Diphenhydramine HCI Flashcards
1
Q
Classification
A
Antihistamine
2
Q
Mechanism of Action
A
- Binds & blocks H1 histamine receptors
3
Q
Indications
A
- Anaphylactic reactions
4
Q
Contraindications
A
- Known hypersensitivity
- Asthma - can thicken secretions
- Caution in patients with cardiac history
5
Q
Adverse Effects
A
- Tachycardia
- PVCs
- Hyper/hypotension
- Palpitations
- Arrhythmias
- Sedation
6
Q
Administration
A
- 25-50 mg IV/IO/IM