RT EGANS Repository, Module 17: Interpreting the Electrocardiogram
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | •Heart rate: between 60 and 100 beats/min•PR interval: 0.12–0.20 s•QRS complex: <0.12 s•T wave: upright•ST segment: flat•R to R interval: regular (varying less than 0.12 s between QRS complexes)
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| show | one abnormality—an elevated heart rate.•Heart rate: >100 beats/min•PR interval: 0.12–0.20 s•QRS complex: <0.12 s•T wave: upright•ST segment: flat•R to R interval: regular (varying less than 0.12 s between QRS complexes)
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| show | one abnormality—a decreased heart rate.•Heart rate: < 60 beats/min•PR interval: 0.12–0.20 s•QRS complex: <0.12 s•T wave: upright•ST segment: flat•R to R interval: regular (varying less than 0.12 s between QRS complexes)
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| Sinus Dysrhythmia | show 🗑
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| show | Anxiety, pain, fever, hypovolemia, hypoxemia; also side effect of bronchodilator medication
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| show | Hypothermia and abnormalities in SA node
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| Dyrhythmia - Sinus arrhythmia | show 🗑
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| show | •A normal QRS interval (<0.12 s) indicates pacing from the AV junction—a junctional ectopic beat.•A wide QRS interval (>0.12 s) indicates pacing from cells in the ventricles—a ventricular ectopic beat; ventricular beats normally produce slower heart rate
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| show | •Heart rate: usually between 60 and 100 beats/min•PR interval: >0.20 s, but constant•QRS complex: <0.12 s•T wave: upright•ST segment: flat•R to R interval: regular (varying less than 0.12 s between QRS complexes
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| Second-Degree Heart Block Type I | show 🗑
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| Second-Degree Heart Block Type II | show 🗑
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| Third-Degree Block | show 🗑
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| Causes of Heart Blocks - First-degree | show 🗑
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| Causes of Heart Blocks - Second-degree type I | show 🗑
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| Causes of Heart Blocks - Second-degree type I | show 🗑
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| show | Acute MI (more common with inferior and posterior wall MI), drug toxicity (digitalis)
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