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Related Concept Videos

Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

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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...
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Electrocardiogram01:29

Electrocardiogram

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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...
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Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

200
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...
200
Instrumentation Amplifier01:25

Instrumentation Amplifier

843
An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
843
Pulse rhythm01:30

Pulse rhythm

1.1K
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...
1.1K
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

8.8K
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....
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Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
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Electrocardiographic interference: know your patient well.

Arjun K Mahendran1, Philip M Chang1, Dipankar Gupta1

  • 1Congenital Heart Center, Department of Pediatrics, University of Florida, Gainesville, FL, USA.

Cardiology in the Young
|February 5, 2021
PubMed
Summary
This summary is machine-generated.

Gastric pacemakers in children can create unusual electrocardiographic (ECG) artefacts. Recognizing these non-cardiac signals is crucial for accurate ECG interpretation in pediatric patients.

Keywords:
ECGartefactgastric stimulator

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Area of Science:

  • Pediatric cardiology
  • Medical device technology
  • Electrocardiography

Background:

  • Gastric pacemakers are increasingly used in pediatric patients for conditions like gastroparesis.
  • Electrocardiograms (ECGs) are vital for assessing cardiac function in children.
  • Extracardiac devices can potentially interfere with ECG readings.

Purpose of the Study:

  • To report two cases of pediatric patients with gastric pacemakers exhibiting distinct ECG artefacts.
  • To highlight the importance of identifying extracardiac artefacts in ECG interpretation.

Main Methods:

  • Case report analysis of two pediatric patients.
  • Review of electrocardiographic recordings.
  • Clinical correlation of device function and ECG findings.

Main Results:

  • Two pediatric cases demonstrated unique electrocardiographic artefacts attributed to gastric pacemaker devices.
  • The artefacts were morphologically distinct and not indicative of underlying cardiac pathology.

Conclusions:

  • Gastric pacemakers can induce specific electrocardiographic artefacts in pediatric patients.
  • Awareness and recognition of these extracardiac artefacts are essential for accurate ECG interpretation and avoiding misdiagnosis.