Cram Flashcards
Thiopental
Chemical composition
Thiobarbituate
Thiopental
Dose
3-7 mg/kg
Thiopental
pKa
7.6
Thiopental
pH
10.5
Thiopental
Volume of distribution
2.5 L/kg
Thiopental
protein binding
80%
Propofol
Chemical composition
2,6 Diisopropylphenol
Propofol
dose
1-2 mg/kg
Propofol
pKa
11.0
Propofol
pH
6-8.5
Propofol
Protien binding
98%
Ketamine
Chemical compostion
Phencyclidine derivative
Ketamine
dose
1-2mg/kg IV
5-10 mg/kg IM
Ketamine
pKa
7.5
Ketamine
pH
3.5-5.5
Ketamine
protein binding
25%
Etomidate
Chemical composition
Imidazole ester
Etomidate
Dose
0.3mg/kg
Etomidate
pKa
4.0
Etomidate
pH
8.1
Etomidate
volume of distribution
3.0 L/kg
Etomidate
MOA
stimulates GABA
Ketamine
MOA
Inhibits NMDA
Propofol
MOA
Stimulates GABA, inhibits NMDA
Thiopental
MOA
increases duration of GABAa opening
Which IV induction agents have active metabolites
Thiopental, Ketamine
Which IV induction agents have inactive metabolites
Propofol, etomodate
Which IV induction agent is not racemic
Propofol
Metabolism of thiopentone
Oxidation
Metabolism of propofol
Gluronidation and hydroxylation
metabolism of ketamine
N-demethylation and hydroylation
Metabolism of etomidate
Plasma and hepatic esterases
Elimination rate (hours) Etomidate ketamine Propofol thiopental
1-4
2
5-12
6-15
Clearance ml/kg/min Etomidate ketamine Propofol thiopental
10-20
17
30-60
3.5
Which IV induction agents cause pain on injection
propofol, etomidate
Which local anaesthetics are esters (-COO-)
procaine
amethocaine
Which local anaesthetics are amides (-NHCO-)
lidocaine, prilocaine, bupivicaine, ropivicaine, mepivicaine
short acting local anaesthetic (and protein binding)
procaine (6%)
medium acting local anaesthetic (and protein binding)
lidocaine (70%), prilocaine (55%), mepivicaine (77%)
long acting local anaesthetic (and protein binding)
amethocaine (75%), bupivicaine (95%), ropivicaine (94%)
slow onset local anaesthetic (and pKa)
Esters and mepivicaine (7.6)
Fast onset local anaesthetic (and pKa)
lidocaine (7.9), prilocaine (7.7)
Max dose lidocaine
3 mg/kg
Max dose prilocaine
6mg/kg
Max dose bupivicaine
2 mg/kg
Max dose ropivicaine
3.5mg/kg