Part I

Question 1

worst types of PVCs

Answer 1

1. frequent (>6/min)
2. multifocal PVC
3. early PVC
4. Patterns of PVC

Question 2

normal sinus rhythm rate

Answer 2

60-100

Question 3

sinus bradycardia rate

Answer 3

< 60

Question 4

sinus tachycardia rate

Answer 4

> 100

Question 5

bold line count down

Answer 5

300, 150, 100, 75, 60, 50, 43, 37

Question 6

lead I

Answer 6

lateral wall of LV

supplied by circumflex LCA

Question 7

lead II

Answer 7

inferior wall of LV

supplied by posterior descending branch of RCA

Question 8

lead III

Answer 8

inferior wall of LV

supplied by posterior descending branch of RCA

Question 9

aVR

Answer 9

base of heart, atria, great vessels

Question 10

aVF

Answer 10

inferior wall of LV

supplied y posterior descending branch of RCA

Question 11

aVL

Answer 11

lateral wall of LV

supplied by circumflex branch of LCA

Question 12

V1

Answer 12

inter ventricular septum, anterior LV, supplied by left anterior descending branch of LV

Question 13

V2

Answer 13

anterior LV

Question 14

V3

Answer 14

anterior LV

Question 15

V4

Answer 15

lateral LV

Question 16

v5

Answer 16

lateral LV

Question 17

v6

Answer 17

lateral LV

Question 18

axis: +/+

Answer 18

normal

Question 19

Axis: +/-

Answer 19

left axis deviation

Question 20

axis: -/+

Answer 20

right axis deviation

Question 21

Axis: -/-

Answer 21

extreme axis deviation

Question 22

how to ID atrial enlargement

Answer 22

leads II, V1

biphase in V1 indicates one or both

Question 23

Right atrial enlargement?

Answer 23

P wave taller than 2.5 mm

taller initial component of biphasic P wave

Question 24

left atrial enlargement

Answer 24

V1 > 1mm drop below isoelectric line or prolongation

Question 25

RBBB

Answer 25

V1 and V2 rabbit ears broad S waves

Question 26

LBBB

Answer 26

V5 and V6 flattens or notched R waves bread S in V1 and V2

Question 27

hemlocks

Answer 27

axis deviation, no QRS prolongation

Question 28

indicators of MI: ischemia, injury, infarction

Answer 28

peaked T waves T wave inversion ST depression ST elevation pathologic Q wives

Question 29

sinus dysrhythmia abnormality

Answer 29

normal sinus rhythm + regularly irregular

Question 30

base line rhythm with sinus arrest

Answer 30

not counted in rate, irregular where there is a pause

Question 31

atrial flutter

Answer 31

controlled (<100) /uncontrolled (>100) ventricular response P wave: no p wave, "saw tooth" f wave

Question 32

atrial fibrillation

Answer 32

controlled (<100) /uncontrolled (>100) ventricular response MC, small re-entry circuits may result in blood clots, holiday heart P wave 0 no consistent p wave, stays on the isoelectric point