Isolated atrial myopathy and persistent severe cardiac conduction disorders presented as juvenile stroke: A case...

Area of Science:

• Cardiology
• Neurology
• Pathology

Background:

• Myocarditis can cause various arrhythmias and conduction abnormalities.
• Conduction disorders as the sole presentation of myocarditis are uncommon.
• These conduction issues may persist or resolve after the acute phase.

Purpose of the Study:

• To present a rare case of probable myocarditis.
• To describe isolated atrial cardiomyopathy and severe conduction disturbances.
• To discuss the association with acute stroke in a young woman.

Main Methods:

• Case report presentation.
• Clinical evaluation of a young woman with acute stroke.
• Cardiac assessment including electrocardiography and ventricular function evaluation.

Main Results:

• Probable myocarditis diagnosed.
• Preserved right and left ventricular function.
• Isolated atrial cardiomyopathy observed.
• Severe conduction disturbances: sinoatrial node dysfunction, atrial flutter, interatrial block, transient loss of atrial electromechanical activity, and persistent complete atrioventricular block.

Conclusions:

• Myocarditis can manifest with severe, isolated conduction abnormalities.
• Atrial cardiomyopathy and complete atrioventricular block can occur in myocarditis.
• This case underscores the diverse presentations of myocarditis, even with preserved ventricular function.