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

Dysrhythmias III: Characteristics of Dysrhythmias01:29

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.
Increased pulse rate01:17

Increased pulse rate

Tachycardia is a condition marked by an abnormally fast or irregular heart rate, surpassing the typical resting rate. In adults, tachycardia is characterized by a pulse rate ranging from 100 to 180 beats per minute. The increased heart rate can result in inadequate blood flow to various body parts, ultimately diminishing the oxygen supply to organs and tissues.
Many factors can elevate the risk of developing tachycardia. These include advanced age, a family history of arrhythmias, and an...
Dysrhythmias II: Classification of Tachyarrhythmias01:28

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...
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

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...
Disturbances in Heart Rhythm01:29

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...
Decreased pulse rate01:14

Decreased pulse rate

Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with bradycardia...

You might also read

Related Articles

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

Sort by
Same author

Tropical calcific pancreatitis.

The Ceylon medical journal·2008
Same author

Sudden decrease in bispectral index value during emergence from general anaesthesia.

Anaesthesia and intensive care·2008
Same author

Bilateral vocal cord palsy due to brain-stem cavernoma--a diagnostic dilemma!

Acta neurochirurgica·2008
Same author

Patient expectations for hallux valgus surgery.

Journal of orthopaedic surgery (Hong Kong)·2008
Same author

Dual elicitation for improved production of withaferin A by cell suspension cultures of Withania somnifera.

Applied biochemistry and biotechnology·2008
Same author

Visceral leishmaniasis in pregnancy - the role of amphotericin B.

Annals of tropical medicine and parasitology·2008
Same journal

Response to comments on: Diagnostic classification of dermatomyositis with and without electrodiagnostic study: real-world clinical practice.

Singapore medical journal·2026
Same journal

Comments on: Diagnostic classification of dermatomyositis with and without electrodiagnostic study: real-world clinical practice.

Singapore medical journal·2026
Same journal

Computed tomographic evaluation of bronchiolitis: unravelling the multifaceted spectrum of airways and pulmonary abnormalities.

Singapore medical journal·2026
Same journal

Approach to facial pain.

Singapore medical journal·2026
Same journal

Glioblastoma: current challenges and future horizons.

Singapore medical journal·2026
Same journal

The role of public health specialists in tertiary hospitals in Singapore.

Singapore medical journal·2026
See all related articles

Related Experiment Video

Updated: Jun 3, 2026

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

Regular narrow complex tachycardia.

D Singh1, S G Teo, K K Poh

  • 1Cardiac Department, National University Heart Centre, 1E Kent Ridge Road, NUHS Tower Block, Level 9, Singapore 119228.

Singapore Medical Journal
|April 1, 2011
PubMed
Summary
This summary is machine-generated.

Understanding paroxysmal supraventricular tachycardia (PSVT) requires careful electrocardiogram (ECG) analysis. Accurate ECG interpretation is key for effective patient management and treatment strategies.

More Related Videos

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
10:08

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

Published on: February 17, 2018

Related Experiment Videos

Last Updated: Jun 3, 2026

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

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
10:08

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

Published on: February 17, 2018

Area of Science:

  • Cardiology
  • Electrophysiology

Background:

  • Paroxysmal supraventricular tachycardia (PSVT) is a common cardiac arrhythmia.
  • Effective management relies on accurate diagnosis and understanding of different PSVT subtypes.

Purpose of the Study:

  • To review patient cases of PSVT.
  • To emphasize the importance of ECG interpretation in PSVT diagnosis and management.

Main Methods:

  • Case study review.
  • Electrocardiogram (ECG) analysis.
  • Clinical course evaluation.

Main Results:

  • Detailed ECG analysis is crucial for differentiating PSVT types.
  • Accurate differentiation impacts patient outcomes.

Conclusions:

  • Correct ECG interpretation is vital for diagnosing and managing PSVT.
  • Understanding PSVT subtypes guides immediate and long-term patient care.