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Fig. 8. Effects of bolus injections of adrenaline, phenylephrine and isoproterenol
(2 and 10 µg kg-1) on haemodynamic variables in the recovered
South American rattlesnakes Crotalus durissus. AD represent
the group with a vascular occluder, and EG represent the group without
a vascular occluder. Psys, mean systemic blood pressure;
PCV, central venous blood pressure;
fH, heart rate; MCFP, mean circulatory filling pressure.
Black bars represent control values. Grey bars represent values after
injection of the various adrenergic agonists. Values are means ±
S.E.M. (N=4) for each group. * indicates a significant
difference relative to control values. (1 cm H2O=0.098 kPa.)