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Cardiac sarcoidosis: the Christchurch experience
P Adamson1, I Melton, J O'Donnell
1Department of Cardiology, Christchurch Hospital, Christchurch, New Zealand.
Internal Medicine Journal
|January 24, 2014
Summary
Cardiac sarcoidosis diagnosis and treatment were reviewed in 18 patients. Cardiac magnetic resonance imaging (CMR) showed high sensitivity, while biomarkers were often normal. Most patients received immunosuppression and cardiac devices, with lower-than-expected long-term mortality.
Area of Science:
- Cardiology
- Immunology
- Internal Medicine
Background:
- Cardiac sarcoidosis is a rare but serious condition affecting the heart.
- Early diagnosis and treatment are crucial for improving patient outcomes.
Purpose of the Study:
- To provide an overview of the diagnosis, treatment, and outcomes of cardiac sarcoidosis patients.
- To evaluate the utility of cardiac magnetic resonance imaging (CMR) and biomarkers in diagnosing cardiac sarcoidosis.
- To assess the effectiveness of current treatment strategies, including immunosuppression and cardiac device implantation.
Main Methods:
- Retrospective review of 18 patients diagnosed with cardiac sarcoidosis between 2005 and 2012.
- Analysis of diagnostic tools including cardiac magnetic resonance imaging (CMR), angiotensin-converting enzyme (ACE) levels, cardiac troponin (cTn), and endomyocardial biopsies.
- Review of treatment modalities such as immunosuppressive therapy and cardiac device implantation (pacemakers, defibrillators).
Main Results:
- Cardiac magnetic resonance imaging (CMR) demonstrated high diagnostic sensitivity, with all 12 patients scanned showing abnormalities.
- Biomarkers like angiotensin-converting enzyme (ACE) and cardiac troponin (cTn) were frequently within normal limits.
- The primary presentations were high-grade atrioventricular conduction block and congestive heart failure (6 patients each), followed by ventricular tachycardia and atrial fibrillation.
- Most patients (16/18) received immunosuppressive therapy, and 12 patients had cardiac devices implanted.
- During a median follow-up of 4.8 years, only two patients died.
Conclusions:
- Cardiac magnetic resonance imaging (CMR) is a highly sensitive tool for diagnosing cardiac sarcoidosis.
- Biomarkers (ACE, cTn) have limited diagnostic value in this patient cohort.
- Cardiac sarcoidosis frequently leads to significant arrhythmias or heart failure.
- Treatment with immunosuppression and cardiac devices is effective, and long-term mortality appears lower than previously reported.
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