Term
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Definition
| Right arm or shoulder (over the pectorals minor) |
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Term
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Definition
| Left arm or shoulder (over the pectorals minor) |
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Term
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Definition
| Right leg or right lower quadrant (serves as a ground for unipolar precordial leads) |
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Term
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Definition
| Left leg or left lower quadrant (serves as a ground for bipolar leads) |
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Term
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Definition
| 4th intercostal space right sternal border. |
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Term
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Definition
| 4th intercostal left sternal border |
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Term
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Definition
| 5th rib equidistant from V2 and V4 |
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Term
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Definition
| 5th intercostal mid-clavicular |
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Term
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Definition
| 5th intercostal anterior axillary |
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Term
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Definition
| 5th intercostal mid axillary |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| a combination of segments (isoelectric at lines) and waveforms. The duration of these intervals can tell us a lot about how electricity is moving in the heart. |
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Term
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Definition
| the duration (time) from the start of P to the start of Q (when visible otherwise the start of R). Normal duration is .12-.20 sec. |
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Term
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Definition
| the start of Q to the end of S and should be roughly 1:2 the duration of PR. Normal is .06-.10 |
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Term
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Definition
| beginning from the start of Q to the end of the T. Represents the full cycle of contraction and repolarization; this interval varies in conjunction with HR and will shorten in response to the bodies demand for cardiac output. Normal is 40% of the total duration of the cardiac cycle. |
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Term
| The six limb leads of the frontal plane |
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Definition
Inferior: Lead II Lead III and aVF
Left Lateral: Lead I Lead aVL and Lead aVR |
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Term
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Definition
| right arm negative and left arm positive at 0 degrees. |
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Term
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Definition
| Right arm negative and left leg positive at 60 degree. |
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Term
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Definition
| Left arm negative and left leg positive at 120 degrees. |
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Term
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Definition
| Left arm positive and other limbs negative at -30 degrees. |
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Term
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Definition
| Right arm positive and other limbs negative at -150 degrees. |
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Term
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Definition
| Legs negative and other limbs negative at +90 degrees. |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| Layout of the 12-Lead ECG |
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Definition
1. The standard limb leads I, II, and then III.
2. The augmented limb leads aVR, aVL, and aVF.
3. The precordial leads V1, V2, and V3.
4. The left lateral precordial leads V4, V5, and lastly V6. |
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Term
| What percentage does the QT interval make up of the cardiac cycle? |
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Definition
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Term
| PR interval is ______sec.? |
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Definition
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Term
| How many leads are bipolar? |
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Definition
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