T wave positivity in lead aVR is associated with mortality after transcatheter aortic valve implantation.

INTRODUCTION

Transcatheter aortic valve implantation (TAVI) is an alternative to surgical aortic valve replacement (SAVR) in patients with increased comorbidity. Lead aVR in surface ECG has valuable information about prediction of mortality in many cardiovascular diseases. Our aim was to determine the relationship between ischemic changes in lead aVR and mortality in TAVI patients.

MATERIAL AND METHODS

We retrospectively examined 86 patients with TAVI. The ST segment deviation in lead aVR (STaVR) and T wave polarity (TPaVR) on surface ECG were measured. The absolute values of TPaVR and STaVR were calculated. A ratio (TP/STaVR or vice versa) was obtained from the division of the larger absolute value by the smaller one.

RESULTS

The patients were divided into two groups as living and deceased. The living group had 68 patients, and the deceased group had 18 patients. The number of positive TPaVR patients after TAVI, TPaVR after TAVI, and TP/STaVR ratio after TAVI were significantly higher in the deceased group. The deceased group had a significantly shorter aortic annulus-LMCA distance. Presence of positive TPaVR (OR = 8.765, 95% CI: 1.088-70.618, = 0.041), aortic annulus-LMCA distance (for each 1 mm increase, OR = 0.306, 95% CI: 0.158-0.595, < 0.001) and TP/STaVR ratio (for each 0.1 increase, OR = 1.966, 95% CI: 1.276-3.024, = 0.002) were determined as independent predictors for mortality.

CONCLUSIONS

Ischemic changes in lead aVR may provide valuable information about mortality after TAVI.