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20 terms

Chapter 22 - Allergic Reaction

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Allergen
Something that causes an allergic reaction.
Allergic Reaction
An exaggerated immune response.
Anaphylaxis
A severe or life-threatening allergic reaction in which the blood vessels dilate, causing a drop in blood pressure, and the tissues lining the respiratory system swell, interfering with the airway.
Anaphylactic Shock
Another name for Anaphylaxsis.
Auto-Injector
A syringe preloaded with medication that has a spring-loaded device that pushes the needle through the skin when the tip of the device is pressed firmly against the body.
Epinephrine
A hormone produced by the body. As a medication, it constricts blood vessels and dilates respiratory passages and is used to relieve severe allergic reactions.
Hives
Red, itchy, possibly raises blotches on the skin often result from allergic reactions.
dilates blood vessels, lowers blood pressure, and tissue swelling
What does anaphylaxsis do to a patient's blood vessels, blood pressure, and tissues?
Insects
Foods
Plants
Medications
Name 4 things common causes of allergic reactions.
An allergic reaction can cause an airway obstruction
Why can allergic reactions be dangerous?
forms antibodies
The first time a person is exposed to an allergen, the person's immune system does this.
difficulty breathing, massive swelling, and dilation of blood vessels
The second time a person is exposed to an allergen, the person's body might does this.
Because peanuts are legumes and not nuts.
Why is it possible to be allergic to peanuts and not to walnuts or almonds?
rapid breathing, cough, and stridor
Respiratory signs of anaphylactic shock can include __________, _____, and _____.
hypoperfusion/shock and respiratory distress
For a patient to be considered to be having a severe allergic reaction, the patient has to have __________ and __________.
reassess the patient after 2 minutes
What should the EMT do after he assists or administers epinephrine?
lateral mid-thigh
The recommended location for injection with the epinephrine auto-injector is the __________.
child size (children less than 66 pounds) 0.15mg

adult size 0.3mg
Epinephrine auto-injectors come in two sizes. What are the two sizes and how many mg are each size?
outgrow the allergies
Infants and children who have anaphylactic reactions __________ as they mature.
The allergic reaction has localized swelling.
What is the difference between an anaphylactic reaction and an allergic reaction?