'22 Leads Test
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| A. each separate view of the heartB. the standard limb leads "bipolar leads"C. represents the complete ventricular depolarization last (0.08-0.12 secs or 2-3 small sq) anything +/- means "abnormal"D. 4 limb leads (3 limb electrodes & 1 grounding electrode)
6 chest leads (V1-V6)
= 10 leads that create 12 waveformsE. standard "bipolar" leads (lead l, ll, lll)F. triangle formed from the R. A --> L. A --> L.LG. "bipolar lead" AKA bipolar bc they are composed of 2 electrodes; a neg. and pos. one; ECG records the difference in electrical potential btwn themH. - standard leads l, ll, lll produce POSITIVE deflections on the graph
- augmented lead aVR produces a negative deflection
- augmented lead aVL & aVF produces a POSITIVE deflectionI. 10 leadsJ. L. Foot (L. leg to the foot) ; positive deflection K. - chest leads/precordial leads V1-V6 provide a view of the heart from different anglesL. from the heart to the ____:
aVR - R. Arm
aVL - L. Arm
aVF - L. FootM. lead l, ll, lll & aVL, aVFN. lead l, ll, lllO. R. Arm ; negative deflectionP. [Lead] WHITE; Right armQ. on the R. leg R. T ; Unlike a single-channel ECG, the 3- and 6-channel ECG record multiple leads at once producing a 12-lead ECG in about 10 secsS. make sure that the leads are properly placed T. the electrical activity in 2 directions (<--->) |
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