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Figure 4 Changes from baseline in hemodynamic measurements after GTN (n = 10) and albuterol (ALB, n = 10) after saline placebo or L-NMMA administered 15 min before GTN/ALB. CO = cardiac output; DBP = diastolic blood pressure; HR = heart rate; IPDVP = height of inflection point of DVP measured as percent amplitude; SBP = systolic blood pressure; SVR = systemic vascular resistance. Percent change from baseline of the IPDVP refers to change in percent units (e.g., fall from 80% to 60% = [80–60]/80 = 25%). *p < 0.05 for L-NMMA vs. saline. **p < 0.01 for L-NMMA vs. saline. Open box = saline; dotted box = L-NMMA.
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