Sudden rate acceleration in a 41-year-old man with a wide QRS tachycardia

A 41-year-old man came to the emergency department because of the sudden onset of palpitations and dizziness. It started when he was celebrating the championship of his soccer team in a pub nearby. As shown in Figure  1A, during the registration of a 12-lead electrocardiogram (ECG) in the first heart aid clinic, a regular wide QRS tachycardia suddenly accelerated accompanied by a drop in blood pressure. The emergency physician terminated the arrhythmia by electrical cardioversion. Figure 1B shows the ECG there after.
Source: Heart Rhythm - Category: Cardiology Authors: Tags: Josephson and Wellens ECG Lessons: A Monthly Visit to the 12 lead ECG Source Type: research