Journal of Medical Cases, ISSN 1923-4155 print, 1923-4163 online, Open Access
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Case Report

Volume 9, Number 2, February 2018, pages 54-57

A Case of Supraventricular Tachycardia Associated With Wolff-Parkinson-White Syndrome


Figure 1.
Figure 1. ECG upon arrival shows regular narrow complex tachycardia beating at a rate of 160 beats/min. Axis is normal with no acute ST segment changes. Non-specific ST segment depression and T wave inversion can be seen over the infero-lateral leads. Inverted P waves may be visible de-forming the ST segment indicating that atrial depolarisation occurs later than ventricular depolarisa-tion. In a patient with a narrow complex tachycardia the presence of such late P waves is frequently the only ECG evidence that the patient has an accessory pathway rather than a much more common atrioventricular nodal re-entrant tachycardia (AVNRT).
Figure 2.
Figure 2. The classic triad of electrocardiographic findings in Wolff-Parkinson-White syndrome: short PR interval, broad QRS complex and delta wave.