Electrophysiologic study is a useful invasive procedure for investigating unexplained syncope, dizziness, and palpitations, and for directing non-pharmacological therapy in patients with chronic Chagas' heart disease.
Supports invasive evaluation for unexplained symptoms in Chagas heart disease; leaves open need for prospective validation before practice change.
Cardiac arrhythmias are common in chagasic patients. Electrophysiologic study is an invasive procedure for the investigation of sinus node function, atrioventricular node conduction and intraventricular (His-Purkinje) conduction and the mechanism of tachycardias. It is useful in elucidating syncope, dizziness and tachycardiac palpitations that remain unexplained by non-invasive diagnostic methods. It is fundamental in directing non-pharmacological therapy, especially in "sudden death" survivors. Chagasic patients may benefit from electrophysiologic study after a critical clinical evaluation.
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Scanavacca et al. (1995) studied this question.
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