HESI:
Dosage
Calculations
Assignment
Quiz
Heparin
protocol
is
prescribed
for
a
client
weighing
90
kg.
Per
protocol,
the
heparin
loading
dose
is
60
units/kg
IV
rounded
to
the
nearest
100
units,
with
a
maximum
loading
dose
of
4,000
units.
The
heparin
vial
is
labeled
5,000
units/ml.
How
many
ml
should
the
nurse
administer?
(Enter
the
numeric
value
only.
If
rounding
is
required,
round
to
the
nearest
tenth.)
false
Item
51164
By
Sheila
Duncan
Heparin
Protocol:
Heparin
loading
dose:
60
units/kg
IV,
rounded
to
the
nearest
100
units,
followed
by
a
maintenance
infusion
of
12
units/kg/hr,
rounded
to
the
nearest
100
units/hr.
The
maximum
bolus
is
4,000
units
and
the
maximum
initial
infusion
is
1000
units/hr.
Determine
the
client
loading
dose:
60
units
x
90
kg
=
5,400
units.
Per
protocol,
use
the
maximum
loading
dose
of
4,000
units,
and
calculate
the
client's
dose
using
the
formula
D/H
x
Q
=
4,000
units
/
5,000
units
x
1
ml
=
4/5
=
0.8
ml
or
Use
ratio
and
proportion:
5,000
:
1
ml
::
4,000
:
X
X
=
0.8
ml
A
child
weighing
28.4
kg
is
in
hypertensive
crisis.
The
healthcare
provider
prescribes
methyldopa
(Aldomet)
40
mg/kg/day
IV
in
4
divided
doses.
The
pharmacy
provides
a
50
mg/ml
injection
vial.
How
many
ml
should
the
nurse
administer?
(Enter
numeric
value
only.
If
rounding
is
required,
round
to
the
nearest
tenth.)
First
calculate
the
total
mg
dose/day:
40
mg
x
28.4
kg
=
1136
mg/day
Next
divide
the
total
mg
into
the
4
dosages
for
the
day:
1136
mg/4
doses
=
284
mg/dose
Using
the
Desired/Have
formula:
284
mg/50mg
x
1
ml
=
5.68
ml/
dose,
rounded
to
5.7
ml.
A
client
with
multiple
sclerosis
and
muscle
spasms
receives
a
prescription
for
baclofen
(Kemstro)
30
mg
PO
daily.
The
medication
is
supplied
from
the
pharmacy
in
20
mg
scored
tablets.
How
many
tablets
should
the
nurse
administer?
(Enter
numeric
value
only.
If
rounding
is
required,
round
to
the
nearest
tenth.)
Use
ratio
and
proportion,
30
mg
:
X
tablets
=
20
mg
:
1
tablet
20X
=
30
X
=
1.5
A
client
with
dehydration
receives
a
prescription
for
an
IV
of
Lactated
Ringer's
1,000
ml
to
be
administered
over
8
hours.
The
nurse
should
program
the
infusion
pump
to
deliver
how
many
ml/hour?
(Enter
numeric
value
only,
using
whole
number.)
Use
the
ratio
of:
1000
ml
:
8
hours
::
X
:
1
hour
1000/X
::
8/1 X
=
125
ml/hour
The
nurse
plans
to
administer
labetalol
hydrochloride
(Trandate)
0.3
grams
PO
to
a
client
with
hypertension.
Trandate
is
available
in
200
mg
scored
tablets.
How
many
tablets
should
the
nurse
administer?
(Enter
numeric
value
only.)
First
convert
grams
to
milligrams
using
the
known
conversion:
1
gram
=
1000
mg.
0.1
gram
=
100
mg
as
0.3
gram
=
300
mg
Next
using
the
formula,
Desired/Available
x
1
tablet
=
300
mg/200
mg
x
1
=
1.5
tablets
A
110-pound,
adult
female
is
admitted
to
the
Emergency
Center
after
receiving
burns
to
40
percent
of
her
body.
Using
the
Parkland
formula,
the
client's
fluid
requirements
for
the
first
24
hours
after
injury
is
calculated
using
Lactated
Ringer's
4
ml
solution
x
Body
weight
(in
kilograms)
x
Percent
burn.
The
client
should
receive
one-half
of
the
24-hour
calculated
fluid
volume
in
the
first
8
hours
of
treatment.
The
nurse
should
set
the
infusion
pump
to
deliver
how
many
ml/hour
during
the
first
8
hours?
(Enter
the
numerical
value
only.
If
rounding
is
required,
round
to
the
nearest
whole
number.)
Using
the
Parkland
formula,
the
client's
fluid
requirements
for
the
first
24
hours
after
injury
is
calculated
using
4
ml
lactated
Ringer's
solution
x
Body
weight
(in
kilograms)
x
Percent
burn
Convert
110
pounds
to
kg
=
110
/
2.2
=
50
kg
4
ml
x
50
kg
x
40
=
8,000
ml
One-half
in
first
8
hours
=
4,000
ml
4,000
ml
/
8
hours
=
500
=
500
ml/hour
A
client
who
has
heart
failure
with
paroxysmal
atrial
tachycardia
is
receiving
digoxin
(Lanoxin)
0.45
mg
IV
as
the
inital
digitalizing
dose.
The
pharmacy
provides
0.25
mg/ml.
How
many
ml
should
the
nurse
administer?
(Enter
numeric
value
only.
If
rounding
is
required,
round
to
the
nearest
tenth.)
Using
the
formula
D/H
x
Q
=
0.45
mg/0.25
mg
x
1
mL
=
1.8
ml
Mineral
oil
U.S.P
30
ml
PO
daily
for
3
days
is
prescribed
for
a
client
who
is
experiencing
severe
constipation.
The
dose
cup
is
marked
in
tablespoons.
How
many
tablespoons
should
the
nurse
administer?
(Enter
numeric
value
only.)
15
ml
equals
1
Tablespoon.
Use
the
ratio
equation:
15
ml
:
1
Tbs
::
30
ml
:
X
15
/
30
::
1
/
X
15X
=
30
X
=
2
Tablespoons
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