Heart rate recovery at 2 minutes after a pre-TAVI 6-minute walk test significantly predicted the 39 ± 63 m improvement in walking distance observed at 3 months post-procedure.
Observational (n=93)
Does heart rate recovery after a pre-TAVI 6-minute walk test predict functional improvement in adults with severe aortic stenosis undergoing TAVI?
Heart rate recovery 2 minutes after a pre-TAVI 6-minute walk test can predict which patients will experience functional improvement in exercise capacity after TAVI.
BACKGROUND: It was hypothesized that the time-appropriate return to a resting heart rate (HR) after cessation of exercise could be a marker for predicting outcomes in patients with heart failure (HF). We aimed to evaluate the prognostic value of HR recovery in functional improvement among adults with severe aortic stenosis undergoing percutaneous aortic valve implantation (TAVI). METHODS: We performed a 6 min walk test (6MWT) in 93 individuals before TAVI and 3 months after the procedure. The change in walking distance was calculated. During the pre-TAVI 6MWT, we analyzed the differences between baseline HR, HR at the end of the test, and HR at the 1st, 2nd, and 3rd minute of recovery. RESULTS: After 3 months, 6MWT distances improved by 39 ± 63 m and reached a total of 322 ± 117 m. Multiple linear regression proved the differences between HR after 2 min of recovery and baseline HR in pre-TAVI after a 6MWT was the only significant predictor of waking distance improvement during follow-up. CONCLUSIONS: Our study suggests that analysis of HR recovery after a 6MWT may be a helpful and easy parameter to assess improvements in exercise capacity after TAVI. This simple method can help to identify patients in whom no significant benefit in functional improvement can be expected despite successful valve implantation.
Aleksandrowicz et al. (Tue,) conducted a observational in severe aortic stenosis (n=93). Heart rate recovery assessment during 6-minute walk test was evaluated on Change in walking distance during 6-minute walk test. Heart rate recovery at 2 minutes after a pre-TAVI 6-minute walk test significantly predicted the 39 ± 63 m improvement in walking distance observed at 3 months post-procedure.