SV), left stroke work (LSW), and left stroke work index (LSWI) positively correlated with 6MWD in AF patients.

Conclusions:

  • AF patients have impaired hemodynamics and reduced exercise capacity compared to those in sinus rhythm.
  • ICG-derived CO is a significant positive predictor of 6MWD in AF patients, suggesting its utility in assessing functional status.
Abstract

Keywords:
6 min walk distanceAtrial fibrillationImpedance cardiography

More Related Videos

Cutoff Value of Phase Angle by Bioelectrical Impedance Analysis at Admission as a Prognostic Factor in Patients with Acute Heart Failure05:16

Cutoff Value of Phase Angle by Bioelectrical Impedance Analysis at Admission as a Prognostic Factor in Patients with Acute Heart Failure

Published on: June 10, 2025

750
Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test10:21

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test

Published on: September 22, 2023

1.1K

Related Concept Videos

Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
14.4K
Electrocardiogram01:29

Electrocardiogram

An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
7.5K