10 Flashcards

1
Q

What does EKG measure/record

A

Heart’s electrical activity

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2
Q

P wave

A

Arterial depolarization (contraction)

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3
Q

QRS complex

A

Ventricular depolarization (contraction)

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4
Q

T wave

A

Repolarization of ventricales (relaxation)

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5
Q

12 lead EKG chest leads

A

V1-V6

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6
Q

12 lead EKG limb electrodes

A

Arms (R/L) and legs (R/L)

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7
Q

Location of ground wire in 12 lead EKG

A

R leg

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8
Q

V1 location

A

4th intercostal space

R of sternum

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9
Q

Location of V2

A

4th intercostal space

L of sternum

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10
Q

Location of V4

A

5th intercostal space

Midclavicular

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11
Q

Location of V6

A

5th intercostal space

Mid axillary line

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12
Q

Location of V3

A

Halfway between V2 and V4

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13
Q

Location of V5

A

Halfway between V4 and V6

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14
Q

Measurement of voltage is on the

A

Vertical axis

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15
Q

Measurement of time is on the

A

Horizontal axis

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16
Q

Normal route of electrical conduction

A

SA node -> interarterial path -> AV node -> bundle of His -> purkinje fibers

17
Q

Normal pacemaker of heart and rate

A

SA node 60 - 100 bpm

18
Q

System of backup pacemakers and their rate

A

Junctional tissue (surrounds AV): 40-60 BPM
Bundle Branch Tissue: 40-60 bpm
Ventricular tissue: 20-40 bpm

19
Q

QRS interval normal width of duration

A

0.36-0.44

20
Q

PR Interval width of duration

A

0.12 - 0.2

21
Q

Acute hypoxia rhythm

A

Sinus tachycardia

22
Q

Life threatening rhythms that require CPR

A

V tach w/out pulse
V fib (coarse and fine)
PEA (NOT SHOCKABLE)
Asystole (NOT SHOCKABLE)

23
Q

Cardiac ischemia ekg identifier

A

ST depression

24
Q

Determine rate on ekg

A

Counted beats x 10

25
Q

Holter monitoring

A

Pt wears constantly, tracks rhythm throughout day for abdnormalities

26
Q

The ST segment is where what occurs

A

Coronary artery reperfusion