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Lyme Carditis and High-Degree Atrioventricular Block
Douglas Wan1, Crystal Blakely1, Pamela Branscombe1
1Department of Medicine, Division of Cardiology, Queen's University, Kingston, Ontario, Canada.
The American Journal of Cardiology
|March 31, 2018
Summary
Lyme disease is rising in Canada, with cardiac complications like heart block becoming more common. Early diagnosis of Lyme carditis is crucial to prevent severe heart issues and the need for pacemakers.
Area of Science:
- Cardiology
- Infectious Diseases
- Public Health
Background:
- Lyme disease incidence has increased sixfold in Canada since 2009.
- Lyme carditis, particularly high-degree atrioventricular block, is an emerging concern.
- Diagnosis can be challenging due to varied, nonspecific presentations.
Purpose of the Study:
- To present the first Canadian series of Lyme carditis cases.
- To highlight the clinical manifestations of Lyme carditis.
- To emphasize the importance of early diagnosis and management.
Main Methods:
- Retrospective case series.
- Analysis of 5 cases of Lyme carditis over a 2-year period.
- Review of clinical presentations and outcomes.
Main Results:
- Five cases of high-degree atrioventricular block due to Lyme carditis were identified.
- Presentations varied, requiring a high index of suspicion.
- Prompt recognition and management were associated with avoiding permanent pacemaker implantation.
Conclusions:
- Lyme carditis is an important cause of conduction disorders in Canada.
- Early suspicion and diagnosis are critical for effective management.
- Timely intervention may prevent the need for permanent pacemakers.
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