In patients with Tetralogy of Fallot and an indication for primary prevention ICD (NSVT, induced VT during EPS, or Low LVEF), should pulmonary valve interventions be offered PRIOR to ICD to assess if improvement in VT burden/EF?

There is a lot to consider for this question.

First, appropriate indications for primary prevention ICD in tetralogy of Fallot are not at all clear. While arrhythmias and left ventricular dysfunction are clearly risk factors for malignant arrhythmias, that is very different from saying that individua...