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375 Exam 2

Dysrhythmias

TermDefinition
hyperkalemia changes in T wave, V tach; caused by renal failure
hypokalemia early ventricular contraction, bradycardia, V tach/fib
hypomagnesmia changes in QRS complexes, V tach
hypercalcemia depressed ST segment
hypocalcemia elevated ST segment, V tach
hyperthyroidism tachycardia
hypothyroidism bradycardia
sinus bradycardia treatment monitor adequate perfusion, consider transcutaneous pacing, administer atropine, consider epinephrine or dopamine
atropine dose limit 3 mg, only given every 3 to 5 minutes
sinus tachycardia causes stress, fever and pain, caffeine, hypovolemia, anxiety, anemia, hypoxia, hypoglycemia
tachycardia manifestations hypotension, dizziness because of decreased CO
sinus tachycardia interventions treat cause, attempt vagal maneuvers, beta or calcium channel blockers
1st degree heart block PR interval prolonged, caused by myocardial infarction, hyperthyroidism, increasing age, electrolyte imbalance
premature atrial contraction irregular atrial rate, P wave before QRS will have different shape; may feel palpitations or skipped beats; continuous monitor - precursor to a fib or flutter
Created by: ahommel
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