Mean age was 79±6.2 yrs. Male gender was 42 (61.7%). Mean logistic Euroscore and STS score were 25.2±17.3 and 9.1±9.1, respectively. Mean grades of aortic regurgitation at baseline, before and after post dilatation were 1.3±1.1, 2.3±0.7 and 0.8±0.6, respectively. CT scan analysis showed annular coronal diameter 26±2mm, sagittal diameter 22±3mm, mid-sinusal diameter 36±4mm, sinus-tubular junction 27±5mm, annular eccentricity index 0.9±0.1. Mean number of calcified commisures 1.9± 1.1, mean number of annular calcium spots 2.3±1.2. Edwards valve was used in 13 (19.1%), while CoreValve in 55 (80.8%). Mean valve size was 27.1±2.2 mm. Mean balloon size was 25.6±2.3mm. Postdilatation was effective in reducing AR by 1 grade in 42 patients (79%). Effective post dilatation was achieved in 100% of patients with a “post dilatation balloon diameter/ coronal diameter ratio” 0.85-1.07. Outcome of post dilatation was not influenced by the annular eccentricity index. AR following postdilatation was more in patients with heavily calcified annulus. 1 patient (1.5%) had annular tear following post dilatation. 30 days echocardiographic follow up showed 1.1±0.9 AR.