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Adult Health II - NUR 253 > Test 2 > Flashcards

Flashcards in Test 2 Deck (188)
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1

What is pericarditis?

inflammation of the pericardial sac that causes a rubbing noise

2

What is the purpose of valves?

to prevent backflow

3

What creates heart sounds?

S1 is the closure of the AV valve
S2 is the closure of the semilunar valve

4

What causes a heart murmur?

a disruption in the flow of blood

5

What is stroke volume?

the amount of blood ejected per ventricle per beat

6

What is the cardiac output?

the amount of blood pumped by the ventricles into the pulmonary and systemic circulations in one minute

7

What is ejection fraction?

the percent of blood ejected from ventricles

8

What is the normal ejection fraction?

50-70%

9

What is the normal cardiac output?

4-8 L/min

10

What is preload?

the ability of ventricles to stretch and go back to normal

11

What is afterload?

the force needed to eject blood

12

What is contractility?

the ability of the heart muscle to shorten

13

What is another name for the Sinoatrial (SA) node?

the pacemaker of the heart

14

What is a blood pressure?

a reflection of cardiac output.
measure of pressure of blood flow through the arteries

15

What is the systolic pressure?

pressure that results from contraction of ventricles

16

What is the diastolic pressure?

pressure of the ventricle at rest

17

What is pulse pressure?

the difference between diastolic and systolic pressures

18

What is a normal pulse pressure?

50-100 mmHg

19

What are determinants of blood pressure?

pumping action of the heart
peripheral vascular resistance
blood volume
blood viscosity

20

What are non-modifiable risk factors for cardiovascular illnesses?

age, gender, family hx, race, and personal health hx

21

What are modifiable risk factors for cardiovascular illnesses?

smoking, sedentary lifestyle, hyperlipidemia, obesity, DM, HTN

22

What is mean arterial pressure (MAP)?

constant blood pressure you have

23

How do you calculate an MAP?

SBP + 2(DBP) / 3

24

What is an ideal mean arterial pressure?

>65mmHg

25

What three factors determine peripheral vascular resistance?

blood viscosity
length of vessel
diameter of vessel

26

What is primary hypertension?

increase in blood volume and peripheral vascular resistance

27

What is secondary hypertension?

hypertension caused by something else.

28

What are some causes of secondary hypertension?

kidney disease, coarctation of aorta, endocrine disorders, neurological disorders, drug use, pregnancy, hypothyroidism, or obstructive sleep apnea

29

What is prehypertension?

systolic of 121-139 or diastolic of 81-89
where you can intervene with diet, exercise, stress control, and stop progression to stage 1

30

What is stage 1 hypertension?

systolic 140-159
diastolic 90-99