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Bar graphs show the comparison of (a) SBP ≥ 90 mmHg; (b) 60 ≤ SBP < 90 mmHg between the placebo-treated and rhBNP-treated groups. *p < 0.05 is considered significant. NS: not significant; rhBNP: recombinant human B-type natriuretic peptide; SBP: systolic blood pressure
