RESUMEN
Persistent Junctional reciprocating tachycardia [PJRT] is an arrhythmia mostly seen in infants and children, but is reported in the older age group as well. It is an easy diagnosis with [awareness of the mind]. Once confirmed by electro-physiological study, the management is simplified. Radiofrequency ablation of the accessory pathway gives complete cure in almost all cases, especially so, for those with the persistent form. The tachycardia when untreated could induce the so called Tachycardia Induced Cardiomyopathy [TIC] which is reversible. We report the case of a 64-year-old lady with spontaneously relapsing and remitting PJRT which remained undiagnosed. Ultimately, a complete cure was achieved with the help of electro-physiology study and radiofrequency ablation