Chapter 21 - Anaphylactic Reactions Flashcards Preview

EMT - Basic - Prehostpital Emergency Care 10th Edition > Chapter 21 - Anaphylactic Reactions > Flashcards

Flashcards in Chapter 21 - Anaphylactic Reactions Deck (25):
1

a reactive release of chemical mediators that produce bronchoconstriction, vasodilation, capillary permeability, and increased mucus production leading to airway and resp compromise and hypoperfusion

anaphylactic reaction - anaphylaxis

2

a shock (hypoperfusion) state that results from dilated and leaking blood vessels related to severe allergic reaction

anaphylactic shock

3

the bodys defense mechanism against invasion by foreign substances

immune system

4

a foreign substance that enters the body and triggers an immune response

antigen

5

a substance (antigen) that enters the body by ingestion, injection, inhalation, or absorption and triggers an allergic reaction

allergen

6

production of antibodies by the immune system to fight off invasion by foreign substances

immune response

7

a misdirected and excessive response by the immune system to a foreign substance or an allergen.

allergic reaction

8

special proteins produced by the immune system that search out antigens and combine with and help to destroy them

antibodies

9

a state of altered reactivity to an antigen, or foreign substance, that causes allergic reactions to that substance

hypersensitivity

10

exposure to an allergen that results in hypersensitivity to that allergen

sensitization

11

the primary chemical mediator released from the mast cells in an anaphylactic reaction

histamine

12

a reaction to a foreign substance that resembles an anaphylactic reaction that may occur on first exposure to the substance, without immune system sensitization

anaphylactoid (non-IgE-mediated) reaction

13

the type of antibody that is produced specific to anaphylaxis is called _________

immunoglobin E - abbreviated as IgE

14

the life-threatening signs and symptoms seen in anaphylactic reactions are produced by _____, ______, and ______.

bronchoconstriction
increased capillary permeability
vasodilation

15

an antibody may enter the body by:
1
2
3
4

injection
ingestion
inhalation
contact (absorption)

16

most common causes of anaphylactic reactions are:

venom
food
pollen
meds
exercise
temp
latex

17

generalized feeling of weakness or discomfort

malaise

18

placement of a tube down the trachea to facilitate airflow into the trachea and lungs

endotracheal intubation

19

raised, red blotches associated with allergic and anaphylactic reactions

hives

20

S/S:
rhinitis (stuffy, itchy, runny nose)
tachycardia
pruritus (itching) that is localized or diffuse
faintness or light-headedness
warm, flushed skin (skin can appear pale)
agitation or anxiousness
urticaria (hives)
edema

anaphylaxis

21

the drug of choice for emergency treatment of a systemic allergic reaction to insect stings or bites, foods, drugs, and other antigens.

epinephrine

22

alpha 1

causes vessels to constrict

23

alpha 2

regulates amount of vasoconstriction

24

beta 1

increases HR
force of contraction
and speed of electrical impulses

25

beta 2

causes bronchiole smooth muscle dilation

Decks in EMT - Basic - Prehostpital Emergency Care 10th Edition Class (44):