ECG features of a VT

What are the ECGs features of ventricular tachycardia?

  • Heart rate 150-250 bpm
  • QRS-complex most >140ms, commonly >160ms
  • The tips of the R wave and the T wave often have a different vector; one is positive and the other negative, or the other way around. We call this an R-T discordance.
  • The main vector is often found in “no-man’s-land"; that is, the electric heart axis is not definable at all.

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