12-Lead ECG basics.
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 | Leads II, III, and AvF.
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| The Lateral leads consist of which leads? | show 🗑
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| show | Leads V3 and V4.
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| The Septal leads consist of which leads? | show 🗑
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| ST-segment elevation of at least 2mm in any anatomically contiguous leads suggests what? | show 🗑
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| ST-segment depression or "T" wave inversion may be indicative of what? | show 🗑
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| Which leads are known as the precordial or chest leads? | show 🗑
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| Reciprocal ST-segment changes can be noted where? | show 🗑
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| show | When moved to the opposite side V4 now becomes V4R, and a rapid Right sided 12-Lead ECG may be performed.
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| show | Any QRS duration greater than 120mm constitutes a BBB.
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| show | Pericarditis.
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| show | 0 to 90 degrees. (all up)
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| A physiologic Left axis deviation? | show 🗑
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| show | -30 to -90 degrees. (up, down, down)
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| A Right axis deviation? | show 🗑
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| show | -90 to 180 degrees. (all down)
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| show | True, by moving the LL(red) lead to all the V-Lead (precordial) positions and switching to Lead III, you can capture the same views of the myocardium as a 12-Lead ECG!
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| Which leads are known as the axial or limb leads? | show 🗑
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| The heart consists of these coronary vessels? | show 🗑
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| show | Right axis deviation.
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| A pathological "Q" wave, must be greater than 25% of overall QRS depth, is usually indicative of what? | show 🗑
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