C&P: Opioids Flashcards

1
Q

Opioids pH

A

All bases

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2
Q

Morphine: pKa

A

8.0

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3
Q

Morphine: relative lipid solubility

A

1 (ie relative to itself)

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4
Q

Morphine: relative potency

A

1 (ie relative to itself)

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5
Q

Morphine: protein binding (%)

A

35

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6
Q

Morphine: volume of distribution (L/kg)

A

3.5

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7
Q

Morphine: oral bioavailability (%)

A

25-30

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8
Q

Morphine: metabolism

A

Glucuronidation; N-demethylation

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9
Q

Morphine: clearance (ml/(kg*min))

A

16

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10
Q

Morphine: elimination rate (min)

A

170

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11
Q

Diamorphine: chemical composition

A

Diacetylmorphine

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12
Q

Diamorphine: pKa

A

7.6

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13
Q

Diamorphine: relative lipid solubility

A

250

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14
Q

Diamorphine: relative potency

A

2

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15
Q

Diamorphine: protein binding (%)

A

40

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16
Q

Diamorphine: volume of distribution (L/kg)

A

5

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17
Q

Diamorphine: oral bioavailability

A

low

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18
Q

Diamorphine: metabolism

A

ester hydrolysis to morphine

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19
Q

Diamorphine: clearance (ml/(kg*min))

A

3.1

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20
Q

Diamorphine: elimination rate (min)

A

5 (half life)

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21
Q

Codeine: chemical composition

A

methylmorphine

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22
Q

Codeine: pKa

A

8.2

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23
Q

Codeine: relative lipid solubility

A

n/a

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24
Q

Codeine: relative potency

A

0.1

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25
Q

Codeine: protein binding (%)

A

7

26
Q

Codeine: volume of distribution (L/kg)

A

5.4

27
Q

Codeine: oral bioavailability (%)

A

50 (20-80)

28
Q

Codeine: metabolism

A

Glucuronidation, demethylation (CYP2D6)

29
Q

Codeine: clearance (ml/(kg*min))

A

23

30
Q

Codeine: elimination rate (min)

A

170

31
Q

Fentanyl: pKa

A

8.4

32
Q

Fentanyl: relative lipid solubility

A

600

33
Q

Fentanyl: relative potency

A

100

34
Q

Fentanyl: protein binding (%)

A

83

35
Q

Fentanyl: volume of distribution (L/kg)

A

4.0

36
Q

Fentanyl: oral bioavailability (%)

A

33

37
Q

Fentanyl: metabolism

A

N-Dealkylation then hydroxylation

38
Q

Fentanyl: clearance (ml/(kg*min))

A

13

39
Q

Fentanyl: elimination rate (min)

A

190

40
Q

Fentanyl: chemical composition

A

Synthetic phenylpiperidines

41
Q

Alfentanil: pKa

A

6.5

42
Q

Alfentanil: relative lipid solubility

A

90

43
Q

Alfentanil: relative potency

A

10-20

44
Q

Alfentanil: protein binding (%)

A

90

45
Q

Alfentanil: volume of distribution (L/kg)

A

0.6

46
Q

Alfentanil: oral bioavailability (%)

A

n/a

47
Q

Alfentanil: metabolism

A

N-Demethylation

48
Q

Alfentanil: clearance (ml/(kg*min))

A

6

49
Q

Alfentanil: elimination rate (min)

A

100

50
Q

Alfentanil: chemical composition

A

Synthetic phenylpiperidines

51
Q

Remifentanil: pKa

A

7.1

52
Q

Remifentanil: relative lipid solubility

A

20

53
Q

Remifentanil: relative potency

A

100

54
Q

Remifentanil: protein binding (%)

A

70

55
Q

Remifentanil: volume of distribution (L/kg)

A

0.3

56
Q

Remifentanil: oral bioavailability (%)

A

n/a

57
Q

Remifentanil: metabolism

A

Plasma and tissue esterases

58
Q

Remifentanil: clearance (ml/(kg*min))

A

40

59
Q

Remifentanil: elimination rate (min)

A

10

60
Q

Remifentanil: chemical composition

A

Synthetic phenylpiperidines