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

Electrocardiogram01:29

Electrocardiogram

An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin to...
Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage. When...

You might also read

Related Articles

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

Sort by
Same author

Oral Semaglutide and Cardiovascular Outcomes in High-Risk Type 2 Diabetes.

The New England journal of medicine·2025
Same author

Effects of oral semaglutide on cardiovascular outcomes in individuals with type 2 diabetes and established atherosclerotic cardiovascular disease and/or chronic kidney disease: Design and baseline characteristics of SOUL, a randomized trial.

Diabetes, obesity & metabolism·2023
Same author

Effects of Semaglutide on Stroke Subtypes in Type 2 Diabetes: Post Hoc Analysis of the Randomized SUSTAIN 6 and PIONEER 6.

Stroke·2022
Same author

Cardiovascular efficacy of liraglutide and semaglutide in individuals with diabetes and peripheral artery disease.

Diabetes, obesity & metabolism·2022
Same author

Applying REWIND cardiovascular disease criteria to SUSTAIN 6 and PIONEER 6: An exploratory analysis of cardiovascular outcomes with semaglutide.

Diabetes, obesity & metabolism·2021
Same author

Impact of microvascular disease on cardiovascular outcomes in type 2 diabetes: Results from the LEADER and SUSTAIN 6 clinical trials.

Diabetes, obesity & metabolism·2020
Same journal

Translation of the Breathing Vigilance Questionnaire for respiratory diseases.

Danish medical journal·2026
Same journal

Consensus on key concepts in audiometry.

Danish medical journal·2026
Same journal

Translation and validation of the Lee Chronic Graft-versus-Host Disease Symptom Scale in Denmark.

Danish medical journal·2026
Same journal

Variation in microbiological test requisitions among general practices in the North Denmark Region.

Danish medical journal·2026
Same journal

Diagnostic accuracy of common infectious disease discharge diagnoses from emergency department.

Danish medical journal·2026
Same journal

Minimally invasive ventral mesh rectopexy.

Danish medical journal·2026
See all related articles

Related Experiment Video

Updated: May 24, 2026

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

The ECG as decision support in STEMI.

Maria Sejersten Ripa1

  • 1Department of Cardiology, The Heart Center, Rigshospitalet, Copenhagen, Denmark. msejersten@webspeed.dk

Danish Medical Journal
|March 3, 2012
PubMed
Summary
This summary is machine-generated.

The electrocardiogram (ECG) optimizes treatment for ST-segment elevation myocardial infarction (STEMI) by improving prehospital diagnosis, guiding reperfusion therapy decisions, and aiding post-treatment risk stratification. This enhances patient care from symptom onset through recovery.

More Related Videos

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
10:17

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
05:03

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function

Published on: December 11, 2019

Related Experiment Videos

Last Updated: May 24, 2026

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
10:17

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
05:03

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function

Published on: December 11, 2019

Area of Science:

  • Cardiology
  • Medical Technology
  • Emergency Medicine

Background:

  • The electrocardiogram (ECG) is crucial for managing acute coronary syndromes (ACS).
  • Optimizing ECG interpretation and application in ST-segment elevation myocardial infarction (STEMI) is vital for effective treatment strategies.
  • Prehospital ECG use presents challenges in electrode placement and diagnostic accuracy.

Purpose of the Study:

  • To optimize decision support using ECG for STEMI treatment strategies.
  • To evaluate alternative ECG lead systems for prehospital use.
  • To assess paramedic diagnostic capabilities and the impact of ECG transmission to cardiologists.
  • To determine ECG's role in guiding reperfusion therapy and post-treatment management.

Main Methods:

  • Investigated an alternative, simplified ECG lead system for prehospital settings.
  • Assessed paramedic STEMI diagnosis accuracy with and without confounding factors.
  • Evaluated the impact of transmitting prehospital ECGs to cardiologists on treatment times.
  • Analyzed ECG markers for predicting reperfusion therapy benefit and prognosis.
  • Studied ST-segment resolution post-reperfusion for risk stratification.

Main Results:

  • An alternative lead system showed promise but had diagnostic limitations.
  • Paramedic STEMI diagnosis accuracy decreased with confounding ECG factors; prehospital ECG transmission to cardiologists reduced time to primary percutaneous coronary intervention (pPCI) by over an hour.
  • Initial ECGs can identify patients who will benefit most from reperfusion therapy, regardless of symptom duration, and predict mortality risk.
  • Bivalirudin showed potential as an antithrombotic alternative to heparin.
  • ST-segment resolution is key for risk stratification after fibrinolysis, not pPCI, with complete resolution after fibrinolysis linked to higher reinfarction risk.

Conclusions:

  • The ECG is indispensable for decision support throughout STEMI management, from initial diagnosis to post-reperfusion care.
  • Improvements in prehospital ECG acquisition, interpretation, and transmission significantly enhance STEMI patient triage and treatment.
  • ECG analysis provides critical prognostic information, guiding optimal reperfusion strategies and subsequent management decisions.