Tavalin's bullshit Flashcards

1
Q

Henderson-Hasselbalch equation

A
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2
Q

Therpeutic window is

A

Maximum tolerable concentration - minimum effective concentration

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3
Q

Advantages and disadvantages of oral administration

A

Advantages: safe, cheap

Disadvantages: Slow onset, patient noncompliance, low bioavailability (1st pass)

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4
Q

Factors affecting GI absoprtion of drugs

A
  1. Acidic environment of stomach cna breakdown drugs
  2. Gastric emptying time
  3. Intestinal motility and transit time
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5
Q

Volume distribution equation

A
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6
Q

Who does Tavalin remind you of?

A
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7
Q

Volume of extracellular fluid

A

13-16 L

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8
Q

Volume of plasma

A

~4 L

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9
Q

Volume of interstitial fluid

A

10-13 L

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10
Q

Volume of intracellular fluid

A

25-28 L

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11
Q

Total body water

A

40 L

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12
Q

Phase I metbaolic reactions take place in

A

Endoplasmic reticulum

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13
Q

Phase II metabolic reactions take place in

A

Cytosol

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14
Q

Phase I reaction types

A
  1. Oxidation
  2. Reduction
  3. Hydrolysis
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15
Q

Phase II reaction types

A
  1. Glucuronidation
  2. Acylation
  3. Sulfoxidation
  4. Glutathione conjugation
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16
Q

Energy source required for cytochrome P450 function

A

NADPH

17
Q

Population distribution for genotypic polymorphisms

A
18
Q

Renal clearance of 120 mL/min

A

Drug is filtered, but not secreted or reabsorbed

19
Q

Renal clearance less than 120 mL/min

A

Drug shows net reabsorption

20
Q

Renal clearance greater than 120 mL/min

A

Tubular secretion is contributing to elimination of the drug

21
Q

Dosing rate equation

A

Dosing rate = CL x Css

Css = Steady-state concentration

22
Q

Organ clearance equation

A

CL = Q[(CA - CV)/CA] = Q x E

Q = blood flow to organ

CA = arterial concentration

CV = venous concentration

E = extraction ratio

23
Q

Elimination half-life equation

A

Ke = 0.7/t1/2

Ke = CL/Vd

Ke = elimination constant

24
Q

Bioavailability and dosing equation

A

Css = (F x Dose)/(CL x T)

Css = Steady state concentration

F = bioavailability term

T = dosing interval

25
Q

Loading dose equation

A

Loading dose = (Css x Vd) / F

Css = Steady-state concentration

Vd = Volume distribution

F = bioavailability term

26
Q

Dosing rate equation

A

Dosing rate = (target Css x CL) / F