The group of figures on the right is painted in a soft feathery style reminiscent of his work of the later 1870s, while the umbrellas and the couple on the left are painted in a harder manner with more distinct outlines and subdued steely colors.
Nitroprusside is light sensitive; both bottle and tubing should be wrapped in aluminum foil. Before initiating nitroprusside, administer a beta-blocker to counteract the physiologic response of reflex tachycardia that occurs when nitroprusside is used alone.This physiologic response increases shear forces against the aortic wall, thus increasing dP/dt. The objective is to keep the heart rate at 60-80 bpm.etoprolol (Lopressor, Toprol XL). Metoprolol is a selective beta1-adrenergic receptor blocker that decreases the automaticity of contractions. During IV administration, carefully monitor the blood pressure, heart rate, and electrocardiogram (ECG).
1. These drugs are competitive antagonists of the beta adrenergic receptors 2. Beta blockers are either selective for the beta1 receptor or nonselective beta1 and beta2 antagonists. 3. Propranolol is the prototype Beta Blocker as well as the prototype of a nonselective beta blocker. 4.ntegrate pharmacodynamic principles to understand the actions of drugs that interact with the adrenergic receptors and how these interactions are relevant to dental practice. 2. Understand the effects of epinephrine and norepinephrine on the cardiovascular system. 3.