Week 3 inflammation and fever Flashcards
The bodies defense mechanism that occurs in response to different stimuli is called what?
Inflammation
What is Inflammation?
The bodies defense mechanism in response to different stimuli
Is the Inflammation response specific or non-specific?
Non-specific
What does non-specific response mean?
Inflammation follows the same pattern, regardless of what caused it.
What is the purpose of Inflammation?
To contain or destroy microorganisms that invade of the body.
What does inflammation attempt to facilitate at the site of injury?
Repair
Swelling, pain, warmth and erythema are all signs of what?
Inflammation
What are signs of Inflammation?
Swelling, pain, warmth, and erythema
What are the 2 classifications of Inflammation?
Acute and Chronic
Systemic Lupus Erythematosus (SLE),
Rheumatoid arthritis (RA), and Seasonal allergies are all instances of what classification of Inflammation?
Chronic
True or False:
Chronic inflammation is associated with sudden injury/exposure
False
Acute inflammation is associated with sudden injury/exposure
Rheumatoid Arthritis is an example of what Inflammation classification?
Chronic
Histamines, leukotrienes, bradykinin, and prostaglandins are all examples of what in regard to inflammation?
They are Chemical Mediators
What do chemical mediators do?
They act as alarms to surrounding tissues
What causes immune cells to release Chemical Mediators?
Damaged tissues
What are Cytokines?
a.) Produced by macrophages, leukocytes, and dendritic cells; Mediate & Regulate Immune reactions.
b.) Released by Mast cells; Cause Vasodilation and smooth muscle contraction, swelling and itching
c.) Released by Mast cells; 20 proteins that combine to destroy an Antigen.
d.) Increase capillary permeability and attract WBCs to the site of Inflammation.
a.) Cytokines are made by macrophages, leukocytes, and dendritic cells; Mediate & Regulate Immune reactions.
What are Histamines?
a.) Released by Mast cells; 20 proteins that combine to destroy an Antigen.
b.) Released by Mast cells; Cause Vasodilation and smooth muscle contraction, swelling, and itching.
c.) Increase capillary permeability and attract WBCs to the site of Inflammation.
d.) Produced by macrophages, leukocytes, and dendritic cells; Mediate & Regulate Immune reactions.
b.) Histamines are released by Mast cells; Cause Vasodilation and smooth muscle contraction, swelling, and itching.
What is a Compliment?
a.) Increase capillary permeability and attract WBCs to the site of Inflammation.
b.) Produced by macrophages, leukocytes, and dendritic cells; Mediate & Regulate Immune reactions.
c.) Released by Mast cells; Cause Vasodilation and smooth muscle contraction, swelling, and itching.
d.) Released by Mast cells; 20 proteins that combine to destroy an Antigen.
d.) Compliments are released by Mast cells; 20 proteins that combine to destroy an Antigen.
What is a Prostaglandin?
a.) Increase capillary permeability and attract WBCs to the site of Inflammation.
b.) Produced by macrophages, leukocytes, and dendritic cells; Mediate & Regulate Immune reactions.
c.) Released by Mast cells; Cause Vasodilation and smooth muscle contraction, swelling, and itching.
d.) Released by Mast cells; 20 proteins that combine to destroy an Antigen.
a.) Prostaglandins increase capillary permeability and attract WBCs to the site of Inflammation
What molecules in the body are used to detect foreign agents and injury?
Mast Cells
What membranes do Mast cells exist under?
Epithelial membranes
How do Mast cells respond to injury and foreign invaders?
By releasing Histamines
What do the Histamines released by Mast cells do to nearby blood vessels?
Histamines dilate nearby blood vessels
By dilating nearby blood vessels, what effect do Histamines have on capillaries?
Histamines make capillaries more permeable by dilating blood vessels.
By making the capillaries more permeable, and by dilating blood vessels, what have Histamines allowed for?
The entry of Plasma, Phagocytes, and Compliment proteins into an area of infection to neutralize foreign agents.
Upon cellular injury, Mast cells release Histamines, Bradykinin, Compliments and Leukotrienes. These are all types of what?
Chemical Mediators
A rapid release of inflammatory mediators on a large scale throughout the body is called what?
Anaphylaxis
There are 2 Primary drug classes for non-specific inflammation. What are they?
-NSAIDs
-Corticosteroids
NSAIDS are indicated for:
a.) Mild to moderate pain, inflammation and fever
b.) Severe or disabling inflammation
c.) Anaphylaxis
a.) NSAIDs are for mild to moderate pain, inflammation and fever
Corticosteroids are indicated for:
a.) Mild to moderate pain, inflammation and fever
b.) Severe or disabling inflammation
c.) Anaphylaxis
b.) Corticosteroids are indicated for severe or disabling inflammation
what is corticosteroid use indicated for?
Severe or disabling inflammation.
What is a NSAID indicated for?
Mild to moderate pain, inflammation and fever
After short term use of a corticosteroid to control acute inflammation, what would be the type of drug that a patient would switch to for the continued control of inflammation and fever?
NSAIDs
Aspirin and Ibuprofen are examples of what type of drug?
NSAIDs
NSAIDs like Aspirin and Ibuprofen have what 3 effects?
Analgesic, Antipyretic and Anti-inflammatory effects
NSAIDs inhibit Prostaglandins. How?
They inhibit the production of COX enzymes.
What enzyme produces Prostaglandins?
COX-Enzymes
What kind of cells make up Prostaglandins?
Lipid cells
Cyclooxygenase is the unabbreviated word for what?
COX- Enzymes
COX-1 is:
a.) Serves protective function to all tissues; reduces acid secretion, promotes renal blood flow, promotes platelet aggregation
b.) Formed only after tissue injury & serves to promote inflammation
a.) COX-1 serves as a protective function to all tissues; reduces acid secretion, promotes renal blood flow, promotes platelet aggregation
COX-2 is formed after what?
Tissue injury
What does COX-2 promote?
Inflammation, and Capillary permeability
COX-1 promotes what 2 things?
Renal blood flow and platelet aggregation (clotting)
Which of the COX enzymes reduces acid secretion?
COX-1
1st generation NSAIDs block both COX-1 & 2. What are 2 examples of 1st generational NSAIDs?
Aspirin and Ibuprofen
Salicylates have a prolonged and potent effect on what blood cells?
Platelets
If you were to choose a drug class to have a potent and prolonged effect on a patient’s platelets, what would you use?
Salicylates
What class of NSAID drug prevents abnormal clot formation from occurring?
Salicylates
What is an example of a Salicylate drug?
Aspirin
A patient is experiencing symptoms including tinnitus (ringing in the ears), dizziness, headache, & excessive sweating from high doses of Salicylates. What is the name of the syndrome the patient is experiencing?
Salicylism
Which of these NSAIDs have a higher potential for gastric ulceration & bleeding?
-Aspirin
-Ibuprofen
Aspirin has a higher risk of gastric ulceration and bleeding.
What part of the body produces its own corticosteroids?
The Adrenal Cortex
Aldosterone and Cortisol, secreted by the Adrenal Cortex, are examples of what?
Naturally made corticosteroids.
Sometimes, the use of corticosteroids can override the Adrenal Cortex. How does the Adrenal Cortex respond?
By repressing its own secretions of Aldosterone and Cortisol
When a patient goes on corticosteroids, what is an expected response to their blood sugar levels?
Blood sugar will go up, leading to Hyperglycemia
A natural defense mechanism for neutralizing (killing) foreign organisms involving body temperature is called what?
A Fever.
What is a Fever?
A natural defense mechanism for neutralizing (killing) foreign organismsby incresing body temperature
What is an Antipyretic drug used for?
Treating a fever
What can prolonged, high Fevers lead to?
-Seizures
-Coma
-Delerium
-A breakdown of bodily tissues
What is an SSRI?
Selective Serotonin Reuptake Inhibitor
SSRIs can result in “Serotonin Syndrome”. What is Serotonin Syndrome?
A Fever resulting from SSRIs that cause changes in mental status and the cardiovascular system.
Why might a nurse instruct Asian, African American, or Middle Eastern patients to use caution when taking acetaminophen?
They may have a G6PD enzyme deficiency that causes hemolysis after taking acetaminophen.
Deficiency of what enzyme in certain ethnicities causes hemolysis after taking acetaminophen?
G6PD