Patient population:
This was a prospective interventional study conducted in two tertiary
care centers. Ethics committee approval for the study was obtained from
each of the centers.
Inclusion criteria: Informed consent was obtained from patients
undergoing accessory pathway ablation. Those who underwent successful
radiofrequency ablation of AP were included in the study.
Exclusion criteria: The following patients were excluded
Patients with multiple APs
2. Atriofascicular pathways
3. Patients with concealed septal AP where distinguishing transient
retrograde conduction via AP or AV nodal system was inconclusive.
However, septal accessory pathways with manifest preexcitation were
included in the study.
4. Patients who had COPD (Chronic obstructive pulmonary disease) and
bronchial asthma where intravenous adenosine could lead to an acute
exacerbation.
Multiple APs, atriofascicular pathway and concealed septal AP were
diagnosed during the electrophysiological study (EPS) and hence patients
with these pathways were excluded after EPS.