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Electrocardiography in 110 patients with systemic sclerosis: a cross-sectional comparison with population-based controls
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Biochemial structure and function.
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2014 (English)In: Scandinavian Journal of Rheumatology, ISSN 0300-9742, Vol. 43, no 3, 221-225 p.Article in journal (Refereed) Published
Abstract [en]


Patchy fibrosis of the myocardium is thought to cause conduction abnormalities in patients with systemic sclerosis (SSc). We compared the prevalence and type of rhythm/conduction disturbances in 74% of the SSc patients in Stockholm County and controls.

Method: A total of 110 SSc patients (age 62 ± 12 years) fulfilling the American College of Rheumatology (ACR) criteria for SSc and 105 gender- and age-matched controls participated in this study. A 12-lead resting electrocardiogram (ECG) was performed in all participants. The first 49 patients and 42 controls also underwent a 22-24-h Holter ECG recording. Associations with disease subsets, autoantibodies, cardiovascular risk factors, and left ventricular ejection fraction (LVEF), as estimated by echocardiography, were investigated.


Abnormal ECGs were found in 28% of patients and 17% of controls (p = 0.05). Atrioventricular (AV) and/or intraventricular (IV) conduction abnormalities were found in 15% of patients and 5% of controls (p < 0.01). Four patients, but no controls, had low anteroseptal R-wave/septal Q-wave patterns with narrow QRS complexes, simulating a septal wall infarction pattern. Patients had more abnormal Holter ECG recordings than controls (38% vs. 17%, p = 0.05). All participants with a normal resting ECG had an LVEF ≥ 50%.


Although ECGs are inexpensive, commonly available screening tools, to detect arrhythmias, such as frequent ventricular extrasystoles (VES), Holter tracings should be performed. The frequencies of AV and/or IV conduction abnormalities and septal Q waves/low R waves have not changed since 1985. The unmet need of anti-fibrotic treatment in SSc is underscored by these findings.

Place, publisher, year, edition, pages
2014. Vol. 43, no 3, 221-225 p.
National Category
Clinical Medicine
URN: urn:nbn:se:uu:diva-220520DOI: 10.3109/03009742.2013.843720ISI: 000335512300007PubMedID: 24392822OAI: oai:DiVA.org:uu-220520DiVA: diva2:705427
Available from: 2014-03-17 Created: 2014-03-17 Last updated: 2014-06-24Bibliographically approved

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