Quiz 4 - EKG Prep Flashcards
Why do you want to avoid placing electrodes at sites with bony prominences, major muscle and fatty areas?
These thing swill impede the signal.
Why may you receive a moving baseline reading?
Bc the area where the electrode was placed may not have been dry, it could also be dirty (or loose) or both.
What causes a wandering baseline
Poor skin prep or breathing in some instances.
What is a somatic tremor?
When muscular mov’t is detected; i.e. exercise, shivering or even gum chewing.
*NOTE: A somatic tremor is aka “muscle action”
What causes an alternating current (AC) interference?
It is typically caused by an external source. power cords, lighting or electrical wires in the walls, a motor, ceiling, floor or cell phones. (Sometimes known as a 60-cycle interference)
Where do the RA and LA limb leads go?
Below the right clavicle, above the pec muscle mass and medial to anterior delt.
Where does the RL and LL limb leads go?
Between teh hip bone and bottom of ribs; lateral/frontal plane to belly button. Between midclavicular and anterior axillary lines.
Precordial leads V1 and V2 go where?
Between the intercostal space, between rib 4 and 5 and the sternal border.
Where does V3 go?
1/2 way between V2 and V4
Where is V4 placed?
In the 5th intercostal space (between rib 5 and 6) at the LEFT midclavicular line.
(You can also find it by following the BEGINNING curvature of the 5th intercostal space)
Where is the V5 electrode placed?
At the same LEVEL as V4, at the left anterior axillary line.
(You can also find it by following the curvature of the 5th intercostal space)
V6 - where do you place it?
V6 is placed at the same LEVEL as V$ and V5, but at the MIDaxillary line
(You can also find it by following the curvature of the 5th intercostal space)
