Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Atrial fibrillation and heart rate at long-term electrocardiograms

Persson, Anders P LU orcid (2025) In Lund University, Faculty of Medicine Doctoral Dissertation Series
Abstract
Atrial fibrillation (AF) is common condition among the elderly, and leads to
increased risks of stroke, heart failure, dementia, and death. Diagnosing AF requires electrocardiograms (ECGs), and long recordings may be necessary since AF often occurs intermittently in its early stages.
During AF, the heart rate is irregular, and sometimes inappropriately fast. This thesis includes four papers that study long-term ECGs for AF prediction and management.

In Paper I we used the population-based Swedish CArdioPulmonary bioImage
Study to establish normal ranges for ambulatory heart rate during sinus rhythm. The normal range was wide, and largely independent of clinical correlates.

In Paper II and III we used the... (More)
Atrial fibrillation (AF) is common condition among the elderly, and leads to
increased risks of stroke, heart failure, dementia, and death. Diagnosing AF requires electrocardiograms (ECGs), and long recordings may be necessary since AF often occurs intermittently in its early stages.
During AF, the heart rate is irregular, and sometimes inappropriately fast. This thesis includes four papers that study long-term ECGs for AF prediction and management.

In Paper I we used the population-based Swedish CArdioPulmonary bioImage
Study to establish normal ranges for ambulatory heart rate during sinus rhythm. The normal range was wide, and largely independent of clinical correlates.

In Paper II and III we used the population-based Malmö Diet and Cancer Study to show that low heart rates at 24hECGs are associated with increased incidence of AF and that patients with short, irregular supraventricular tachycardias (SVTs) without discernible P-waves had substantially increased risk of AF (adjusted hazard ratio 4.95, 95% confidence interval (CI) 2.06-11.9).

Electrocardiograms are also used to measure resting heart rates during AF, to dose rate controlling drugs. In Paper IV we repeatedly sampled resting heart rate
measurements in patients with at least 2 days of ambulatory ECGs with AF (n=832). A single measurement differed on average by 10% compared to the average resting heart rate.

The conclusions are that low heart rates and short, irregular SVTs without P-waves are predictors of incident AF, that the resting heart rate during AF varies within the same individual, and that the range of normal ambulatory heart rate is wide. (Less)
Please use this url to cite or link to this publication:
author
supervisor
opponent
  • Associate Professor Edvardsson, Nils, University of Gothenburg
organization
publishing date
type
Thesis
publication status
published
subject
keywords
Atrial fibrillation (AF), Heart rate, Ambulatory ECG, Holter monitoring, micro AF, premature atrial contractions, supraventricular tachycardia
in
Lund University, Faculty of Medicine Doctoral Dissertation Series
issue
2025:61
pages
90 pages
publisher
Lund University, Faculty of Medicine
defense location
Föreläsningssal 2007, Avdelningen för klinisk fysiologi och nuklearmedicin, Inga Marie Nilssons gata 47, vån 2, Skånes Universitetssjukhus i Malmö. Join by Zoom: https://lu-se.zoom.us/j/61530722505
defense date
2025-05-22 13:00:00
ISSN
1652-8220
ISBN
978-91-8021-714-9
language
English
LU publication?
yes
id
46ad2778-4b2b-4d23-9ac1-c039f7c2e7f1
date added to LUP
2025-04-23 13:28:37
date last changed
2025-05-20 11:31:29
@phdthesis{46ad2778-4b2b-4d23-9ac1-c039f7c2e7f1,
  abstract     = {{Atrial fibrillation (AF) is common condition among the elderly, and leads to<br/>increased risks of stroke, heart failure, dementia, and death. Diagnosing AF requires electrocardiograms (ECGs), and long recordings may be necessary since AF often occurs intermittently in its early stages. <br/>During AF, the heart rate is irregular, and sometimes inappropriately fast. This thesis includes four papers that study long-term ECGs for AF prediction and management.<br/><br/>In Paper I we used the population-based Swedish CArdioPulmonary bioImage<br/>Study to establish normal ranges for ambulatory heart rate during sinus rhythm. The normal range was wide, and largely independent of clinical correlates.<br/><br/>In Paper II and III we used the population-based Malmö Diet and Cancer Study to show that low heart rates at 24hECGs are associated with increased incidence of AF and that patients with short, irregular supraventricular tachycardias (SVTs) without discernible P-waves had substantially increased risk of AF (adjusted hazard ratio 4.95, 95% confidence interval (CI) 2.06-11.9).<br/><br/>Electrocardiograms are also used to measure resting heart rates during AF, to dose rate controlling drugs. In Paper IV we repeatedly sampled resting heart rate<br/>measurements in patients with at least 2 days of ambulatory ECGs with AF (n=832). A single measurement differed on average by 10% compared to the average resting heart rate.<br/><br/>The conclusions are that low heart rates and short, irregular SVTs without P-waves are predictors of incident AF, that the resting heart rate during AF varies within the same individual, and that the range of normal ambulatory heart rate is wide.}},
  author       = {{Persson, Anders P}},
  isbn         = {{978-91-8021-714-9}},
  issn         = {{1652-8220}},
  keywords     = {{Atrial fibrillation (AF); Heart rate; Ambulatory ECG; Holter monitoring; micro AF; premature atrial contractions; supraventricular tachycardia}},
  language     = {{eng}},
  number       = {{2025:61}},
  publisher    = {{Lund University, Faculty of Medicine}},
  school       = {{Lund University}},
  series       = {{Lund University, Faculty of Medicine Doctoral Dissertation Series}},
  title        = {{Atrial fibrillation and heart rate at long-term electrocardiograms}},
  url          = {{https://lup.lub.lu.se/search/files/217751626/Avhandling_Anders_Persson_LUCRIS.pdf}},
  year         = {{2025}},
}