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36 Cards in this Set
- Front
- Back
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What is the worst heart rhythm?
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V-fib.
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What is the most common cardiac complication?
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Acute MI.
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What conditions predispose one to dysrhythmias?
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Hypoxia, electrolyte imbalance, medications, CHF, nervous stimulation, toxins, hypertophy, physical irritation, and infections.
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Which medications can predispose you to dysrythmias?
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Digoxin- becasue of dig toxicity.
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What is typical of dig toxicity?
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Pt sees a green halo around objects.
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How can you tell if the pulse is going toward the positive electorde?
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It shows upward.
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How can you tell if the pulse is going toward the negative electrode?
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It shows downward.
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What is an isoelectric line?
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A flat line on the ECG.
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How much time does each light line on a ECG paper mean?
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0.04 seconds.
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How much time does each dark line on a ECG paper mean?
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0.20 seconds.
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How much time does 15 large squares mean?
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3 seconds.
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How do you calculate the arterial heart rate?
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Use a 6 second strip, count the P waves and multiply by 10.
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How do you calculate the ventricular rate?
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Use a 6 second strip, count the QRS waves and multiply by 10.
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In what instance would you see a U wave on an ECG paper?
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When the potassium is decreased and the calcium is increased, and with dig toxicity.
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What is the PR interval?
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Time it takes to go from sinus node to AV node. (the beginning of P wave to beginnning of Q wave.
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What are some signs of sinus tachycardia?
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Fever, pain, hypoxemia, shock, hyperthyroidism, sudafed.
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What drug do you give for sinus tachycardia?
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Adenosine.
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What med is good for bradycardia?
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Atropine.
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What would indicate treating bradycardia with atropine?
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If the pt is symptomatic.
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What would indicate atrial fibrilation on a ECG paper?
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Non distinct P waves.
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What is the cause of atrial fibrilation?
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Decreased cardiac output.
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What is a cardioversion?
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A mini defibrilation that is synchronized.
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What does an atrial flutter look like on a ECG paper?
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Non distinct P waves that look like a saw tooth.
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What kind of pt would be suseptible to an atrial flutter?
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Someone with HTN or COPD.
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What med is used for atrial flutter?
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Amiodarone.
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What does premature ventricular contraction (PVC) look like on a ECG paper?
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There is a triplette.
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What med is given for PVC?
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Amiodarone.
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How does amiodarone help PVC?
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It cedreases irratibability in the venricles.
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What does ventricular tachycardia look like on a ECG paper?
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>30 seconds then sustained v-tach - no pulse.
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Is ventricular fibrillation a medical emergency?
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Yes.
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What is a heart block?
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It occurs between the atria and the ventricles. The impulse either cannot go through the AV node and the bundle of His or is just delayed.
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What is the time of the pr interval in a first degree heart block?
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>0.20 seconds.
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What is a 3rd degree heart block?
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A complete heart block.
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What causes a third degree heart block?
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MI, and open heart surgery.
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What is usually used to assist those in third degree heart block?
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A pace maker is placed.
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What is catheter ablation therapy?
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Radiofrequency energy burns areas of the conduction system that causes tachyarrhythmias.
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