math stuff Flashcards
1
Q
1 oz = __ g
A
28.4 g
2
Q
1lb = __ g
A
454 g
3
Q
1 grain= __ mg
A
64.8 mg
4
Q
1 meter is ___ cm
A
100 cm
5
Q
percentage strength=
A
100/ ratio strength
6
Q
ratio strength=
A
100/percent strength
7
Q
ppm to percent strength
A
decimal to the left 4
8
Q
percent strength to ppm
A
decimal to the right 4
9
Q
SG=
A
g/ml
10
Q
mosmol/l=
A
(g/mw)xpx1000
11
Q
E=
A
(58.5)(i)/(MW)(1.8)
12
Q
mols=
A
g/mw
13
Q
mmols=
A
mg/mw
14
Q
mEq=
A
(mgxvalence)/MW or
mmolsxvalence
15
Q
carbs and protein
A
4cal/gtam
16
Q
fat
A
9cal/gram
17
Q
dextrose
A
3.4 cal/gram
18
Q
amino acid solm
A
4 cal/gram
19
Q
ile 10
ile 20
ile 30
A
10- 1.1 cal/ml
20-2 cal/ml
30- 3cal/ml
20
Q
glycerol/glycerin
A
4.3 cal/gram
21
Q
daily fluid needs
A
1500+(20)(kg-20)
22
Q
TEE=
A
BEExAFxSF
23
Q
grams of nitrogen from protein
A
N=protein intake in grams/6.25
24
Q
crcl
A
(140-age)x(kg)/(72xscr). X0.85 if female
25
ibw
male- 50+2.3(in over 60)
| female- 45.5+2.3(in over 60)
26
adjusted bodyweight
ibw+0.4(tbw-ibw)
27
if underweight which weight to use for drug dosing
TBW
28
for most drugs which weight to use for drug dosing
TBW
29
drugs that require special dosing depending on weight
```
acyclovir
aminophylline
theophylline
levothyroxine
aminoglycosides
```
30
```
acyclovir
aminophylline
theophylline
levothyroxine
if normal weight or obese use which weight
```
IBW
31
for aminoglycosides if obese use
adjusted bodyweight
32
bun:scr for dehydration
>20:1
33
AG
na-cl-hco3
34
weak acid pH calculation
pH=pka+log(salt/acid)
35
weak base pH calculation
pH=pka=log(base/salt)
36
pkb=
14-pka
37
%ionization weak acid
100/1+10^pka-pH
38
%ionization weak base
100/1+10^pH-pka
39
ANC=
WBCx(segs+bands/100)
40
C=
F-32/1.8
41
F=
CX1.8+32
42
TTB (in min)
spfxttb(without sunscreen)
43
mean
avg
44
median
value in the middle of an ordered list
45
mode
value that occurs most frequent
46
risk
subjects with unfavorable event/total number in a group
47
Relative RIsk
risk in treatment/risk in control
48
Relative Risk Reduction
1-RR
49
Absolute risk reduction
%risk control-%risk treatment
50
NNT or NNH
1/ARR (arr is expressed as a decimal
51
OR
(AD)/(BC)
52
Hazard ratio
hazard rate in treatment/hazard rate in control
53
initiating basal bolus insulin in type 1 diabetes
- calculate TDD using TBW (0.5 u/kg/day)
- divide into 1/2 basal and 1/2 rapid acting
- if using nph/r, use 2/3 and 1/3
- split the rapid among meals
54
insulin to carbohydrate ratio for rapid acting insulin
500/TDD= grams of carb covered by 1 unit of insulin
55
insulin to carb ratio for regular insulin
450/TDD=grams of carb covered by 1 unit of insulin
56
correction factor for rapid acting
1800/TDD= correction factor for 1 unit of insulin
57
correction factor for regular insulin
1500/TDD= correction factor for 1 unit of insulin
58
correction dose
(bg now)-(target bg)/(correction factor)
59
friedwald equation for LDL
LDL= TC-HDL-TG/5
do not use if TG are abpve 400
60
MWQ
=sensitivity requirement/0.05
61
bioavailability (F%)
100x(aucE/aucI)x(doseI/doseE)
62
volume of distribution
vd=amt of drug in body/concentration in plasma
63
cl=
kxv
64
cl=
dose/auc
65
k=
c/vd
66
predicting drug concentrations 1st
c2=c1xe-kt
67
prediciting drug concentrations 2nd
ke=ln (c1/c2)/t
68
t1/2
=0.693/k
69
loading dose=
conc.des.xVd/F
70
phenytoin (mcg/ml)=
(phenytoin)/(0.2xalbumin)+0.1
71
kcl 10%=
20MEQ/15ml
72
calcium carbonate
40%
73
calcium citrate
21%
74
aminophylline to theophylline
ATM (multiply by 0.8)
75
theophylline to aminophylline
divide by 0.8
76
loops
E 50
F 40
T 20
B 1
77
furosemide iv to po
IV:PO
1:2
all other loops 1:1
78
metoprolol IV:PO
1:2.5
79
Iron
sulfate
gluconate
sulfate: 20%
gluconate: 12%
80
insulin conversions usually
1: 1 except
- NPH dosed BID to glargine dosed daily
- toujeo to lantus
- toujeo to basaglar
81
levothyroxine IV to PO
IV:PO
| 0.75:1
82
statins
```
pharmacists rock at saving lives and preventing flu
P2
R5
A10
S20
L40
P40
F80
```
83
Steroids
cute hot pharmacists and physicians marry together and deilver babies
```
Cortisone 25
Hydrocortisone 20
Prednisone 5
Prednisolone5
Methylprednisolone 4
Triamcinolone 4
Dexamethasone 0.75
Betamethasone 0.6
```
84
5 mL lithium citrate syrup=___ mg lithium carbonate = ___ meq lithium ion
300mg lithium carbonate, 8 meq lithium ion
