Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

473
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...
473
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

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

983
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...
983
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

3.9K
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...
3.9K
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

772
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...
772
Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

2.6K
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.
2.6K
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

1.1K
Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
1.1K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Pharmacologic Treatments With Lifestyle Modifications in Nonpregnant Adults With Overweight or Obesity in Outpatient Settings: A Living Clinical Guideline From the American College of Physicians (April 2026).

Annals of internal medicine·2026
Same author

Accuracy of a Deep Learning Model in Intracardiac Echocardiography.

JACC. Advances·2026
Same author

Prioritized health outcomes for adolescents and young adults with acute lymphoblastic leukemia.

Blood neoplasia·2026
Same author

Offsetting costs of new ablation technologies with increased procedural efficiency and volume.

Heart rhythm·2026
Same author

Screening for Breast Cancer in Asymptomatic, Average-Risk Adult Females: A Guidance Statement From the American College of Physicians (Version 2).

Annals of internal medicine·2026
Same author

Feasibility of Self-Reported Surveillance After Catheter Ablation for Atrial Fibrillation Using A Mobile Application.

JACC. Advances·2026

Video Experimental Relacionado

Updated: Apr 3, 2026

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
08:10

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Published on: July 20, 2022

2.2K

Estratificación del riesgo de eventos arritmicos en pacientes con preexcitación asintomática: una revisión

Sana M Al-Khatib, Aysha Arshad, Ethan M Balk

    Circulation
    |September 25, 2015
    PubMed
    Resumen
    Este resumen es generado por máquina.

    La estratificación del riesgo mediante estudios electrofisiológicos para la preexcitación asintomática puede reducir los eventos arritmicos. Se recomienda la ablación para pacientes de alto riesgo, pero se necesitan más investigaciones para confirmar los beneficios.

    Palabras clave:
    Declaraciones científicas de la AHASíndrome de Wolff y Parkinson-WhiteAccesorio para el haz atrioventricularSin síntomasarritmias cardíacasSíndromes de preexcitaciónevaluación de riesgosmuerte súbita por ataque cardíaco

    Más Videos Relacionados

    Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding
    10:39

    Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding

    Published on: August 30, 2024

    1.5K
    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

    18.3K

    Videos de Experimentos Relacionados

    Last Updated: Apr 3, 2026

    Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
    08:10

    Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

    Published on: July 20, 2022

    2.2K
    Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding
    10:39

    Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding

    Published on: August 30, 2024

    1.5K
    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

    18.3K

    Área de la Ciencia:

    • Cardiología
    • Electrofisiología
    • Estratificación del riesgo clínico

    Sus antecedentes:

    • La preexcitación asintomática plantea un riesgo de eventos cardíacos repentinos.
    • Se debaten los métodos actuales de estratificación del riesgo para estos pacientes.
    • La identificación de las personas de alto riesgo es crucial para una intervención oportuna.

    Objetivo del estudio:

    • Revisar sistemáticamente la literatura sobre la estratificación del riesgo en la preexcitación asintomática.
    • Para determinar si los métodos no invasivos o invasivos reducen los eventos arritmicos.
    • Evaluar si la estratificación del riesgo mejora los resultados de los pacientes.

    Principales métodos:

    • Búsqueda sistemática de la literatura de PubMed, EMBASE y el Registro Central de Cochrane (1970-2014).
    • Incluir ensayos controlados aleatorios y estudios de cohorte.
    • Se excluyen los estudios de baja calidad y los artículos no escritos en inglés.

    Principales resultados:

    • Se analizaron nueve estudios (incluyendo un ECA y ocho estudios de cohorte).
    • En el ECA, la ablación redujo el riesgo de eventos arritmicos a 5 años del 77% al 7%.
    • Las cohortes de observación mostraron bajas tasas de taquicardia supraventricular, fibrilación auricular y fibrilación ventricular en pacientes no tratados.

    Conclusiones:

    • La estratificación del riesgo basada en estudios electrofisiológicos puede beneficiar a los pacientes asintomáticos preexcitados.
    • Se debe considerar la ablación de vías accesorias para las personas de alto riesgo.
    • Debido a las limitaciones de datos, son necesarios estudios adicionales de alta calidad.