Recognition
- • Short PR <120 ms
- • Delta wave (slurred QRS upstroke)
- • QRS >110 ms
- • T wave changes
Key findings
- • Type A: positive delta V1 (left-sided pathway)
- • Type B: negative delta V1 (right-sided)
Clinical importance
- • AVRT (narrow / wide QRS)
- • Pre-excited AF — risk of VF; avoid AV-nodal blockers
Management pearls
- • AVRT: vagal manoeuvres, adenosine
- • Pre-excited AF: procainamide / DC cardioversion
- • Definitive: catheter ablation
Related in WardRound
