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Related Concept Videos

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

773
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,...
773
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

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

483
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...
483
Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

1.7K
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.
1.7K
Stimulation of the Intracardiac Nervous System to Assess Susceptibility to Arrhythmia03:18

Stimulation of the Intracardiac Nervous System to Assess Susceptibility to Arrhythmia

519
Source: Jungen, C., et al. Impact of Intracardiac Neurons on Cardiac Electrophysiology and Arrhythmogenesis in an Ex Vivo Langendorff System. J. Vis. Exp. (2018).The video demonstrates an ex vivo technique for stimulating the intracardiac nervous system to assess the heart’s susceptibility to arrhythmia. Using a perfusion apparatus, an isolated mouse heart is perfused with an oxygenated buffer. The intracardiac nervous system is then stimulated at a high frequency to induce...
519
Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice06:07

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice

4.3K
Here we present a step-by-step protocol for a semiautomated approach to analyze murine long-term electrocardiography (ECG) data for basic ECG parameters and common arrhythmias. Data are obtained by implantable telemetry transmitters in living and awake mice and analyzed using Ponemah and its analysis...
4.3K
Viral Transgene Expression in Rodent Hearts and the Assessment of Cardiac Arrhythmia Risk05:15

Viral Transgene Expression in Rodent Hearts and the Assessment of Cardiac Arrhythmia Risk

2.1K
The present protocol describes methods for transgene expression in rat and mouse hearts by direct intramyocardial injection of the virus under echocardiography guidance. Methods for the assessment of the susceptibility of hearts to ventricular arrhythmias by the programmed electrical stimulation of isolated, Langendorff-perfused hearts are also explained...
2.1K

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Related Experiment Video

Updated: Jan 20, 2026

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

773

Hypertension and Arrhythmias.

Muhammad R Afzal1, Salvatore Savona1, Omar Mohamed1

  • 1Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, 473 West 12th Avenue, Suite 200, Columbus, OH 43210, USA.

Heart Failure Clinics
|September 2, 2019
PubMed
Summary
This summary is machine-generated.

Hypertension is a major cardiovascular risk factor linked to heart failure and stroke. Managing blood pressure through lifestyle changes and medication can prevent or delay these conditions and cardiac arrhythmias.

Keywords:
Atrial fibrillationHypertensionSudden cardiac deathVentricular tachycardia

More Related Videos

Stimulation of the Intracardiac Nervous System to Assess Susceptibility to Arrhythmia
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Stimulation of the Intracardiac Nervous System to Assess Susceptibility to Arrhythmia

Published on: April 28, 2025

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Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
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Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice

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Related Experiment Videos

Last Updated: Jan 20, 2026

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

773
Stimulation of the Intracardiac Nervous System to Assess Susceptibility to Arrhythmia
03:18

Stimulation of the Intracardiac Nervous System to Assess Susceptibility to Arrhythmia

Published on: April 28, 2025

519
Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
06:07

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice

Published on: May 23, 2021

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Area of Science:

  • Cardiology
  • Nephrology
  • Pharmacology

Background:

  • Hypertension is the leading cardiovascular risk factor, contributing to heart failure, coronary artery disease, stroke, and chronic kidney disease.
  • Hypertensive heart disease frequently manifests as cardiac arrhythmias, including supraventricular and ventricular arrhythmias.
  • Atrial fibrillation, often associated with hypertension, significantly increases stroke risk.

Purpose of the Study:

  • To review the relationship between hypertension and cardiovascular complications, particularly cardiac arrhythmias.
  • To highlight the role of antihypertensive medications in electrolyte imbalances and subsequent arrhythmias.
  • To emphasize a comprehensive strategy for managing hypertension and its sequelae.

Main Methods:

  • Literature review of studies on hypertension, cardiovascular disease, and arrhythmias.
  • Analysis of the impact of antihypertensive pharmacotherapy on electrolyte balance.
  • Synthesis of current evidence on management strategies for hypertensive heart disease.

Main Results:

  • Hypertension is a primary driver of heart failure, coronary artery disease, stroke, and chronic kidney disease.
  • Cardiac arrhythmias, such as atrial fibrillation, supraventricular, and ventricular arrhythmias, are common in hypertensive patients.
  • Certain antihypertensive drugs can cause electrolyte disturbances, increasing arrhythmia risk.

Conclusions:

  • Effective blood pressure control is crucial for preventing cardiovascular complications.
  • A multifaceted approach including screening, lifestyle modification, and pharmacotherapy is essential.
  • Optimal management can delay the progression of heart failure, coronary artery disease, and cardiac arrhythmias.