Objectives: The aim of this report is to characterize the impact of balloon aortic valvuloplasty (BAV) in patients not undergoing aortic valve replacement in the PARTNER (Placement of AoRtic TraNscathetER Valves) trial.
Background: The PARTNER trial is the only randomized trial with independently adjudicated data of inoperable severe symptomatic aortic stenosis patients, allowing outcome analysis of unoperated-on patients.
Methods: The design and initial results of the PARTNER trial (Cohort B) were reported previously. After excluding patients with pre-randomization BAV, we compared patients undergoing BAV within 30 days of randomization (BAV group) with those not having BAV within 30 days of randomization (no BAV group) to characterize the use and impact of BAV.
Results: In the PARTNER Cohort B study, 179 inoperable patients were randomized to standard treatment including 39 patients (21.8%) who had undergone a BAV before randomization (previous BAV group). Of the 140 patients who did not have BAV before enrollment in the study, 102 patients (73%) had BAV within 30 days of study randomization (BAV group). Survival at 3 months was greater in the BAV group compared with the no BAV group (88.2%; 95% confidence interval [CI]: 82.0% to 94.5% vs. 73.0%; 95% CI: 58.8% to 87.4%). However, survival was similar at 6-month follow-up (74.5%; 95% CI: 66.1% to 83.0% vs. 73.1%; 58.8% to 87.4%). There was improvement in quality of life parameters when paired comparisons were made between baseline and 30 days and 6 months between the BAV and no BAV groups, but this effect was lost at 12-month follow-up.
Conclusions: BAV improves functional status and survival in the short term, but these benefits are not sustained. BAV for aortic stenosis patients who cannot undergo aortic valve replacement is a useful palliative therapy. (THE PARTNER TRIAL: Placement of AoRTic TraNscathetER Valve Trial; NCT00530894).
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