Related Experiment Video
Updated: Jun 22, 2026
08:12
Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
[Heart rate variability in patients with neurocardiogenic syncopes]
Terapevticheskii Arkhiv
|June 23, 2009
Summary
Heart rate variability (HRV) analysis reveals distinct patterns in neurocardiogenic syncope (NCS) patients, showing reduced circadian HRV and prevailing parasympathetic activity. These HRV characteristics aid in diagnosing and managing NCS variants.
Area of Science:
- Cardiology
- Autonomic Nervous System Physiology
- Medical Diagnostics
Context:
- Neurocardiogenic syncope (NCS) is a common cause of transient loss of consciousness.
- Heart rate variability (HRV) reflects autonomic nervous system (ANS) function and has prognostic value.
- Understanding HRV in different NCS subtypes is crucial for diagnosis and management.
Purpose:
- To investigate chronotropic heart regulation and the prognostic significance of HRV in patients with neurocardiogenic syncope (NCS).
- To analyze HRV patterns in patients with cardioinhibitory, vasodepressive, and mixed NCS subtypes.
- To determine the diagnostic and prognostic utility of HRV in NCS.
Summary:
- A study of 90 individuals (65 NCS patients, 25 controls) analyzed HRV using head-up tilt table tests.
- Cardioinhibitory NCS showed slow heart rate and altered HRV parameters (increased Amo and RD).
- All NCS types exhibited reduced circadian HRV and prevailing parasympathetic activity, with mixed NCS showing intermediate HRV patterns.
Impact:
- HRV analysis provides a valuable tool for diagnosing and monitoring neurocardiogenic syncope.
- Distinct HRV profiles in NCS variants can inform personalized treatment strategies.
- This research contributes to understanding the pathophysiology of NCS and its autonomic basis.
More Related Videos
Related Concept Videos
01:18Dysrhythmias IV: Characteristics of Bradyarrhythmias
Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
01:29Dysrhythmias III: Characteristics of Dysrhythmias
Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per minute.
01:30Factors Influencing Heart Rate
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
01:28Dysrhythmias II: Classification of Tachyarrhythmias
Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
01:29Disturbances in Heart Rhythm
Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
01:30Dysrhythmias V: Evaluating Dysrhythmias
Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...