First Aid: CV

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created 7 years ago by jgaversa5
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updated 7 years ago by jgaversa5
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1

what supplies the SA and AV node in the majority of cases

RCA

2

how often does the RCA supply the inferior portion of the LV via the posterior descending artery

80%

3

what does it mean if the RCA is supplying the inferior poriton of the lV

it is DOMINANT

4

how often does the PD arise from the Cx

20%

5

what supplies the posterior LV

Cx

6

waht supplies the apzex and angerior IV septum

LAD

7

what supplies the RV

acute marginal artery

8

what artery does coronary artery occlusion most often occur in

LAD

9

when do the coronary arteries fill

diastole

10

what is the most inferior portion of the heart

LA

11

what can LA enlargement cause

deysphagia or hoarseness

12

what is compressed in LA enlargement to cause dysphagia

esophageal nerve

13

what is compressed in LA enlargement in hoarseness

recurrent laryngeal nerve

14

what is the recurrent layrngeal nerve a branch of

vagus

15

how does CO increase in exercise primarily at first

HR increase

16

what will happen to diastolic filling of HR is too high

diastolic filling is incomplete and CO decrases

17

when is an example of a time when HR is too high to meet diastolic filling and thus CO needs

ventricular tachycardia

18

how is CO maintained in the early stages of exercise

SV

19

how is CO maintained in the later stages of exercise

HR

20

how would you quickly calculate MAP

(DBP)(2/3)+(SBP)(1/3)

21

what factors affect SV

CC
AL
PL

22

relative to CC, AL, and PL, what makes SV increase

increase PL and CC
decrease AL

23

do this stuff at some ponit

...

24

skip to SOUNDS in cardiac cycle on page 283

...

25

what is S1 due to

M and T closure

26

where is S1 loudest

mitral area

27

what is S2

A and P closure

28

where is S2 loudest

LSB

29

when is S3

early diastole at rapid ventricular filling phase

30

what is S3 associated with

increased filling P (MR, CHF)

31

who is S3 more common in pathologically

people with dilated ventricles

32

who is S3 normal in

pregnant women and children

33

what is S4 known as and when is it

atrial kick
late diastole

34

what is S4 associated with

high atrial pressure due to LVH (STIFF LV WALL)

35

what is the a wave of jvp

atrial contraction

36

what is the c wave of jvp

RV contraction (closed TC valve bulging into atrium)

37

what ist he v wave of jvp

increased RA pressure due to filling against closed tricuspid valve

38

what is the x descent of jvp

atrial relaxation and downward displacement of closed TCV during ventricular contraction

39

what is the y descent in jvp

blood flows from RA to RV

40

what is the S2 split

aortic valve closes before pulmonic

41

what increases the S2 split

inspriation

42

what is wisde splitting associated with

pulmonic stenosis or RBBB

43

what is fixed splitting assd with

ASD

44

what is paradoxical splitting assd with

aortic stenosis or LBBB