Ondansetron (Zofran) Flashcards
1
Q
Ondansetron Classification
A
Antiemetic
2
Q
Ondansetron Mechanism
A
5HT3 (Seratonin) R antagonist -> blocks seratonin binding to receptors at vagal nerve terminals -> inhibits vomiting reflex
3
Q
Ondansetron Pharmacokinetics
A
Onset: Rapid
Peak Effects: 15-30m
Duration: 4-8h
Half Life: 4h
4
Q
Ondansetron Indications
A
Nausea/Vomiting
5
Q
Ondansetron Contraindications
A
Hypersensitivity
6
Q
Ondansetron Side Effects/Adverse Reactions
A
HA, dizziness, tachycardia, prolonged QT intervals
7
Q
Ondansetron Dose
A
Adult:
4mg slow IV IO, may repeat once
Pedi:
0.1mg/kg (max 4mg) slow IV IO
8
Q
Ondansetron Precautions
A
Lower risk of sedation and dystonia than other antiemetics
9
Q
Ondansetron Drug Interactions
A
Few in EMS