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Contents
  • Initial Testing
  • Advanced Imaging Techniques
  • When a Biopsy is Needed

Diagnosing Myocarditis: The Tests You Need to Know

Diagnosing Myocarditis: The Tests You Need to Know

Why It Matters

Diagnosing myocarditis can be tricky due to its varied symptoms and resemblance to other heart conditions. Learn about the key tests used to confirm its presence.
Contents
  • Initial Testing
  • Advanced Imaging Techniques
  • When a Biopsy is Needed

Initial Testing

Doctors start with basic tests like an electrocardiogram (ECG) and blood tests for cardiac biomarkers such as troponin. Elevated troponin levels can indicate heart muscle damage, but they aren't specific to myocarditis. Chest X-rays may also be used to check for heart enlargement or fluid in the lungs.

Advanced Imaging Techniques

Cardiovascular Magnetic Resonance (CMR) imaging is a valuable tool for diagnosing myocarditis. It can detect inflammation, scarring, and changes in heart muscle function. The Lake Louise Criteria, which include T1 and T2 mapping, are guidelines used in CMR to suggest myocarditis.
Myocarditis is a condition characterized by inflammation of the heart muscle, often presenting with varied symptoms and requiring a combination of tests for accurate diagnosis.

When a Biopsy is Needed

In some cases, an endomyocardial biopsy (EMB) is performed to obtain a definitive diagnosis. This involves taking a small tissue sample from the heart to look for inflammation and other specific changes under a microscope. It's usually reserved for severe or unclear cases.

FAQs

What is an ECG?

An ECG records the electrical activity of your heart to detect abnormalities.

Why is troponin important?

Elevated troponin levels indicate heart muscle damage.

What does CMR imaging show?

CMR shows heart inflammation, scarring, and functional changes.

When is a biopsy needed?

A biopsy is needed for severe or unclear cases to confirm myocarditis.

The Bottom Line

Accurate diagnosis of myocarditis requires a combination of tests and clinical evaluation.
Consult Doctronic to understand which tests are best for diagnosing myocarditis in your case.
Additional References
  1. Ammirati E, Moslehi JJ. Diagnosis and Treatment of Acute Myocarditis: A Review. JAMA 2023; 329:1098.
  2. Kociol RD, Cooper LT, Fang JC, et al. Recognition and Initial Management of Fulminant Myocarditis: A Scientific Statement From the American Heart Association. Circulation 2020; 141:e69.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic.