AI Article Synopsis
Article Abstract
Background: Atrial arrhythmia (AA) discrimination remains a technological challenge for implanted cardiac devices. We examined the feasibility of R-wave detection by a subcutaneous far field ECG (SFFECG) and analysis of these signals for R to R variability as an indicator of atrial arrhythmia (AA).
Methods: Surface ECG and SFFECG (from the pacemaker pocket) were recorded in sixteen patients (61.5 +/- 11.4 years) with AA. The SFFECG was recorded with a pacemaker sized four electrode array acutely placed in the pacemaker pocket during implantation. The signals were analyzed to obtain peak-to-peak R wave amplitude and R to R interval variability (indicative of AAs).
Results: In sixteen patients R waves were visually discernible in all recordings. The percentage over and under detection for automatic R wave recognition SFFECG was 3 and 9%, respectively. R to R variability analysis using the SFFECG produced results concordant to those using the surface ECG.
Conclusion: SFFECG might be a helpful adjunct in implantable device systems for detection of R waves and may be used for measurement of R to R variability.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7027661 | PMC |
| http://dx.doi.org/10.1111/j.1542-474x.2001.tb00081.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Utility of using far-field R-wave signals in the detection of fatal ventricular arrhythmia.
J Arrhythm
February 2025
Current guidelines recommend cardioverter-defibrillator (ICD) programming, including faster detection rates, longer detection durations, and strict discrimination for supraventricular tachycardia (SVT) to prevent unnecessary ICD treatment. This delayed-style ICD programming could lead to a rise in the possibility of VF undersensing. To avoid this risk, an innovative algorithm known as VF Therapy Assurance (VFTA; Abbott, Sylmar, CA) has been developed.
View Article and Find Full Text PDFIntraoperative ST Segment Depression During General Anesthesia in a Child: Early Detection of Hypertrophic Cardiomyopathy.
Cardiol Res
December 2024
Department of Anesthesiology & Pain Medicine, Nationwide Children's Hospital, Columbus, OH, USA.
Article Synopsis
- Continuous electrocardiographic (ECG) monitoring during surgery in infants and children is essential to detect potential myocardial pathologies, despite the rarity of these issues in pediatric patients.
- A case is presented involving a 2-year-old child who showed ST segment depression and increased R wave amplitude during surgery, which led to the discovery of undiagnosed hypertrophic cardiomyopathy postoperatively.
- The findings emphasize the importance of recognizing ECG changes and the need for thorough evaluation to prevent complications during and after surgery, even when patients appear asymptomatic.
Photoplethysmography as a noninvasive surrogate for microneurography in measuring stress-induced sympathetic nervous activation - A machine learning approach.
Comput Biol Med
December 2024
School of Information Technology, Deakin University, Melbourne, Victoria, Australia. Electronic address:
The sympathetic nervous system (SNS) is essential for the body's immediate response to stress, initiating physiological changes that can be measured through sympathetic nerve activity (SNA). While microneurography (MNG) is the gold standard for direct SNA measurement, its invasive nature limits its practical use in clinical settings. This study investigates the use of multi-wavelength photoplethysmography (PPG) as a non-invasive alternative for SNA measurement.
View Article and Find Full Text PDFTypical Atrioventricular Nodal Re-Entry Tachycardia Masquerading as Atrial Fibrillation.
JACC Case Rep
October 2024
Department of Cardiovascular Diseases, Mayo Clinic Health System, Eau Claire, Wisconsin, USA.
We report 3 cases of irregular, narrow complex tachycardia misdiagnosed and treated for atrial fibrillation. The adenosine response, detection of recurring triple cycle length variation patterns, and pseudo-R-wave in lead V during tachycardia made us suspect typical atrioventricular nodal re-entrant tachycardia. The electrophysiology study confirmed atrioventricular nodal re-entrant tachycardia, and symptoms were resolved by slow pathway modification.
View Article and Find Full Text PDFIntroduction: The novel Confirm Rx™ implantable cardiac monitor (ICM) with SharpSense™ technology incorporates a new P-wave discriminator designed to improve AF detection. This study aimed to evaluate the diagnostic performance of the Confirm Rx™ ICM in detecting AF episodes of varying durations.
Methods: We conducted a multicenter retrospective analysis of consecutive patients implanted with a Confirm Rx™ ICM (v1.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!