Module 9

Question 1

Preload

Answer 1

The volume of fluid remaining in the right ventricle
End of the diastolic pressure
“Stretch”

Question 2

Afterload

Answer 2

Resistance left ventricle must over come to circulate blood
Heart has to overcome to edjuct blood
The squeeze
Peripheral vascular resistance

Question 3

1/3
2/3
Systolic and diastolic ?

Answer 3

1/3 systolic
2/3 diastolic

Question 4

Stroke volume

Answer 4

Is the amount of blood pumped with each contraction of the heart
Dependent on preload and afterload

Question 5

Heart rate =

Answer 5

Is the number of heart contractions per minute?

Question 6

Cardiac output

Answer 6

Is the amount of fluid pump by the heart each minute

Question 7

Cardiac output formula

Answer 7

Co = sv x hr

Question 8

Automaticity

Answer 8

Generates its own electrical impulses, without stimulation from nerves
Pacemaker

Question 9

Intercalated discs

Answer 9

Discs that are responsible for automaticity in the heart

Question 10

Excitability

Answer 10

Ability to respond to an electrical impulse

Question 11

Conductivity

Answer 11

The ability to conduct excation through the cardiac muscle

Question 12

Contractiliity

Answer 12

The ability to contract in response to stimulation

Question 13

How blood flows in the heart

Answer 13

Question 14

The dominant pacemaker

Answer 14

Sa node

Question 15

Sa node rate

Answer 15

60-100

Question 16

Av node rate

Answer 16

60-80

Question 17

Branches of the av node rate

Answer 17

40-60

Question 18

Purknje fibers rate

Answer 18

20-50

Question 19

Which side of the purknje fibers have more branches

Answer 19

Left

Question 20

Electrical impulses spread from the SA node through the ?

Answer 20

Left and right atrial

Question 21

Electrical impulses spread from the bundle throughout the ?

Answer 21

Left and right ventricle

Question 22

What transmits from the SA node signal from the atrium to the ventricles

Answer 22

Av node

Question 23

What lead do we use

Answer 23

2

Question 24

Answer 24

Keep going :)

Question 25

Layers of the heart

Answer 25

Question 26

P =

Answer 26

Artial depolarization (Contraction )

Question 27

QRS =

Answer 27

Ventricular depolarization Contraction

Question 28

ST=

Answer 28

Beginning of ventricle repolarization Relaxation

Question 29

T=

Answer 29

Ventricular repolarization

Question 30

Answer 30

:)

Question 31

Absolute refractory. Period.

Answer 31

The neuron can not fire another action potential

Question 32

Relative refractory. Period.

Answer 32

Occurs after absolute refractory period and it’s possible for the neuron to fire another action potential

Question 33

White is always -/+ Red is always -/+ Black is always -/+

Answer 33

White + Red - Black both

Question 34

Order of leads

Answer 34

White is right Smoke over fire Grass under white clouds

Question 35

Lead triangle

Answer 35

Question 36

Horizontal ecg strip

Answer 36

Time

Question 37

Vertical = Ecg strip

Answer 37

Voltage

Question 38

Paper moves at

Answer 38

25mm/sec

Question 39

Millivot =

Answer 39

2 large boxes

Question 40

Each small square = Each large square =

Answer 40

1mm/0.04 secs 5mm /0.20 secs

Question 41

Small strip = 3 small strips =

Answer 41

3 secs 6secs

Question 42

P-R should be less than

Answer 42

0.20 seconds One big box Or five small boxes

Question 43

QRS should be less than

Answer 43

0.12 seconds. What are three small boxes

Question 44

Narrow qrs =

Answer 44

Arterial

Question 45

Wide qrs =

Answer 45

Ventricular

Question 46

300 method

Answer 46

Medium accurate Must be regular Measure R to R big boxes 300 150 100 75 60 50 43 37

Question 47

Six second method

Answer 47

Least effective Can be used for both Count the number of our waves in six seconds times by 10

Question 48

1500 method

Answer 48

Has to be regular Count the number of small boxes are the R to R Divided by 1500 Most accurate

Question 49

Cell at rest equals

Answer 49

Inside is more negative Resting cell membrain potential

Question 50

Depolarization

Answer 50

Stimulatea NA+ rush into the cell Inside becomes less negative Action potential

Question 51

Repolarization

Answer 51

Sodium potassium pump

Question 52

Sodium potassium pump

Answer 52

Question 53

Depolarization and repolarization Chart

Answer 53

Question 54

Steps to electrical conduction

Answer 54

Question 55

Shockable rhythms

Answer 55

Pulseless v tac V fib Torsades de pointes