Questions and Answers
What is the classification of Diphenhydramine Hydrochloride (Benadryl)?
What is the action of Diphenhydramine Hydrochloride (Benadryl)?
Binds and blocks H1 histamine receptors.
Which of the following are indications for using Diphenhydramine Hydrochloride (Benadryl)?
What are the contraindications for Diphenhydramine Hydrochloride (Benadryl)?
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What is a common adverse effect of Diphenhydramine Hydrochloride (Benadryl)?
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Diphenhydramine Hydrochloride (Benadryl) dosage for adults is ______ mg IV/IO/IM.
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What special considerations should be observed when administering Diphenhydramine Hydrochloride (Benadryl)?
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What precautions should be taken when using Diphenhydramine Hydrochloride (Benadryl)?
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Study Notes
Classification
- Antihistamine classification of diphenhydramine hydrochloride (Benadryl).
Action
- Binds and blocks H1 histamine receptors.
- Treats allergic reaction symptoms mediated by histamine.
Indications
- Effective for allergic reactions.
- Used for dystonic medication reactions and akathisia (agitation or restlessness).
Contraindications
- Not recommended for acute asthma due to thickened secretions.
- Caution in patients with cardiac histories and known sensitivity to the drug.
Adverse Reactions
- Common side effects include drowsiness, dizziness, and headache.
- Can cause excitement in children, dry mouth, and flushing.
Dosage and Administration
- Adults typically receive 50 mg via IV/IO/IM.
- Pediatric dosage is 1 mg/kg slow IV/IO/IM, with a maximum of 50 mg.
Special Considerations
- May have additive effects when used with CNS depressants or alcohol.
- Anticholinergic effects can help treat dystonic reactions from antipsychotic and antiemetic medications.
- MAO inhibitors can enhance anticholinergic effects of antihistamines.
- Classified as pregnancy category B.
Precautions
- Use with caution in patients with acute asthma or COPD due to risk of thickened secretions.
- Contraindicated in patients with narrow-angle glaucoma.
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Description
Test your knowledge of Diphenhydramine Hydrochloride, commonly known as Benadryl. This quiz covers its classification, action, and indications in treating allergic reactions. Perfect for students and professionals in the medical field.
