Ventricular tachycardia electrocardiogram


 * Associate Editor-In-Chief:, Avirup Guha, M.B.B.S.[mailto:avirup.guha@gmail.com]

EKG Findings

 * 1) Abnormal and wide QRS complexes with secondary ST segment and T wave changes.
 * 2) * Usual QRS duration is > 0.12 seconds, may be shorter if the ectopic focus is located in the ventricular septum.
 * 3) * The secondary ST segment and T wave changes are in a direction that is opposite the major deflection of the QRS.
 * 4) * A ventricular rate between 140 and 200 BPM.
 * 5) * When the rate is >200 and has a sine wave appearance, it is called ventricular flutter.
 * 6) * When the rate is <110 BPM it is called non-paroxysmal VT.
 * 7) A regular or slightly irregular (up to 0.03 seconds) rhythm.
 * 8) Abrupt onset and termination.
 * 9) AV dissociation.
 * 10) * Atrial rate slower than ventricular rate.
 * 11) * No relationship between atrial activity and ventricular activity.
 * 12) * There can be VA conduction.
 * The RP interval is >0.11 seconds.
 * Occurs in about 50% of cases.
 * Uncommon when the ventricular rate is rapid (only 1/7 when the rate was>200).
 * 1) Capture beats.
 * 2) * Occurs when a supraventricular impulse is conducted and captures the ventricle.
 * 3) * They are rare.
 * 4) Fusion beats.
 * 5) * Rare in VT at a rapid rate.