Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

753
Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
753
Cardiopulmonary Resuscitation IV: Pharmacological Management01:25

Cardiopulmonary Resuscitation IV: Pharmacological Management

1.1K
Pharmacologic intervention is crucial in treating cardiac arrest patients during ACLS or Advanced Cardiovascular Life Support. The ACLS algorithms guide the administration of specific drugs based on the patient's cardiac arrest rhythm, which includes pulseless ventricular tachycardia (VT), ventricular fibrillation (VF), asystole, and pulseless electrical activity (PEA).EpinephrineIndication: Epinephrine is the first-line drug for all cardiac arrest rhythms.Mechanism of Action: Epinephrine...
1.1K
Seizures: Classification01:13

Seizures: Classification

1.9K
Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
1.9K
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

710
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...
710
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

714
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...
714
Dysrhythmias I: Introduction01:15

Dysrhythmias I: Introduction

719
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...
719

You might also read

Related Articles

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

Sort by
Same author

[The Hungarian short version and psychometric properties of the Activities-specific Balance Confidence Scale for assessing fall risk].

Orvosi hetilap·2026
Same author

Fenfluramine for seizures in Dravet syndrome and Lennox-Gastaut syndrome: Mechanisms, clinical evidence, safety, and practical integration.

Epilepsy & behavior reports·2026
Same author

Timing, Composition, and Clinical Correlates of Immunotherapy Response in GAD65 Antibody-Associated Epilepsy: A Literature-Derived Patient-Level Analysis of 375 Published Cases.

Neurology international·2026
Same author

Semiological features of epilepsy seizures and paroxysmal non-epileptic events in children: A systematic review and meta-analysis.

Developmental medicine and child neurology·2026
Same author

MRI Diffusion Tensor Image Analysis Along the Perivascular Space: Effects of Mean Tract Orientation Divergence.

Journal of magnetic resonance imaging : JMRI·2026
Same author

Reply to: "Alcohol Intake and Parkinson's Symptoms Following Diagnosis".

Movement disorders : official journal of the Movement Disorder Society·2026

Related Experiment Video

Updated: Mar 10, 2026

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
08:28

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus

Published on: April 5, 2011

18.2K

Ictal asystole: A systematic review.

Dalma Tényi1, Csilla Gyimesi1, Péter Kupó2

  • 1Department of Neurology, University of Pécs, Pécs, Hungary.

Epilepsia
|December 19, 2016
PubMed
Summary

Ictal asystole (IA) is linked to focal epilepsy, often left-sided and temporal. New-onset IA is associated with female gender and heart conditions, while late-onset IA may involve chronic epilepsy and autonomic dysregulation.

Keywords:
Arrhythmogenic seizuresAutonomic nervous systemCardiac arrestFocal epilepsy

More Related Videos

Concurrent Electroencephalography Recording During Transcranial Alternating Current Stimulation tACS
06:51

Concurrent Electroencephalography Recording During Transcranial Alternating Current Stimulation tACS

Published on: January 22, 2016

15.3K
Long-term Continuous EEG Monitoring in Small Rodent Models of Human Disease Using the Epoch Wireless Transmitter System
08:43

Long-term Continuous EEG Monitoring in Small Rodent Models of Human Disease Using the Epoch Wireless Transmitter System

Published on: July 21, 2015

26.4K

Related Experiment Videos

Last Updated: Mar 10, 2026

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
08:28

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus

Published on: April 5, 2011

18.2K
Concurrent Electroencephalography Recording During Transcranial Alternating Current Stimulation tACS
06:51

Concurrent Electroencephalography Recording During Transcranial Alternating Current Stimulation tACS

Published on: January 22, 2016

15.3K
Long-term Continuous EEG Monitoring in Small Rodent Models of Human Disease Using the Epoch Wireless Transmitter System
08:43

Long-term Continuous EEG Monitoring in Small Rodent Models of Human Disease Using the Epoch Wireless Transmitter System

Published on: July 21, 2015

26.4K

Area of Science:

  • Neurology
  • Cardiology
  • Epileptology

Background:

  • Ictal asystole (IA) is a rare but serious event during epileptic seizures.
  • Understanding the characteristics and predictors of IA is crucial for patient management.

Purpose of the Study:

  • To conduct a comprehensive analysis of ictal asystole (IA) in a large cohort.
  • To identify factors associated with new-onset versus late-onset IA and prolonged asystole.

Main Methods:

  • Systematic review of case reports of IA from 1983-2016.
  • Characterization of 157 IA cases, including patient history, seizure details, and diagnostic workup.
  • Comparative analyses based on epilepsy onset delay and asystole duration.

Main Results:

  • All 157 patients had focal epilepsy, predominantly left temporal.
  • New-onset IA (<1 year epilepsy) was linked to female gender, heart conditions, and normal EEG/imaging.
  • Late-onset IA (≥1 year epilepsy) was more common and associated with intractable epilepsy.
  • Very prolonged asystole (>30s) occurred in 73% of cases, often with generalized seizures.

Conclusions:

  • Typical IA characteristics (focal, left temporal seizures in intractable epilepsy) are not universally applicable.
  • Female gender and pre-existing heart conditions may predispose to new-onset IA.
  • Neuronal network changes and autonomic dysregulation may facilitate late-onset IA.