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Related Concept Videos

Electrocardiogram01:29

Electrocardiogram

4.6K
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...
4.6K
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

8.6K
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....
8.6K
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

1.1K
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...
1.1K
Cardiac Action Potential01:30

Cardiac Action Potential

4.4K
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
4.4K
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

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

256
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...
256
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

551
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,...
551

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In Vivo Surface Electrocardiography for Adult Zebrafish
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Basic surface electrocardiogram interpretation for the pharmacist.

Philip Mar1, Joseph S Van Tuyl2, Michael J Lim3

  • 1Division of Cardiology, Department of Medicine, Saint Louis University School of Medicine, Saint Louis, MO, USA.

American Journal of Health-System Pharmacy : AJHP : Official Journal of the American Society of Health-System Pharmacists
|February 21, 2021
PubMed
Summary
This summary is machine-generated.

The electrocardiogram (ECG) provides crucial electrical and biomechanical insights into heart function. Familiarity with ECG interpretation is essential for clinicians, including pharmacists, in cardiovascular care.

Keywords:
arrhythmiacardiologyelectrocardiogram

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Area of Science:

  • Cardiology
  • Clinical Pharmacy
  • Diagnostic Tools

Background:

  • The electrocardiogram (ECG) is a vital diagnostic tool in clinical practice.
  • Clinical pharmacists are increasingly involved in cardiovascular patient care.
  • ECG interpretation is a key skill for healthcare professionals in this field.

Purpose of the Study:

  • To highlight the importance of the electrocardiogram (ECG) for clinicians.
  • To emphasize the growing need for ECG interpretation skills among clinical pharmacists.
  • To underscore the value of ECGs in understanding cardiac electrical and biomechanical activity.

Main Methods:

  • This study focuses on the interpretive value of the ECG.
  • Information is derived from established clinical knowledge and applications of ECGs.
  • No new experimental methods were employed; it is a review of existing knowledge.

Main Results:

  • ECGs offer comprehensive data on heart's electrical activity, including rhythm, rate, and axis.
  • ECGs reveal biomechanical aspects such as ventricular hypertrophy and repolarization abnormalities.
  • The ECG is instrumental in diagnosing and managing conditions like atrial fibrillation, ischemic heart disease, and QT prolongation.

Conclusions:

  • The electrocardiogram (ECG) is a fundamental diagnostic test in medicine.
  • Clinicians should possess basic proficiency in ECG interpretation.
  • Understanding ECGs enhances the ability to assess and manage cardiac conditions effectively.