Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Pharm-Antihistamines

Antihistamines

QuestionAnswer
Antihistamines inhibit: Histamines
What is the major usage of antihistamines? Dermatology and allergies
Where is histamine released from? Mast Cells
What is pruritus? Itchiness
What is a common allergic reaction? pruritus
Other than pruritus, what are 2 other adverse reactions seen with histamine release? hypotension and contriction of bronchioles
T/F - Antihistamines are anti-inflammatories. True
T/F - Antihistamines counteract histamines. False - they are a preventative and do not counteract
What is the major use of antihistamines in canines? atopy (allergies)
T/F - Antihistamines should be the first drug of choice. True
Clinical uses for antihistamines: pruritis (itching), urticaria (hives), laminitis, motion sickness, anaphylactic shock, reverse sneexe syndrome, heaves (equine asthma), feline asthma and upper respiratory tract infections
The most common side effect of antihistamines is: sedation or lethargy
What are some other side effects associated with antihistamine use: CNS excitation, birth defects (teratogenicity), anti-cholinergic action, rare agranulocytosis
What is a major contraindication with antihistamine use? Anticonvulsant drugs (phenobarbitol)
Diphenhydramine/Benadryl(R): Forms Most common, forms include oral caps and elixirs and injectables
Chlorpheniramine/Chor-trimetron(R) Common, not as effective for skin problems
Hydroxyzine/Atarax(R) Causes relaxation of skeletal muscles, less side effects than classic antihistamines, tab form, some analgesic effect
Dimenhydrinate/Dramamine(R) antiemetic
Pyrilamine Maleate/Histavet(R) Heaves in horses, LA, Granule form
Pramoxine/Relief(R) shampoos
Cyproheptadine side effect: PP, not first choice of antihistamine
Created by: k.jamie9