Introduction Studies have shown that 80% of wide QRS tachycardias are ventricular tachycardias (VT). This number rises to 90% if there is underlying structural heart disease.– Criteria for differentiating between VT and supraventricular tachycardia (SVT) exist, and they are important in clinical practice, but not necessarily for the purpose of providing an exact diagnosis in acute settings.– Although the criteria have been validated, they are not as effective at ruling out conditions as one might think. A real-world study showed […]