StudentRDH
Local
Anesthesia
Which
of
the
following
symptoms
can
be
caused
by
paresthesia?
a.
Numbness
b.
Pain
c.
Swelling
D.
All
of
the
above
-
ANSD.
All
of
the
above
Paresthesia
commonly
reported
with
anesthesia
with
high
concentrations
(prilocaine
&
articaine)
Which
of
the
following
drugs
fall
under
pregnancy
category
B?
a.
Carbocaine
b.
Marcaine
C.
Citanest
d.
Septocaine
-
ANSC.
Citanest
Citanest
(Prilocaine)
and
Xylocaine
(Lidocaine)
are
pregnancy
B
Carbocaine,
Marcaine
and
Septocaine
are
pregnancy
category
C
Which
of
the
following
does
not
help
alleviate
the
symptoms
of
trismus?
a.
apply
heat
for
20
min
b.
use
warm
saline
rinses
c.
use
muscle
relaxants
d.
use
oraverse
-
ANSd.
Use
oraverse
oraverse
increase
amount
of
blood
flow
to
target
area
which
allows
tissue
to
recover
more
rapidly.
Used
to
decrease
duration
of
anesthesia,
not
trismus
What
is
the
most
common
cause
of
needle
breakage?
a.
bending
of
needle
b.
sudden
pt
movement
c.
forceful
contact
of
bone
d.
use
of
thin
needles
-
ANSb.
sudden
pt
movement
Which
of
the
following
can
be
an
early
sign
of
local
anesthetic
overdose?
a.
drowsiness
b.
loss
of
consciousness c.
respiratory
arrest
d.
twitching
-
ANSd.
twitching
What
can
a
clinician
do
to
control
a
hematoma?
a.
apply
heat
for
20
min
b.
apply
ice
for
2
min
c.
alternate
ice
and
heat
d.
all
of
the
above
-
ANSb.
apply
ice
for
2
min
direct
pressure
&
ice
for
2
min.
Can
use
heat
on
next
day
If
a
patient
is
allergic
to
red
wine,
which
of
the
following
precautions
should
be
taken?
a.
inject
less
anesthetic
b.
inject
drug
more
slowly
c.
aspirate
three
times
before
injection
d.
avoid
local
anesthetics
within
vasoconstrictors
-
ANSd.
avoid
local
anesthetics
within
vasoconstrictors
What
can
cause
paresthesia?
a.
forceful
contact
of
needle
to
the
bone
b.
hemorrhage
around
the
nerve
c.
change
of
needle
direction
d.
bending
of
the
needle
-
ANSb.
hemorrhage
around
the
nerve
Local
anesthesia
given
in
preparation
for
endo
treatments
can
sometimes
fail?
What
could
be
the
reason?
a.
excessive
bleeding
at
the
site
b.
patient
is
anxious
c.
patient
is
experiencing
overdose
d.
the
pH
of
the
tissue
has
been
lowered
-
ANSd.
the
pH
of
the
tissue
has
been
lowered
Which
of
the
following
emergency
conditions
occurs
the
most
frequently
with
local
anesthetic
injections?
a.
heart
attack
b.
breathing
problems
c.
syncope
d.
anaphylaxis
-
ANSc.
syncope
Which
of
the
following
advice
can
help
a
patient
prevent
soft
tissue
injuries
following
local
anesthesia?
a.
do
not
consume
hot
drinks
for
4
hours
b.
do
not
eat
for
4
hours c.
keep
a
cotton
roll
attached
to
a
floss
in
the
mucobuccal
fold
d.
all
of
the
above
-
ANSd.
all
of
the
above
Methemoglobinemia
is
a
contraindication
for
which
of
the
following
local
anesthetics?
a.
prilocaine
b.
mepivacaine
c.
procaine
d.
septocaine
-
ANSa.
prilocaine
when
metabolized,
prilocaine
forms
methemoglobin
which
causes
methemoglobinemia.
Why
do
ester
drugs
occasionally
cause
allergic
reactions?
a.
esters
are
biotransformed
in
the
liver
b.
esters
reduce
the
oxygen
carrying
capacity
of
hemoglobin
c.
esters
diffuse
through
soft
and
hard
tissues
more
readily
d.
esters
produce
para-aminobenzoic
acid
-
ANSd.
esters
produce
para-aminobenzoic
acid
esters
are
biotransformed
in
the
plasma
Which
of
the
following
is
an
absolute
contraindication
for
using
vasoconstrictors?
a.
MI
episode
within
past
6
yrs
b.
Angina
attack
over
6
mos
c.
Allergy
to
sodium
bisulfite
d.
HTN
stage
II
-
ANSc.
Allergy
to
sodium
bisulfite
preservative
to
vasoconstrictors
Which
of
the
following
injections
is
more
likely
to
cause
trismus?
a.
PSA
nerve
block
b.
MSA
nerve
block
c.
ASA
nerve
block
d.
Infiltration
-
ANSPSA
nerve
block
Which
of
the
following
is
true
about
the
effect
of
local
anesthetics
on
the
CNS?
a.
Local
anesthetics
do
not
cross
the
blood-brain
barrier
b.
Tonic-clonic
convulsions
always
occur
with
overdose
c.
toxicity
is
usually
not
observable
within
the
first
10
min
from
injection
d.
Overdose
is
expressed
as
CNS
excitation
followed
by
depression
-
ANSd.
Overdose
is
expressed
as
CNS
excitation
followed
by
depression
At
the
end
of
the
dental
appointment,
you
noticed
that
one
side
of
the
patient's
face
is
"drooping".
What
could
have
caused
this
change? a.
Local
anesthetic
was
deposited
into
the
parotid
b.
muscles
spasms
occurred
from
opening
the
jaw
for
too
long
c.
the
needle
nicked
a
blood
vessel
d.
the
patient
is
experiencing
syncope
-
ANSa.
Local
anesthetic
was
deposited
into
the
parotid
Which
of
the
following
method
can
best
resolve
symptoms
associated
with
trismus?
a.
cold
compressions
b.
heat
compression
with
normal
eating
c.
use
of
a
straw
when
drinking
liquids
d.
restriction
of
the
movement
of
the
jaw
for
a
week
-
ANSb.
heat
compression
with
normal
eating
When
providing
local
anesthesia
for
a
child,
which
of
the
following
is
not
true?
a.
use
topical
anesthetics
instead
of
injections
if
possible
b.
needle
penetration
depth
is
generally
less
deep
c.
use
less
anesthetics
compared
to
adults
d.
use
infiltrations
rather
than
nerve
blocks
-
ANSa.
use
topical
anesthetics
instead
of
injections
if
possible
topical
anesthesia
must
be
given
with
caution
b/c
they
are
at
higher
concentrations
The
patient
is
currently
taking
Elavil
(tricyclic
antidepressants).
What
should
be
avoided
when
administering
local
anesthesia?
a.
avoid
topical
anesthetics
b.
avoid
levonordefrin
c.
avoid
local
anesthesia
d.
avoid
amides
-
ANSb.
avoid
levonordefrin
levonordefrin
is
a
vaso
added
to
mepivacaine
to
counteract
vasodilating
actions.
Vasopressor
potencies
(ex.
elavil)
can
heighten
the
cardiac
stimulation
and
interact
with
the
vasoconstrictor.
What
can
the
patient
do
to
relieve
trismus?
a.
apply
pressure
b.
apply
ice
c.
apply
heat
d.
restrict
jaw
movements
for
days
-
ANSc.
apply
heat
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