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Fig. 3. Effect of norepinephrine dose (1 µg kg-1 or 5 µg
kg-1) on (A) heart rate (fH), (B) pulmonary
(
pul) and systemic
(
sys) blood flow, (C)
pulmonary (Ppul) and systemic (Psys)
pressure, (D) pulmonary (Rpul) and systemic
(Rsys) resistance, (E) total blood flow
(
tot) and (F) stroke volume
(Vstot). a indicates a significant difference
(P<0.05) compared with resting conditions, and b
indicates a significant difference (P<0.05) compared with the
conditions following injection of 1 µg kg-1 norepinephrine.
N=8.