Chapter 10: Shock Flashcards Preview

EMT Course > Chapter 10: Shock > Flashcards

Flashcards in Chapter 10: Shock Deck (65)
Loading flashcards...
1

shock = _____

hypoperfusion

2

shock means a state of collapse and failure of the ______ system that leads to ____

CV system that leads to inadequate circulation

3

in the ___ stages of shock, the body attempts to maintain homeostasis

early

4

as shock progresses _____ slows and eventually ceases

blood circulation

5

shock can occur because of medial or traumatic events like:
1.
2.
3.
4.

1. heart attack
2. severe allergic reaction
3. automobile crash
4. gunshot wound

6

_____ is the circulation of blood within an organ or tissue in adequate amounts to meet the cell's current needs

perfusion

7

list the two circuits in the body

systemic and pulmonic

8

the _____ circulation carries oxygen-rich blood from the LV through the body and back to the RA

systemic

9

____ is a passive process in which molecules move from an area with high conc of molecules to an area of lower conc

diffusion

10

three parts of the CV system, called the "perfusion triangle"

pump (heart)
set of pipes (bv and arteries)
blood

11

blood flow through the capillary beds is regulated by the _____, circular muscular walls that constrict and dilate

capillary sphincters

12

these sphincters are under control of the

ANS

13

perfusion requires more than just having a working CV system. it also requires adequate ____, _____, and ____

oxygen, nutrients, and waste removal

14

the _____ and _____ are triggered when the body senses that the pressure in the system is failing

ANS and hormones

15

shock can result from many conditions including;
1.
2.
3.
4.

1. bleeding
2. respiratory failure
3. acute allergic reactions
4. overwhelming infection

16

3 main causes of shock

1. pump failure
2. low fluid volume
3. poor vessel function

17

_____ is caused by inadequate function of the heart (pump failure)

cardiogenic shock

18

a major effect of cardiogenic schock is backup of blood in the lungs or ______

pulmonary edema

19

______ occurs when conditions that cause mechanical obstruction of the cardiac muscle also affect the pump function

obstructive shock

20

2 examples of obstructive shock

1. cardiac tamponade
2. tension pneumothorax

21

_____ is a collection of fluid between the peridcardial sac and the myocardium

cardiac tamponade

22

signs and symptoms of cardiac tamponade are known as

beck's triad (JVD, muffled heart sounds, and systolic and diastolic BP starting to merge)

23

____ is caused by damage to lung tissue

tension pneumothorax

24

a tension pneumothorax allows are normally held in the lung to escape into the

chest cavity (which applies pressure to the heart)

25

_____ results when there is a widespread dilation of small arterioles, venules, or both

distributive shock

26

4 types of distributive shock

1. septic shock
2. neurogenic shock
3. anaphylactic shock
4. psychogenic shock

27

___ occurs as a result of severe infections in which toxins are generated by the bacteria or by infected body tissues

septic shock

28

in septic shock the toxins damage the vessel walls causing ___cellular permeability. the vessel walls leak and are unable to contract well.

INC

29

____ is usually a result of injury to the part of the nervous system that controls the size and muscle tone of the blood vessels

neurogenic shock

30

in neurogenic shock the muscles in the walls of the blood vessels are cut off from the SNS and nerve impulses that cause them to contract. all vessels below the level of the spinal injury _____ causing blood to ___

dilate widely causing blood to pool