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Vasoactive Drugs69
Unit II
Question | Answer |
---|---|
Relaxes arterial and venous smooth muscle, reducing preload and SVR; Hypotension, HA, vomiting, flushing. | Nitroglycerin (Tridil) |
Direct arterial vasodilation reduces SVR & BP; reduces both preload and afterload; intraarterial monitoring of BP recommended; Sings of thiocyanate toxicity include anorexia, nausea, fatigue, disorientation. | Sodium Nitroprusside (Nipride) |
The predominant s/effect of all nitrates. | Headache (Tylenol for HA) |
These drugs reduce myocardial contractility, HR, SVR, & BP, all of which reduce oxygen demand. | B-Adrenergic Blockers |
Drug of choice for CP that is unrelieved by NTG; reduces preload & afteroad; decreases cardiac workload by lowering myocardial O2 consumption, reducing contractility and decreasing BP, HR, Fear, & Anxiety. | Morphine Sulfate |
Is a selective B-adrenergic agonist & works primarily on the B-1 receptors in the heart; Does not increase SVR & is preferred for short term treatment of ADHF. | Dobutamine |
Increasing force of contraction. | Inotropic |
Increasing heart rate. | Chronotropic |