EKG Interpretation Lectures

Question 1

paced rhythm

Answer 1

can be atrial or ventricular

see a sharp spike in EKG

Question 2

left BBB

Answer 2

cannot determine ischemia/infarction

Question 3

paradoxical split S2

Answer 3

with bundle branch block

-ventricles are contracting out of synchrony

Question 4

hyperkalemia

Answer 4

peaked T waves in majority of leads

Question 5

T wave inversion

Answer 5

reciprocal changes - will substantiate infarction

Question 6

interval

Answer 6

include wave

Question 7

segment

Answer 7

between wave

Question 8

atrial rhythm

Answer 8

upright P wave, normal QRS

Question 9

junctional rhythm

Answer 9

absent or inverted P wave, normal QRS

Question 10

ventricular rhythm

Answer 10

no P waves, wide QRS

Question 11

escape beats

Answer 11

refractory periods

Question 12

premature beats

Answer 12

irritable foci

reentry

Question 13

wolf parkinson white

Answer 13

delta waves

-accessory conduction bundle of kent

Question 14

atrial flutter

Answer 14

single atrial foci with reentry

-sawtooth pattern

Question 15

wandering pacemaker

Answer 15

irregular ventricular rhythm

• multifocal atrial rhythm
• P’ varied

Question 16

irregularly irregular rhythm

Answer 16

atrial fib

Question 17

first degree block

Answer 17

PR longer than 0.2s

Question 18

wenckebach

Answer 18

type I second degree AV block

-PR progressively longer, then dropped beat

Question 19

mobitz

Answer 19

type II second degree AV block
-wide QRS and failure of AV conduction in fixed ratio/pattern

• multiple P waves that go before QRS is conducted
  2: 1, 3:1, 4:1

Question 20

third degree AV block

Answer 20

A/V dissociation

P wave and QRS each have own rate

Question 21

ventricular tachycardia

Answer 21

usually reentry

Question 22

prolonged QT

Answer 22

sets up torsades

-QT interval larger than 2 big boxes (0.4s)

Question 23

right bundle branch block

Answer 23

QRS wide in V1 and V2

Question 24

left bundle branch block

Answer 24

QRS wide in V5 and V6

Question 25

biphasic P wave in lead V1

Answer 25

atrial enlargement - positive right - negative left

Question 26

p-pulmonale

Answer 26

greater than 2.5mm amplitude of P wave in II, III, AVF | -indicate right atrial hypertrophy

Question 27

abnormal large R wave in V1

Answer 27

right ventricular hypertrophy

Question 28

left ventricular hypertrophy

Answer 28

V1 and V5 sum > 35mm also see inverted/asymmetric T waves with strain pattern (humped ST)

Question 29

bifascicular block

Answer 29

left bundle 0 either anterior fascicle or posterior fascicle -and RBBB

Question 30

LBB anterior fascicle block

Answer 30

LAD

Question 31

LBB posterior fascicle block

Answer 31

RAD

Question 32

necrosis

Answer 32

Q waves | -old injury

Question 33

acute injury to myocardium

Answer 33

ST elevation - transmural infarction

Question 34

symmetrical inversion of T waves

Answer 34

ischemia

Question 35

ST segment depression

Answer 35

subendo infarction angina stress test

Question 36

MI with LBBB

Answer 36

EKG doesn't work anymore

Question 37

inferior MI

Answer 37

II, III, AVF

Question 38

anterior MI

Answer 38

V1-4

Question 39

lateral MI

Answer 39

I, AVL, V5-5

Question 40

posterior MI

Answer 40

V1,2 - tall R wave and ST depression

Question 41

firemans hat

Answer 41

ST elevation

Question 42

posterolateral MI

Answer 42

circumflex artery | -with anterior reciprocal changes

Question 43

hyperkalemia

Answer 43

flat, wide P waves wide QRS peaked T waves

Question 44

hypokalemia

Answer 44

flat T waves | U waves

Question 45

hypercalcemia

Answer 45

short QT interval | wide T wave

Question 46

hypocalcemia

Answer 46

prolonged QT interval | -flat T waves

Question 47

hypothermia

Answer 47

sinus bradycardia - long PR interval - wide QRS - long QT interval - osborn wave

Question 48

osborn wave

Answer 48

extra deflection at end of QRS - with hypothermia

Question 49

pericarditis

Answer 49

ST elevation flat with T wave off baseline - all leads*** - with PR segment depression

Question 50

pericardial effusion

Answer 50

everything is muffled

Question 51

paced rhythm

Answer 51

sharp depolarizations -can be atrial, ventricular, or AV sequential cannot interpret anything beyond this

Question 52

brugada syndrome

Answer 52

RBBB with ST elevation V1-3 looks like QRS and T are merging