EKG interpretation

Question 1

At what age are EKG screenings done

Answer 1

65 and over

Question 2

Which coronary artery supplies blood to majority of the heart

Answer 2

RCA

Question 3

Which leads are unipolar

Answer 3

augmented

Question 4

When you look at an EKG strip, which leads are your view point

Answer 4

Positive leads

Question 5

What congenital disease is known for a short PR interval

Answer 5

WPW

Question 6

What is indicative on EKG if someone has an AV block

Answer 6

Long PR interval

Question 7

What congenital issue can cause prolonged QT

Answer 7

K+ channelopathy

Question 8

What are the biggest things to notice on lead 2

Answer 8

Rate
Rhythm
Intervals

Question 9

How do you calculate the heart rate on a rhythm strip

Answer 9

QRS complexes seen
multiplied by 10

Question 10

How to calculate the heart hate on a standard 12 lead

Answer 10

QRS complexes seen
multiplied by 6

Question 11

What is the frequency of the AV node

Answer 11

45-50 bpm

Question 12

Which leads are unipolar

Answer 12

V leads

Question 13

How many seconds is 1 big square on an ecg

Answer 13

.2 seconds

Question 14

How many seconds is 1 small square

Answer 14

.04 seconds

Question 15

How long is a normal QRS duration

Answer 15

.06-.10 seconds

Question 16

When will you see a U wave

Answer 16

Hypokalemia
medication toxicity

Question 17

How long is each lead in seconds

Answer 17

2.5

Question 18

Where is V1 located

Answer 18

R side sternum, 4th intercostal space

Question 19

Where is V2 located

Answer 19

L side sternum, 4th intercostal space

Question 20

Where is V3 located

Answer 20

between V2 and V4

Question 21

Where is V4 located

Answer 21

L. mid clavicular, 5th intercostal space

Question 22

Where is V5 located

Answer 22

L anterior axillary 5th intercostal space

Question 23

Where is V6 located

Answer 23

L mid axillary, 5th intercostal space

Question 24

What is the electrical axis

Answer 24

The average direction of all waves of depolarization in the heart at one time

Question 25

Where does the electrical impulse in the ventricle start

Answer 25

Left side of the septum

Question 26

What is the right axis deviation

Answer 26

+90 to 180 degrees * from COPD / WPW / pulm. embolism

Question 27

What is Left axis deviation

Answer 27

-30 to -90 degrees * from pregnancy / hyperkalemia / left sided hypertrophy

Question 28

What is extreme axis deviation

Answer 28

-90 to -150 *generally misplaced leads / Vtach / poor coronary artery perfusion

Question 29

How do you determine axis deviation

Answer 29

By looking at lead 1 and AVF

Question 30

What does normal axis deviation look like

Answer 30

Both Avi and lead 1 are going up

Question 31

What does Right axis deviation look like

Answer 31

Lead 1 is going down AVF is going up

Question 32

What does left axis deviation look like

Answer 32

Lead 1 is going up and AVF is going down

Question 33

What does no man's land axis deviation look like

Answer 33

both lead 1 and AVF is going down

Question 34

What is the QRS duration of an incomplete BBB

Answer 34

.10-.12

Question 35

What is a bundle branch block

Answer 35

delay or blockage of the ventricular conduction system

Question 36

During a BBB, where does the electrical impulse go

Answer 36

impulse will travel across the cardiac myocytes instead of the nodal pathway

Question 37

when do you see a "saddle" on an EKG

Answer 37

Left atrial enlargement

Question 38

What occurs on an EKG with ventricular hypertrophy

Answer 38

there will be an increase in amplitude and often will have ST depression

Question 39

When is ventricular hypertrophy normal

Answer 39

Thin Young adults Athletes

Question 40

What is the most common cause of LVH

Answer 40

HTN *can also be caused by -aortic stenosis -aortic insufficiency -hypertrophic cardiomyopathy

Question 41

What is the sokolov-lyon criteria

Answer 41

Add the S wave in V1 plus the R wave in V5 or V6 (whichever is taller). If the sum is greater than 35 mm, LVH is present

Question 42

f there is ST depression combined with T wave changes, what is it indicative of

Answer 42

Full thickness ischemia

Question 43

If there is widespread ST depression without any T wave changes on an EKG, what does it mean

Answer 43

there is diffuse subendocardial ischemia

Question 44

What ST segment changes are indicative of a ischemia

Answer 44

Downsloping & horizontal

Question 45

What is Sgarbossa criteria used for

Answer 45

used in the diagnosis of an acute myocardial infarction when a left bundle branch block is present.

Question 46

What is Brugada syndrome

Answer 46

Sodium channelopathy

Question 47

Who does brugada syndrome occur in most frequently

Answer 47

Males *most asians

Question 48

What are the EKG findings in Brugada syndrome

Answer 48

ST elevation >2mm in V1-V3 followed by a negative T wave Must meet clinical criteria

Question 49

What is the clinical criteria for brugada syndrome

Answer 49

Family hx of sudden cardiac death <45 years old Hx of syncope Nocturnal agonal respiration

Question 50

What is the treatment of Brugada syndrome

Answer 50

Internal Pacer

Question 51

What will an EKG look like in someone who has pericarditis

Answer 51

ST depression w/ PR elevation in lead aVR

Question 52

When is an Osborn wave seen

Answer 52

Hypothermia