Dx – Complete heart block
- P-P rhythm itself is regular.
- R-R rhythm itself is regular.
- P and QRS are completely dissociated. (Discharge from SA node does not reach to ventricle and so ventricle escape with its own discharging focus)
- QRS complexes may be narrow (if ventricular escape from AV node or bundle of His) or broad (if ventricular escape from distal Purkinjg fibre)