Sarcoidosis Masquerading as Atrial Fibrillation: Interesting Case Discussion as Well as Recent Advances in Diagnosis and Management of Cardiac Sarcoidosis.

This report presents a case of cardiac sarcoidosis initially manifested with atrial fibrillation. This behavior is very uncommon in spite of the fact that the disease is multisystemic, affecting predominantly the lungs. It is emphasized that the diagnosis of the cardiac involvement is difficult, and when this occurs, can lead to conducting system disturbances, heart failure or sudden death (SD).

Cardiac electrophysiological assessment in patients with sarcoidosis.

Background: Sarcoidosis is a multisystem granulomatous disease of unknown origin that can cause sudden death.

Objective: Electrophysiological evaluation of patients with suspected sarcoidosis with cardiac involvement.

Methods: We studied 22 patients with mean age of 55.

Persistent inappropriate sinus tachycardia after radiofrequency ablation of left lateral accessory pathway.

A patient with palpitations and narrow QRS tachycardia was evaluated. In the EP study an atrioventricular reentrant tachycardia mediated by a left lateral accessory pathway was identified and catheter ablation was performed with success. A week later she returned with palpitations and pre-syncope.

Slow junctional rhythm during catheter ablation of right posteroseptal accessory pathway causing transient atrioventricular block.

A male patient with palpitations and syncope during an episode of atrial fibrillation was evaluated. After DC cardioversion, the ECG showed a pattern of pre-excitation compatible with right posteroseptal bypass tract. The patient was submitted to RF.