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Figure 2 Left: Overall (up and down sequences) baroreflex sensitivity (BRS) before and after treatment with transdermal nitroglycerin (GTN) or no therapy in the two groups. Right: Corresponding changes in SD of RR intervals (RRSD) in the two groups. Dashed lines = control group; solid lines = GTN group; empty circles = visit 1; solid circles = visit 2. *p < 0.05; analysis of covariance (GTN vs. control group).
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