Prevalence and Most Commonly Encountered QRS Fragmentation Morphology and Early Repolarization ST-Segment Changes During the Height of the COVID-19 Pandemic: A Single-Center Experience

In our single-institution study, ECGs obtained during the peak of the COVID-19 pandemic showed a prevalence of 39% for fQRS and 4.6% for ER. While the prevalence of ER was comparable to that observed in the general population, newly identified fQRS was observed at a substantially higher frequency than has been reported in healthy adult populations.

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Publication Details

Journal
Cureus
Published
2026-01-21
DOI
https://doi.org/10.7759/cureus.101990
Primary Topic
Cardiac electrophysiology and arrhythmias
Type
article
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article

Prevalence and Most Commonly Encountered QRS Fragmentation Morphology and Early Repolarization ST-Segment Changes During the Height of the COVID-19 Pandemic: A Single-Center Experience

Robert Spraggins, Munes Albadaineh, Andrew J Fancher, Angel Lopez Candales et al.
Cureus
Cardiac electrophysiology and arrhythmias
article

Prevalence and Most Commonly Encountered QRS Fragmentation Morphology and Early Repolarization ST-Segment Changes During the Height of the COVID-19 Pandemic: A Single-Center Experience

Robert Spraggins, Munes Albadaineh, Andrew J Fancher, Angel Lopez Candales, Khalid Sawalha
article en

Abstract

In our single-institution study, ECGs obtained during the peak of the COVID-19 pandemic showed a prevalence of 39% for fQRS and 4.6% for ER. While the prevalence of ER was comparable to that observed in the general population, newly identified fQRS was observed at a substantially higher frequency than has been reported in healthy adult populations.

CureusVol. 18(1)
University of Puerto Rico System (PR), Wichita State University (US), Wichita Clinic (US), University of Missouri–Kansas City (US), University of Arkansas for Medical Sciences (US)
Good health and well-being
Openalex Percentile: Top 84%
Cardiac electrophysiology and arrhythmias
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Prevalence and Most Commonly Encountered QRS Fragmentation Morphology and Early Repolarization ST-Segment Changes During the Height of the COVID-19 Pandemic: A Single-Center Experience — Robert Spraggins, Munes Albadaineh, et al. · Cureus (2026) | TGRS Research Map | TGRS