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Dysrhythmias II: Classification of Tachyarrhythmias

Dysrhythmias 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...

Heart Failure I: Introduction

Heart Failure I: Introduction

Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...

Pathophysiology of Heart Failure

Pathophysiology of Heart Failure

Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...

Heart Failure II: Pathophysiology

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...

Dysrhythmias III: Characteristics of Dysrhythmias

Dysrhythmias 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.

Disturbances in Heart Rhythm

Disturbances 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...

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Updated: Jun 3, 2026

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine

Published on: February 17, 2018

Supraventricular tachycardia causing heart failure.

Mahmoud Houmsse¹, Jaret Tyler, Steven Kalbfleisch

¹Department of Cardiovascular Medicine, Section of Electrophysiology, The Ohio State University, Columbus, OH 43235, USA. mahmoud.houmsse@osumc.edu

Current Opinion in Cardiology

|April 5, 2011

Summary

This summary is machine-generated.

Supraventricular tachycardia (SVT) can cause heart failure and cardiomyopathy. Advances in treatment, including medications and ablation, improve outcomes and reverse cardiac dysfunction in patients with SVT-induced heart failure.

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Area of Science:

Cardiology
Electrophysiology
Heart Failure Research

Background:

Supraventricular tachycardia (SVT) is a significant cause of tachycardia-induced cardiomyopathy, leading to heart failure.
Understanding the link between SVT and heart failure is crucial for effective patient management.

Purpose of the Study:

To review the clinical presentation of SVT causing heart failure.
To discuss the pathophysiology, evaluation, and management of SVT-induced heart failure.
To outline the prognosis for patients with SVT causing heart failure.

Main Methods:

Literature review of recent advances in SVT management.
Analysis of therapeutic strategies for rate and rhythm control.
Evaluation of outcomes following ablative therapies and pacemaker implantation.

Main Results:

New anti-arrhythmic drugs enhance rate or rhythm control for SVT.
Curative ablative therapy restores sinus rhythm and improves heart function.
Atrioventricular junction ablation with pacing offers improved rate control and cardiac remodeling reversal.

Conclusions:

Current management strategies for SVT causing heart failure have significantly improved patient outcomes.
Therapeutic interventions can alleviate heart failure symptoms and reverse cardiac dysfunction.
This review provides a comprehensive overview of SVT-induced heart failure for clinical guidance.