Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Dysrhythmias I: Introduction

Dysrhythmias I: Introduction

Dysrhythmias refers to abnormalities in the heart's rhythm. They result from disruptions in the heart's electrical conduction system, which includes the sinoatrial(SA)node, atrioventricular(AV) node, the bundle of His, bundle branches, and Purkinje fibers.Definition and PathophysiologyDysrhythmias result from disorders of impulse formation, impulse conduction, or both. The heart contains specialized cells in the sinoatrial node, atrioventricular node, and the bundle of His and Purkinje fibers...

Dysrhythmias VII: Nursing Management of Dysrhythmias

Dysrhythmias VII: Nursing Management of Dysrhythmias

Nursing management of dysrhythmias involves the following:AssessmentSubjective Assessment:The initial step involves gathering patient-reported symptoms such as dizziness, palpitations, and chest discomfort. It is crucial to collect a detailed history, including previous heart conditions, current medication use, and lifestyle factors like caffeine and alcohol consumption.Objective Assessment:This involves observing clinical signs such as jugular venous distention, cool and pale skin, and...

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias 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...

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...

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...

Dysrhythmias IV: Characteristics of Bradyarrhythmias

Dysrhythmias 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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Sustainable textile wastewater remediation using nano zerovalent aluminum for organic removal and pathogen inactivation.

Scientific reports·2025

Same author

The impact of stay-at-home orders on air-quality and COVID-19 mortality rate in the United States.

Urban climate·2022

Same author

Applying the three R's: Reduce, reuse, and recycle in the chemical industry.

Journal of the Air & Waste Management Association (1995)·2016

Same author

Successful atrioesophageal fistula repair after atrial fibrillation ablation.

Journal of the American College of Cardiology·2013

Same author

Fish oil in primary and secondary cardiovascular prevention.

Ochsner journal·2011

Same author

Is the mechanism of supraventricular tachycardia in pediatrics influenced by age, gender or ethnicity?

Congenital heart disease·2009

Search research articles

Related Experiment Video

Updated: Jun 28, 2026

Multidisciplinary Approach to Obesity Management: A Case Report

Multidisciplinary Approach to Obesity Management: A Case Report

Published on: May 30, 2025

Obesity and dysrhythmias.

Rishi G Anand¹, Robert W Peters, Timothy P Donahue

¹Department of Cardiology, Ochsner Clinic Foundation, New Orleans, LA 70121, USA.

Journal of the Cardiometabolic Syndrome

|November 6, 2008

Summary

Obesity is a growing epidemic, significantly increasing cardiovascular disease risk. This review details how obesity impacts heart structure, function, and electrical activity, leading to conditions like atrial fibrillation and sudden cardiac death.

Area of Science:

Cardiology
Public Health
Physiology

Background:

Obesity in the United States has reached epidemic levels, with 66% of adults classified as overweight or obese based on Body Mass Index (BMI) criteria.
The prevalence of obesity has dramatically increased since the 1970s, rising from 15% to approximately 32% of the adult population by 2003.
Obesity is a significant risk factor for the development and progression of cardiovascular disease.

Purpose of the Study:

To review the histopathophysiologic alterations in cardiac structure and function associated with obesity.
To explore the link between obesity and cardiac arrhythmias, including atrial fibrillation and sudden cardiac death.
To analyze electrocardiographic changes observed in obese individuals.

Main Methods:

More Related Videos

A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats

A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats

Published on: April 28, 2023

Related Experiment Videos

Last Updated: Jun 28, 2026

Multidisciplinary Approach to Obesity Management: A Case Report

Multidisciplinary Approach to Obesity Management: A Case Report

Published on: May 30, 2025

A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats

A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats

Published on: April 28, 2023

Literature review of studies examining obesity and cardiovascular health.

Analysis of epidemiological data on obesity prevalence.

Review of histopathological and physiological changes in the obese heart.

Examination of clinical data on arrhythmias and electrocardiographic findings in obese patients.

Main Results:

Obesity induces significant changes in cardiac structure and function.
A strong association exists between obesity and increased risk of atrial fibrillation and sudden cardiac death.
Specific electrocardiographic patterns are observed in obese individuals, reflecting cardiac remodeling and strain.

Conclusions:

Obesity poses a substantial threat to cardiovascular health, contributing to structural and functional heart disease.
Managing obesity is crucial for preventing obesity-related cardiovascular complications, including arrhythmias.
Further research is needed to fully elucidate the mechanisms linking obesity to cardiac dysfunction and to develop targeted interventions.