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11 Cards in this Set
- Front
- Back
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Lyme disease
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Can result in 3rd degree heart block.
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Half-standard ECG
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All voltages need to be doubled.
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High-to-low conduction rhythm
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P-wave upright/+ in II, III, avF.
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Right-to-left conduction rhythm
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P-wave upright/+ in I or aVL.
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Sinus rhythm
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High to low conduction + right to left.
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PR Interval
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Atrial activation thru AV nodal conduction.
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Normal PR interval time
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120-200 msec.
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PR interval bigger than 1 big box
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1st degree AV block.
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WPW Syndrome
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Short PR (<120ms) + delta wave + tachycardia.
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QRS interval
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Ventricular activation
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Normal QRS interval time
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<120 msec (3 small boxes)
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