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RN 35B CH. 42 CARDIAC GLYCOSIDES, ANTIANGINALS, AND ANTIDYSRHYTHMICS QUESTIONS AND ANSWERS!!
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RN 35B CH. 42 CARDIAC GLYCOSIDES, ANTIANGINALS, AND ANTIDYSRHYTHMICS QUESTIONS AND ANSWERS!!
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RN 35B CH. 42 CARDIAC GLYCOSIDES, ANTIANGINALS, ANDANTIDYSRHYTHMICS QUESTIONS AND ANSWERS!!
Cardiac Glycosides
[Action]
Answers :Contract heart, decrease heart rate, and decrease conduction of heart
cells.
Inhibits sodium-potassium pump, resulting in an increase in intracellular sodium.
This increase leads to an influx of calcium, causing the cardiac muscle fibers to
contract more efficiently.
Cardiac Glycosides
[Uses]
Answers :Uses: heart failure; atrial fibrillation and atrial flutter through negative
chronotropic and negative dromotropic effects.
Atrial Fibrillation
[Management]
Answers :Cardiac dysrhythmia with rapid uncoordinated contractions of atrial
myocardium.
Mgmt: Calcium Channel Blocker - verapamil (Calan)
Atrial Flutter
Answers :Cardiac dysrhythmia with rapid contractions of 200 to 300 beats/min.
, Thromboemboli Prevention
Answers :Tx: warfarin (Coumadin)
Heart Failure (HF)
Answers :Heart muscle (myocardium) weakens and enlarges, losing its ability to
pump blood through the heart and into the systemic circulation.
aka Cardiac Failure (CF), Pump Failure.
Causes of HF
Answers :Chronic Hypertension
Myocardial Infarction (MI)
Coronary Artery Disease (CAD)
Valvular Heart Disease
Congenital Heart Disease
Arteriosclerosis
Cardiomegaly (increased heart size)
Left-Sided Heart Failure
Answers :Left ventricle does not contract sufficiently to pump the blood returned
from the lungs and left atrium out through the aorta into the peripheral circulation.
Excessive amounts of blood back up into lung and tissue.
Shortness of breath and dyspnea.
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