Preexcitation with different patterns in the same patient: which is the mechanism?

Presentación del caso

Paciente masculino de 30 años con historia de síndrome de WPW. ECGs registrados en dos ocasiones diferentes muestran diferentes patrones de pre-excitación.

Case presentation

A 30-year-old male patient with a history of WPW syndrome. ECGs recorded on two different occasions show different patterns of pre-excitation.

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