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'22 Leads

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
show "bipolar lead" AKA bipolar bc they are composed of 2 electrodes; a neg. and pos. one; ECG records the difference in electrical potential btwn them  
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bipolar leads   show
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what does bipolar leads measure?   show
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show from the heart to the ____: aVR - R. Arm aVL - L. Arm aVF - L. Foot  
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augmented limb leads   show
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show "precordial leads"  
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precordial leads   show
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show - 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 deflection  
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what are leads?   show
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show the electrodes may be misplaced  
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chest leads and waveforms NOTE:   show
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show represents the complete atrial contraction last (0.12-.20 secs or 3-5 small sq) anything +/- means "abnormal"  
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QRS complex:   show
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show 4 limb leads (3 limb electrodes & 1 grounding electrode) 6 chest leads (V1-V6) = 10 leads that create 12 waveforms  
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how many leads in a 12 waveform paper?   show
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show R. Arm ; negative deflection  
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aVL is placed where and what type of deflection does it have?   show
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show L. Foot (L. leg to the foot) ; positive deflection  
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show triangle formed from the R. A --> L. A --> L.L  
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show the placement of the lead  
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which are the bipolar leads?   show
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show (+) R. Arm <---> L. Arm (-)  
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show (+) R. Arm <--> L. Leg (-)  
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show (-) L. Arm <--> L. Leg (+)  
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which leads form the Einthoven's Triangle?   show
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show are placed on the pts skins in specific locations that control electrical activity to the ECG - for single use - check for expiration date  
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if an aVR has a positive deflection, what should be done?   show
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show 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 secs  
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what are ECG leads?   show
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what are the first 3 leads, that uses 2 limb electrodes to record the heart's electrical activity?   show
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what are the 3 leads, that uses 1 limb electrode to record the heart's electrical activity?   show
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which leads produces a negative deflection?   show
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which leads produces a positive deflection?   show
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where is the 4th or "grounding lead" placed?   show
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what is the grounding lead used for?   show
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show [Lead] WHITE; Right arm  
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show [Lead] BLACK ; Left arm  
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show [Lead] GREEN ; Right leg  
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In a 12-lead, Color ____ is placed on ____   show
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show [V1] RED ; Right sternal border, 4th intercostal space  
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In a 12-lead, Color ____ is placed on ____   show
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show [V]3 GREEN; midway between V2-V4  
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In a 12-lead, Color ____ is placed on ____   show
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In a 12-lead, Color ____ is placed on ____   show
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In a 12-lead, Color ____ is placed on ____   show
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show  
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