Bioavailability and Clearance III + IV Flashcards

1
Q

Beta blockers

A

-lower QH
-lower cardiac output

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2
Q

incressing CL

A

dec AUCiv

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3
Q

factors effecting F of low Eh drug

A

-none

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4
Q

factors affecting F in HIGH EH drug

A

-QH
-fu
-CLint

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5
Q

increasing CLint will

A

decrease F of high EH drug

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6
Q

Factors affecting AUC

A

factors affecting CL

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7
Q

CL and AUCiv move in

A

opposite directions

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8
Q

factors affecting AUCiv of low EH drug

A

-fu
-CLint

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9
Q

factors affecting AUCiv of high EH drug

A

-Qh

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10
Q

Oral clearance of low and high EH drugs

A

CL/F = fu x CLint

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11
Q

factors affecting AUCpo

A

-fu
-CLint
in both high and low EH drugs

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12
Q

CL and AUCpo move in

A

opposite directions

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13
Q

Weak base is ionized at

A

low pH

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14
Q

ionization of drug (polar, strong acids and bases)

A

-low reabsorption
-lower renal CL

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15
Q

unionized drug (weak acids and bases)

A

-higher reabsorption
-low renal CL

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16
Q

urine flow rate affects

A

reabsorption

17
Q

urine pH affects

A

reabsorption

18
Q

renal transporters affect

A

secretion

19
Q

infusion vs multiple dosing

A

-jagged line
-reach similar steady state

20
Q

filtration

A

-glomerulus
-depends on MW and fu

21
Q

only unbound drug in plasma water is

A

filtered

22
Q

secretion

A

-proximal tubule
-active-carrier mediated
-saturable
-not neurtal drugs

23
Q

high ER drugs

A

-secretion only dependent on blood flow

24
Q

low ER drugs

A

-secretion dependent only on fu

25
Q

factors affecting renal absorption

A

-polarity
-ionization
-urine flow
-urine pH

26
Q

increase urine flow

A

increases excretion

27
Q

high plasma protein binding

A

decreases excretion

28
Q

acidic urine

A

-reabsorption of weak acids
-inc CLr of weak base

29
Q

basic urine

A

-reabsorb bases
-inc CLr of weak acid