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Giant A wave in JVP indicated by arrow.
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Jugular vein wave showed a prominent pulse-like regular cannon waves (Fig. 1; Video 1).
Panel A: ECG showing junctional rhythm, LBBB, and long QTc interval. Panel B: Repeat ECG showing normal sinus rhythm with LBBB.
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Electrocardiogram showed accelerated junctional rhythm with complete LBBB and corrected QT of 479 milliseconds (Fig. 2A). His dyselectrolytemia was corrected and his rhythm reverted to sinus (Fig. 2B).
Pulmonary venous Doppler showing prominent 'a' reversal.
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Pulmonary venous Doppler showed prominent 'a' wave reversal (Fig. 3).