Heart Rate	Contractile Force	TPR	Blood Pressure
Isoproterenol	Increases due to activation of beta1 receptors in SA and AV nodes	Increases due to activation of beta 1 receptors on myocardial cells.	Decreases due to activation of beta 2 receptors	cardiac output x total peripheral vascular resistance
Norepinephrine	Decrease due to reflex increase in vagal tone on SA and AV nodes	Increases due to effects on beta1-ARs on myocardial cells	Increases due to activation of alpha1-ARs on vascular smooth muscle cells	Increases due to effects on total peripheral vascular resistance
Low Doses of Epi	Increases due to beta1-ARs on SA and AV nodal tissues	Increases due to activation of beta1-ARs on myocardial cells	Decreases due to preferential activation of beta2-ARs, at these doses there would be little activation of alpha1-ARs	Similar to isoproterenol; the net effect will be the activity seen on cardiac output and total peripheral vascular resistance
High Doses of Epi	Similar to the effects of norepinepherine	Increases due to beta1-ARs on myocardial cells	Increases due to activation of alpha1-ARs on vascular smooth muscle cells. Notice how at this dose the predominate effect is via the alpha1-ARs not the beta2-AR mediated decrease in total peripheral vascular resistance.	Increases due to activation of alpha1-ARs on vascular smooth muscle cells