Asymptomatic Evaluation of WPW
From Ask Dr Wiki
- RR less than 250 ms
- Intermittent preexcitation on EKG at similiar heart rates. Use holter with good delta
- Disappearance of delta during GXT
- Disappearance of delta with less than Procainamide 500mg means AP refractory exceeds 270ms.
- AP refractory period less than 270 ms
- Look for memory T waves on holter with loss of delta
