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- AVB, atrioventricular block
- ELISA, enzyme linked immunosorbent assay
- FS, fractional shortening
- IgG, immunoglobulin G
- LAFB, left anterior fascicular block
- LBBB, left bundle branch block
- LPFB, left posterior fascicular block
- LVEDD, left ventricular end diastolic diameter
- LVM, left ventricular mass
- MEANS, modular ECG analysis system
- RBBB, right bundle branch block
Lyme disease is a systemic disorder caused by Borrelia burgdorferi. While acute cardiac manifestations of borrelioses are not doubted, chronic cardiac consequences are currently under investigation. The aim of this study was to explore associations between anti-Borrelia immunoglobulin G (IgG) antibodies and the risk of cardiac disorders.
METHODS
The Study of Health in Pomerania is a cross sectional study in North East Germany. A random sample from the population aged 20–79 years was drawn. The study population comprised 4310 subjects. All participants gave informed written consent. The study was approved by the local ethics committee.
Sociodemographic and clinical characteristics were assessed and medication was classified according to the anatomic, therapeutic, and chemical code. Anti-Borrelia IgG were determined by enzyme linked immunosorbent assay (ELISA) (Virion, Rüschlikon, Switzerland). A titre of > 5 IU/ml was considered elevated and a titre of > 10 IU/ml was considered positive. Of the 4310 subjects, 36 refused to have blood withdrawn or had missing data on Borrelia serology. In all, 4274 individuals (2174 women) were available for the present analysis.
Twelve lead ECGs were processed by the modular ECG analysis system (MEANS). For this study, P, PR and QRS duration and data on definite left bundle branch block (LBBB), right bundle branch block (RBBB), incomplete RBBB, left …