Background: Although diastolic flow reversal (DFR) in the descending aorta, assessed via transesophageal echocardiography (TEE), is a simple and easy indicator for evaluating aortic regurgitation, the association between DFR pattern and clinical outcomes following transcatheter aortic valve implantation (TAVI) is unclear. The purpose of this study was to evaluate the effect of DFR patterns on clinical outcomes following TAVI.
Methods and results: Two-hundred and eleven patients (mean age, 83.6±5.7 years; 69% female) who underwent TAVI were retrospectively assessed via intraprocedural TEE. DFR was evaluated using pulsed-wave Doppler in the descending aorta before and after TAVI. The primary endpoint was major adverse cardio-cerebrovascular events (MACCEs). Although only 7 patients (3.3%) had moderate or severe paravalvular leak, as assessed by color Doppler echocardiography, holo-DFR (HDFR) was observed in 33 patients (16.0%) after TAVI. MACCEs occurred in 40 patients during the median follow up of 282 days (interquartile range: 160-478 days). The estimated cumulative MACCE-free survival at 1 year was significantly lower in patients with HDFR than in those without HDFR. A Cox proportional hazards analysis revealed that HDFR after TAVI was independently associated with MACCEs.
Conclusions: HDFR was associated with an increased risk of MACCEs after TAVI. DFR evaluated by intraprocedural echocardiography could serve as a simple and easy method for predicting clinical outcomes.
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