Premature ventricular contraction patterns associated with nonsustained ventricular tachycardia.
Juan F Rodriguez-Riascos1, Whilman G Rodriguez1, Carlos A Porras-Meza1
1IPS Colsubsidio Calle 63, Non-invasive Cardiology Department, Bogotá, Colombia.
Journal of Electrocardiology
|October 10, 2024
Summary
Nonsustained ventricular tachycardia (NSVT) is linked to poor outcomes. A high premature ventricular contraction (PVC) burden, triplets, and a premature beat ratio >0.5 predict NSVT occurrence in patients with frequent PVCs.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Diagnostics
Background:
- Nonsustained ventricular tachycardia (NSVT) occurrence is linked to adverse patient outcomes.
- The association between specific electrocardiographic characteristics of premature ventricular contractions (PVCs) and NSVT occurrence remains unclear.
- Identifying predictors of NSVT is crucial for risk stratification in patients with frequent PVCs.
Purpose of the Study:
- To identify specific electrocardiographic patterns of PVCs associated with NSVT.
- To investigate the relationship between PVC burden, coupling interval, compensatory pause, and NSVT.
- To determine predictors of NSVT in patients undergoing 24-h ECG monitoring with a high PVC burden.
Main Methods:
- Retrospective, observational, cross-sectional study design.
- Analysis of 24-h ECG monitoring data from patients with ≥10 PVCs/h.
- Multivariate logistic regression to identify independent predictors of NSVT.
Main Results:
- A total of 343 patients were analyzed; 72 experienced NSVT.
- A novel metric, the "premature beat ratio" (>0.5), was independently associated with NSVT (OR=3.73).
- High PVC burden (OR=1.09) and PVC triplets (OR=18.19) were also independently associated with NSVT.
Conclusions:
- Patients with a high PVC burden, PVC triplets, and a premature beat ratio >0.5 have a higher likelihood of NSVT.
- These electrocardiographic markers may aid in identifying patients at increased risk for NSVT.
- Findings suggest potential benefit from more intensive follow-up for patients exhibiting these PVC characteristics.
Keywords:
Cardiac arrhythmiaEctopic beatsNonsustained ventricular tachycardiaPremature ventricular contractionsVentricular arrhythmiasMore Related Videos
09:36Dual-Dye Optical Mapping of Hearts from RyR2R2474S Knock-In Mice of Catecholaminergic Polymorphic Ventricular Tachycardia
Published on: December 22, 2023
1.1K
18:11A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
Published on: December 28, 2012
24.2K
Related Concept Videos
01:29Dysrhythmias III: Characteristics of Dysrhythmias
3
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...
3
01:28Dysrhythmias II: Classification of Tachyarrhythmias
3
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...
3
01:28Disturbances in Heart Rhythm
913
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...
Arrhythmias are categorized by their speed, rhythm, and origin. A slow...
913
01:18Dysrhythmias IV: Characteristics of Bradyarrhythmias
3
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...
3
01:30Pulse rhythm
769
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
769
01:28Mechanism of Cardiac Arrhythmias
894
Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
894