Induction Agent Dosages Flashcards
Propofol (alternate name)
Diprivan
Propofol structure:
Sedative/hypnotic
2, 6 diisopropylphenol
Lipid soluble, weak acid
Propofol MOA:
- GABA-A agonist (Beta subunit)
- Decreases rate of dissociation of GABA from receptor increasing the duration of chloride channel opening
- Hyperpolarizes cell
- Also inhibits NMDA, stimulates glycine
Propofol Onset:
30-60 sec
Propofol duration of action:
5-15 min
Propofol PB:
98%
Propofol metabolism:
CYP3A4, 2B6
60% liver,
30% kidneys,
10% lungs/small intestine
Propofol IV induction dose:
IV: 1-2.5 mg/kg (induction)
Propofol IV drip dose:
IV: 50-300 mcg/kg/min (maintenance drip)
Propofol IV Sedation drip dose:
IV: 25-75 mcg/kg/min (sedation)
Propofol IV antiemetic dosing:
IV: 10 mcg/kg/min or
10-20 mg q5-10 min (antiemetic)
Propofol side effects:
- Decreased BP (25-40%)
- Decreased SV
- Decreased CO
- Decreased CBF
- Decreased CMRO2
Propofol Contraindications / cautions:
- Crosses Placenta
- Decrease in elderly
- Discard after 6 hr of drawing up
- Do not mix with other agents (PE risk)
- Painful injection (Ph? Propylene glycol?)
- Myoclonus
- Bradycardic death
- Green urine – benign
- increased Lipid levels
Etomidate (alternate name):
Amidate
Etomidate structure:
Non-barbiturate hypnotic
imidazole derivative
ester, base, water soluble