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Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

785
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...
785
Disturbances in Heart Rhythm01:28

Disturbances in Heart Rhythm

936
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...
936
Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

911
Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
911
Assessment of apical radial pulse01:25

Assessment of apical radial pulse

740
Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
740

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Related Experiment Video

Updated: Jun 24, 2025

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
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Observational study protocol for an arrhythmia notification feature.

Sanchit Kumar1, Jason Weinstein1, Hannah Camille Melchinger1

  • 1Clinical and Translational Research Accelerator, Department of Medicine, Yale School of Medicine, New Haven, Connecticut, USA.

BMJ Open
|June 3, 2024
PubMed
Summary
This summary is machine-generated.

This study evaluates the WHOOP strap

Keywords:
CARDIOLOGYCardiac EpidemiologyPacing & electrophysiology

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Area of Science:

  • Cardiology
  • Digital Health
  • Wearable Technology

Background:

  • Screening for atrial fibrillation (AF) in the general population is crucial for early risk identification and treatment.
  • Wearable devices offer potential for arrhythmia screening, but require rigorous validation for safety and accuracy.

Purpose of the Study:

  • To assess the accuracy of the WHOOP strap's Arrhythmia Notification Feature (WARN) algorithm in detecting AF.
  • To compare the WARN algorithm's performance against the electrocardiography (ECG) gold standard in an enriched cohort.

Main Methods:

  • A 2:1 ratio of participants with diagnosed AF to healthy controls will be enrolled.
  • Participants will wear a WHOOP strap and a BioTel ePatch (ECG) for 7 days.
  • Primary outcomes include participant-level sensitivity and specificity of the WARN algorithm compared to ECG.

Main Results:

  • Participant-level sensitivity and specificity of the WARN algorithm will be analyzed against the ECG gold standard.
  • Epoch-level analyses will also be conducted.
  • Performance will be compared across relevant participant subgroups.

Conclusions:

  • The study aims to provide crucial data on the efficacy of wearable technology for AF detection.
  • Findings will inform the potential widespread implementation of the WARP algorithm in consumer wearables.
  • Results will be disseminated through conferences and peer-reviewed publications.