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Related Concept Videos

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...
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Holter Monitor: 24-Hour Monitoring01:23

Holter Monitor: 24-Hour Monitoring

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Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
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Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

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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...
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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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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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Related Experiment Video

Updated: Nov 19, 2025

An Isolated Working Heart System for Large Animal Models
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External Cardiac Loop Recorders: Functionalities, Diagnostic Efficacy, Challenges and Opportunities.

Rama Reddy Rajanna, Natarajan Sriraam, V S Prakash

    IEEE Reviews in Biomedical Engineering
    |January 29, 2021
    PubMed
    Summary
    This summary is machine-generated.

    Long-term ambulatory ECG monitoring devices effectively diagnose infrequent arrhythmias causing syncope and palpitations. Event loop recorders improve diagnosis and management of atrial fibrillation (AF) and other cardiac conditions.

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    Area of Science:

    • Cardiology
    • Biomedical Engineering

    Background:

    • Cardiovascular diseases (CVDs) caused 17.9 million global deaths in 2016, with 85% from myocardial infarction and stroke.
    • Atrial fibrillation (AF) is a primary suspected cause of stroke and transient ischemic attacks.
    • Traditional 24-48 hour Holter monitoring is often ineffective for diagnosing infrequent arrhythmic episodes causing syncope and palpitations.

    Purpose of the Study:

    • To review state-of-the-art ambulatory ECG (AECG) monitoring devices for long-term ECG recording.
    • To evaluate the role of AECG in diagnosing arrhythmias in patients with cardiac syncope and palpitations.
    • To assess the utility of external cardiac recorders (event loop recorders - ELRs) in diagnosing and managing AF.

    Main Methods:

    • Critical review of existing AECG monitoring devices, focusing on ELRs.
    • Analysis of ELR utility in capturing symptom-rhythm correlation during infrequent arrhythmic events.
    • Presentation of a case study on clinical data acquisition challenges with ambulatory monitoring devices.

    Main Results:

    • External cardiac recorders (ELRs) are valuable for capturing symptom-rhythm correlation in infrequent arrhythmias.
    • Long-term AECG monitoring aids in understanding arrhythmic causes of syncope and palpitations.
    • Challenges in clinical data acquisition using ambulatory devices were highlighted.

    Conclusions:

    • AECG monitoring, particularly ELRs, is crucial for diagnosing infrequent arrhythmias.
    • Improvements in ELR design and algorithms can enhance diagnostic yield and clinical usability.
    • Effective diagnosis and management of conditions like AF rely on advanced long-term ECG monitoring.