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Disorders of the Autonomic Nervous System

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Related Experiment Video

Updated: May 8, 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

The relationship between atrial septal aneurysm and autonomic dysfunction.

Mehmet Demir1

  • 1Department of Cardiology, Bursa Yüksek İhtisas Education and Research Hospital, Bursa, Turkey.

Experimental and Clinical Cardiology
|August 14, 2013
PubMed
Summary

Patients with atrial septal aneurysm (ASA) exhibit impaired cardiac autonomic function, indicated by reduced heart rate variability (HRV). This dysfunction may contribute to arrhythmias in ASA patients.

Keywords:
ArrhythmiaAtrial septal aneurysmAutonomic nerve systemHeart rate variability

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Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
07:41

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

Published on: February 8, 2022

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Last Updated: May 8, 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

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
07:41

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

Published on: February 8, 2022

Area of Science:

  • Cardiology
  • Autonomic Neuroscience

Background:

  • Atrial septal aneurysm (ASA) is linked to systemic thromboembolism and atrial dysfunction.
  • Paroxysmal atrial fibrillation is more prevalent in ASA patients, with the autonomic nervous system implicated in its onset.

Purpose of the Study:

  • To compare autonomic function between patients with ASA and healthy volunteers.
  • To assess the impact of autonomic dysfunction on atrial and ventricular arrhythmias in ASA.

Main Methods:

  • Forty ASA patients and 30 healthy controls underwent echocardiography.
  • Autonomic function was evaluated using heart rate variability (HRV) indexes.

Main Results:

  • ASA patients demonstrated significantly lower time and frequency domain HRV indexes compared to controls (P<0.001).
  • Significant differences in other HRV indexes were observed between the groups.

Conclusions:

  • Atrial septal aneurysm is associated with cardiac autonomic dysfunction.
  • The precise mechanisms underlying this association require further investigation.