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. 2012 Jun 29;7(6):e39893. doi: 10.1371/journal.pone.0039893

Figure 2. Responses of LV functions to β-adrenoceptor stimulation.

Figure 2

Responses of heart rate (A), tau (B), LVESP (C), LVEDP (D), LVdP/dtmax (E), LVdP/dtmin (F), Ees (G) and Eed (H) to intravenous infusion of dobutamine are shown. *p<0.05 vs. Baseline (Base), †p<0.05 vs. LETO. n = 5∼6. tau =  time constant of left ventricular pressure decay; LVESP =  left ventricular end-systolic pressure; LVEDP =  left ventricular end-diastolic pressure; LVdP/dtmax =  left ventricular maximal slope of the systolic pressure increment; LVdP/dtmin =  left ventricular maximal slope of the diastolic pressure decrement; Ees =  end-systolic elastance; Eed =  end-diastolic elastance; 4-PBA = 4-phenylbutyric acid.