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Markers of Atrial Myopathy in the General Population : Prevalence, Predictors, and Inter-Relations

Johnson, Linda S LU ; Platonov, Pyotr G LU ; Conen, David ; Kennbäck, Cecilia LU ; Jujic, Amra LU ; Healey, Jeffrey S ; Holm, Hannes LU ; Sundström, Johan and Engström, Gunnar LU (2023) In JACC: Clinical Electrophysiology 9(11). p.2240-2249
Abstract

BACKGROUND: Atrial myopathy refers to structural and functional cardiac abnormalities associated with atrial fibrillation and stroke, but appropriate diagnostic criteria are lacking.

OBJECTIVES: This study aimed to assess prevalence, clinical correlates, and overlap between potential atrial myopathy markers.

METHODS: The population-based SCAPIS (Swedish CArdioPulmonary bioImage Study) prospectively included 6,013 subjects without atrial fibrillation with 24-hour electrocardiograms. Resting electrocardiograms measuring P-wave indices were collected at 1 screening site (n = 1,201), and a random sample (n = 385) had echocardiographic left atrial volume index (LAVi). Atrial myopathy markers were defined as ≥500 premature atrial... (More)

BACKGROUND: Atrial myopathy refers to structural and functional cardiac abnormalities associated with atrial fibrillation and stroke, but appropriate diagnostic criteria are lacking.

OBJECTIVES: This study aimed to assess prevalence, clinical correlates, and overlap between potential atrial myopathy markers.

METHODS: The population-based SCAPIS (Swedish CArdioPulmonary bioImage Study) prospectively included 6,013 subjects without atrial fibrillation with 24-hour electrocardiograms. Resting electrocardiograms measuring P-wave indices were collected at 1 screening site (n = 1,201), and a random sample (n = 385) had echocardiographic left atrial volume index (LAVi). Atrial myopathy markers were defined as ≥500 premature atrial complexes/24 h, LAVi ≥34 mL/m2, P-wave duration >120 milliseconds, or P-wave terminal force in V1 >4,000 ms·s. Clinical correlates included age, sex, body mass index, height, smoking, physical activity, coronary artery disease, diabetes, systolic blood pressure, antihypertensive medication, and low education.

RESULTS: Atrial myopathy was common; 42% of the sample with all diagnostic modalities available had ≥1 atrial myopathy marker, but only 9% had 2 and 0.3% had ≥3. Only P-wave duration and LAVi were correlated (ρ = 0.10; P = 0.04). Clinical correlates of premature atrial complexes, P-wave indices, and LAVi differed; current smoking (34% increase; P < 0.001), systolic blood pressure (4%/mm Hg increase; P = 0.01), diabetes (35% increase; P = 0.001), and coronary artery disease (71% increase; P = 0.003) were associated with premature atrial complexes, physical activity ≥2 h/wk was associated with increased LAVi (β-coefficient = 3.1; P < 0.0001) and body mass index was associated with P-wave duration (β-coefficient = 0.4/kg/m2; P < 0.0001).

CONCLUSIONS: In the general population, indirect markers of atrial myopathy are common but only weakly correlated, and their risk factor patterns are different. More studies are needed to accurately identify individuals with atrial myopathy with diagnostic methods.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
JACC: Clinical Electrophysiology
volume
9
issue
11
pages
2240 - 2249
publisher
Elsevier
external identifiers
  • scopus:85172259668
  • pmid:37676201
ISSN
2405-5018
DOI
10.1016/j.jacep.2023.07.012
language
English
LU publication?
yes
additional info
Copyright © 2023 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.
id
faf49400-54ae-4127-9159-e1defd5a81a9
date added to LUP
2023-09-21 13:49:18
date last changed
2024-04-19 01:14:27
@article{faf49400-54ae-4127-9159-e1defd5a81a9,
  abstract     = {{<p>BACKGROUND: Atrial myopathy refers to structural and functional cardiac abnormalities associated with atrial fibrillation and stroke, but appropriate diagnostic criteria are lacking.</p><p>OBJECTIVES: This study aimed to assess prevalence, clinical correlates, and overlap between potential atrial myopathy markers.</p><p>METHODS: The population-based SCAPIS (Swedish CArdioPulmonary bioImage Study) prospectively included 6,013 subjects without atrial fibrillation with 24-hour electrocardiograms. Resting electrocardiograms measuring P-wave indices were collected at 1 screening site (n = 1,201), and a random sample (n = 385) had echocardiographic left atrial volume index (LAVi). Atrial myopathy markers were defined as ≥500 premature atrial complexes/24 h, LAVi ≥34 mL/m2, P-wave duration &gt;120 milliseconds, or P-wave terminal force in V1 &gt;4,000 ms·s. Clinical correlates included age, sex, body mass index, height, smoking, physical activity, coronary artery disease, diabetes, systolic blood pressure, antihypertensive medication, and low education.</p><p>RESULTS: Atrial myopathy was common; 42% of the sample with all diagnostic modalities available had ≥1 atrial myopathy marker, but only 9% had 2 and 0.3% had ≥3. Only P-wave duration and LAVi were correlated (ρ = 0.10; P = 0.04). Clinical correlates of premature atrial complexes, P-wave indices, and LAVi differed; current smoking (34% increase; P &lt; 0.001), systolic blood pressure (4%/mm Hg increase; P = 0.01), diabetes (35% increase; P = 0.001), and coronary artery disease (71% increase; P = 0.003) were associated with premature atrial complexes, physical activity ≥2 h/wk was associated with increased LAVi (β-coefficient = 3.1; P &lt; 0.0001) and body mass index was associated with P-wave duration (β-coefficient = 0.4/kg/m2; P &lt; 0.0001).</p><p>CONCLUSIONS: In the general population, indirect markers of atrial myopathy are common but only weakly correlated, and their risk factor patterns are different. More studies are needed to accurately identify individuals with atrial myopathy with diagnostic methods.</p>}},
  author       = {{Johnson, Linda S and Platonov, Pyotr G and Conen, David and Kennbäck, Cecilia and Jujic, Amra and Healey, Jeffrey S and Holm, Hannes and Sundström, Johan and Engström, Gunnar}},
  issn         = {{2405-5018}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{11}},
  pages        = {{2240--2249}},
  publisher    = {{Elsevier}},
  series       = {{JACC: Clinical Electrophysiology}},
  title        = {{Markers of Atrial Myopathy in the General Population : Prevalence, Predictors, and Inter-Relations}},
  url          = {{http://dx.doi.org/10.1016/j.jacep.2023.07.012}},
  doi          = {{10.1016/j.jacep.2023.07.012}},
  volume       = {{9}},
  year         = {{2023}},
}