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The relationship of cardiac function and HR. (a) The different change of HR during baseline, 6th month, and 12th month follow-up between the decreasing HR and nondecreasing HR group. (b) The level of NT-proBNP of the two groups. (c) The level of E/e′ of the two groups. (d) The change of e′ between the two groups. Values are given in the form of mean ± SD. ∗∗∗P < 0.001 versus the baseline group.
