Week 3 EKG Lead Placement Flashcards

1
Q

what does an EKG do?

A

provides info about electrical system of the heart from 12 different views using 10 electrodes

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2
Q

what node is responsible for the automatic beating of the heart

A

SA node

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3
Q

what are indication for EKG? 4

A

diagnose abnormal conduction, arrythmias, pre-op assesments, abnormalities resulting from genetic factors

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4
Q

what are some contraindications to performing an EKG? 2

A

severe trauma to chest, uncooperative patient

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5
Q

what are the complications to doing and EKG?

A

none

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6
Q

to what extent should a patient be clothed for an EKG?

A

removed clothing from waste up

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7
Q

what is the standard patient position?

A

supine(face up on back)

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8
Q

what is the max angle the head can be for EKG

A

45 deg

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9
Q

what happens if a patient cannot lie flat w/ head under 45 deg?

A

document altered EKG position (this can impact tracing)

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10
Q

what step must you do before placing leads and after positioning the patient?

A

skin prep (gives best electrical conduction)

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11
Q

what is involved in skin prep?

A

de-fat skin with alcohol wipe and then abrade skin with gauze pad

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12
Q

if skin is oily what do you do before alcohol and gauze?

A

wash with soap

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13
Q

what if the chest is hairy?q

A

separate hair or clip them

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14
Q

if skin is diaphoretic (sweaty) what steps do you do before alcohol wipe and gauze pad to clean it?

A

rub with gauze pad to dry

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15
Q

to place chest electrodes you will have to ____ and use ___

A

palpate and use landmarks

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16
Q

what if electrodes cannot be placed accurately?

A

clearly document the actual location of the electrode

17
Q

where does electrode V1 go?

A

4th intercostal space, right sternal border

18
Q

V2?

A

4th ICS, left sternal border

19
Q

V3?

A

equadistant between V2 and V4

20
Q

V4?

A

5th ICS at midclavicular line

21
Q

V5?

A

horizontal to V4 at the anterior axillary line

22
Q

V6?

A

horizontal to V4 at the midaxillary line

23
Q

limb electrodes should be placed…

A

on fleshy areas of wrists and ankles avoiding bony prominence, on the same spot on each limb

24
Q

what are the three main problems in a EKG?

A

electrical interference, wandering baseline, muscle tremor

25
Q

how do you troubleshoot electrical interference?

A

alter electrical activity of the room

26
Q

what is a wandering baseline?

A

wave form moves up and down over course of tracing

27
Q

what casues wandering baseline?

A

poor lead connection

28
Q

what does a muscle tremor look like on an EKG?

A

lines close together and spiking. not as long as the electical interference

29
Q

how do you fix muscle tremors?

A

quiet the movements of the patient

30
Q

before removing electrodes what do you do?

A

take recording to physician

31
Q

electrode vs lead

A

electrode: sticky part
lead: alligator clips