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8 Cards in this Set
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- Back
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What is the action of Ca Channel Blockers?
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inhibit calcium ion influx across the cell membrane in cardiac and vascular smooth muscle to produce relaxation; dilates coronary arteries, slows SA/AV node conduction and dilates peripheral arteries
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What are Ca Channel Blockers used for?
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chronic stable angina pectoris, vasopastic angina, dysrhythmias, HTN, and unstable angina
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What are the most common side effects of Ca Channel Blockers?
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dysrhythmias and edema, also dizziness, HA, fatigue, drowsiness and flushing
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What are the contraindications of Ca Channel Blockers?
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2nd/3rd degree heart block, sick sinus syndrome, hypotension of <90mm Hg systolic
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What are some precautions in using Ca Channel Blockers?
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congestive heart failure since edema may be increased. Hypotension may worsen since BP is decreased. hepatic disease pts should use cautiously since they are metabolized in the liver and excreted by the kidneys
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What are some possible interactions of Ca Channel Blockers?
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increased levels of digoxin and theophylline
increased effects of beta-blockers and antihypertensives |
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What are some priority assessments when giving Ca Channel Blockers?
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BP,pulse, respirations, ECG intervals
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What is the suffix on the end of most Ca Channel Blockers?
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-dipine
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