ch 21 Flashcards
(41 cards)
What is an allergic reaction
An exaggerated immune response to a substance
What is an allergen
A substance that causes an allergic reaction
What is anaphylaxis
A severe reaction to an allergen that has entered the body. the immune system releases histamines which can damage body systems
What are common causes of anaphylaxis
Foods insect stings medications latex
What are the two most common signs of anaphylaxis
Urticaria (hives) and airway swelling
What are respiratory symptoms of anaphylaxis
Wheezing stridor dyspnea tightness in chest or throat
What are cardiovascular symptoms of anaphylaxis
Hypotension weak pulse dizziness syncope
What are skin signs of an allergic reaction
Flushed skin itching hives (urticaria) swelling (angioedema)
What gastrointestinal symptoms can occur with anaphylaxis
Nausea vomiting diarrhea abdominal pain
How quickly can anaphylaxis occur
Within seconds to minutes of exposure
What is the treatment for anaphylaxis
Administer epinephrine provide oxygen and rapid transport
What is the preferred route for epinephrine administration in anaphylaxis
Intramuscular (IM) injection
What is the adult dose of epinephrine via auto-injector
0.3 mg IM
What is the pediatric dose of epinephrine via auto-injector
0.15 mg IM
Where is epinephrine administered
Lateral thigh (vastus lateralis muscle)
What does epinephrine do
Constricts blood vessels relaxes airway muscles increases heart rate
When should you assist with epinephrine administration
When the patient has a prescription and meets criteria
What should you do after giving epinephrine
Reassess airway breathing circulation and prepare for transport
What is the priority if the patient is not breathing or has no pulse
Begin CPR and follow BLS protocols
What should you ask in SAMPLE history for allergy patients
Known allergies exposure prior reactions epinephrine use
What is the difference between mild and severe allergic reactions
Mild reactions are localized while severe involve respiratory or circulatory compromise
A 24-year-old woman was stung by a bee and now has hives wheezing and low blood pressure
Anaphylaxis administer epinephrine and transport rapidly
A child ate a peanut butter cookie and now has facial swelling difficulty breathing and is vomiting
Anaphylaxis administer pediatric epinephrine auto-injector and provide oxygen
A man with a known shellfish allergy eats shrimp and develops hives but has no trouble breathing or blood pressure issues
Mild allergic reaction monitor and transport if needed no epinephrine unless it progresses