Final answer:
RVOT VT morphology refers to the characteristics of ventricular tachycardia originating from the right ventricular outflow tract, which typically presents with a left bundle branch block pattern and a superior axis on an ECG. It often responds well to ablation therapy and is less dangerous in individuals without structural heart disease.
Step-by-step explanation:
The student is asking about the morphology of ventricular tachycardia (VT) originating from the right ventricular outflow tract (RVOT). RVOT VT typically exhibits a left bundle branch block (LBBB) pattern on the ECG because the electrical impulse originates in the right ventricle and spreads to the left. The heart rhythm can be regular or, less commonly, irregular. The VT originating from the RVOT is often associated with a superior axis, meaning the QRS complexes are positive in leads II, III, and aVF and negative in leads I and aVL.
Because RVOT VT is focal in origin, originating from a single point within the RVOT, it typically responds well to ablation therapy. This is a procedure where the area producing the abnormal electrical signals is destroyed. It's also important to note that RVOT VT is generally considered to be one of the less dangerous types of VT, particularly when it occurs in individuals without structural heart disease.