Intro EKG

Question 1

V1 and V2 shows?

Answer 1

Septal wall MI’s

Question 2

Describe each layer of the heart

Answer 2

Endocardium
Myocardium
Visceral Pericardium
(Pericardial space)
Parietal Pericardium
Pleura- 2 layers with pleura cavity between

Question 3

Properties of cardiac cell (6)

ACCERR

Answer 3

Automaticity- Initiates Impulse
Conductivity- Receive and Conduct
Contractility- Shortening/Contracting
Excitability- Responds to Outside Stimuli
Rhythmicity- Regularity of Impulses
Refractoriness- Period in which cell not responsive

Question 4

atp is made in?

Answer 4

Mitochondria

Question 5

Intercalated Disc outer protective layer

Answer 5

Sarcolemma

Question 6

Sarcoplasmic reticulum

Answer 6

Calcium is stored inside

Question 7

T tubules of intercalated disc

Answer 7

?

Question 8

Myofibrils of intercalated disc

Answer 8

Functioning active contracting fiber

Question 9

2 most common valve problems

Answer 9

regurge and prolapse

Question 10

Right coronary artery

Answer 10

15-20%

Question 11

Circumflex

Answer 11

40%

Question 12

Left coronary artery

Answer 12

Most blood circulating

Question 13

Coronary arteries

Answer 13

Circulate 200-250cc’s per minute

Question 14

Where does coronary blood dump

Answer 14

Great cardiac vein

Question 15

Collateral

Answer 15

Anastanomes (sp?)

Question 16

Location of chemoreceptors

Answer 16

Medulla and aortic arch

Question 17

PH of IV bag

Answer 17

PH=5.5

could produce hyperchloremic acidosis

Question 18

Parasympathetic heart control

Answer 18

Atria

Question 19

Sympathetic heart control

Answer 19

Atria and ventricles

Question 20

Normal stroke volume

Answer 20

60-100

Question 21

Mean arterial pressure

Answer 21

Pressure needed to perfuse the coronary arteries (60-70)

Question 22

Ejection fraction

Answer 22

55-70%

Question 23

Limb leads are?

Answer 23

bipolar- positive and negative

Question 24

Augmented

Answer 24

AVR, AVL, AVF

Question 25

V=

Answer 25

Unipolar

Question 26

Precodial leads

Answer 26

V-leads

Question 27

EKG baseline

Answer 27

isoelectric line

Question 28

enlarged P wave

Answer 28

>.11 = enlarged atria

Question 29

Types of P waves

Answer 29

1. notched 2. Inverted- from AV junction 3. upright/peaked atrial enlargement 4. diphasic

Question 30

Normal PRI

Answer 30

.12-.2 | .2 "prolonged"

Question 31

Normal QRS

Answer 31

.06 to .10

Question 32

q wave >.04 or > 25% height of R wave =

Answer 32

infarct or dead tissue

Question 33

Ischemia

Answer 33

ST depression

Question 34

Injury

Answer 34

ST elevation

Question 35

QT interval

Answer 35

.36-.44

Question 36

Look at EKG?

Answer 36

``` Rate Rhythm Regularity P Waves PRI QRS Wave T Waves ```

Question 37

Indications for monitoring

Answer 37

``` Chest pain Abdominal pain in cardiac age patient Burns Trauma Near drowning Or any patient you feel needs a monitor SOB Syncope Irregular pulse Altered LOC Shock CPR ```

Question 38

PRI

Answer 38

.12-.2

Question 39

QRS

Answer 39

.06-.12