Logothetis: Local Anesthesia for the Dental Hygienist Chapter 08: Determining
Drug Doses Answers to End-of- chapter Review Questions latest update 2025
Terms in this set (36)
Logothetis: Local Anesthesia for
the Dental Hygienist, 2nd
Edition
Chapter 08: Determining Drug
Doses Student Practice Exam
MULTIPLE CHOICE
1. Which of the following
factors is NOT a consideration
in determining the MRD of a
local anesthetic?
a. The patient's overall health
b. The patient's weight
c. The patient's height
d. The maximum dosage per
appointment ANS: C
Correct: (c) The patient's height is not a
consideration in determining the
MRD of a local anesthetic.
Incorrect:
(a) The patient's overall health is an
important factor in determining
the MRD of a local anesthetic.
(b) The patient's weight is an
important factor in determining
the MRD of a local anesthetic.
(d) The maximum dosage for each
appointment is an important factor in
,determining the MRD of a local
anesthetic. REF: Page 8-4
2. All MRDs are calculated first in _.
a. milligrams
b. milliliters
c. liters
d. ounc
es
ANS: A
Correct: (a) MRDs are calculated
first in milligrams and are then
converted to
milliliters.
Incorrect:
(b) MRDs are calculated first in milligrams.
(c) MRDs are calculated first in milligrams.
(d) MRDs are calculated first in milligrams.
REF: Page 8-5
,3.The first step in calculating the MRD is to
_______.
a. calculate the milligrams of
solution in one cartridge of
anesthetic
b. obtain the necessary patient information
c. convert the MRD to cartridges
d. convert the maximum
cartridges to milliliters
ANS: B
Correct: (b) The first step in
calculating the MRD is to
obtain the necessary patient
information to perform the
calculation.
Incorrect:
(a) Calculating the milligrams of
solution in one cartridge of
anesthetic is the second step in
determining the MRD.
(c) Converting the MRD to
cartridges is the fourth step in
calculating the MRD.
(d) Converting the maximum
cartridges to milliliters is the
fifth step in calculating the
MRD.
REF: Page 8-5
4. In a 3% carbocaine solution,
how many milligrams of
carbocaine are present per
milliliter (mg/mL) of solution?
, a. 1.8 mg/mL
b. 3 mg/mL
c. 54 mg/mL
d. 30
mg/mL
ANS: D
Correct: (d) A 3% carbocaine
solution will contain 3 × 10
mg/mL = 30 mg/mL of
carbocaine.
Incorrect:
(a) 30 mg/mL of carbocaine are
present in a 3% carbocaine
solution.
(b) 30 mg/mL of carbocaine are
present in a 3% carbocaine
solution.
(c) 30 mg/mL of carbocaine are
present in a 3% carbocaine
solution.
REF: Page 8-6
5. How many 2% lidocaine
cartridges can be safely
administered to a patient who
weighs 135 pounds? (MRD per
appointment for lidocaine is 2.0
mg/lb.)
a. 9.7 cartridges
b. 6.6 cartridges
c. 7.5 cartridges
d. 8.3
cartridges
Drug Doses Answers to End-of- chapter Review Questions latest update 2025
Terms in this set (36)
Logothetis: Local Anesthesia for
the Dental Hygienist, 2nd
Edition
Chapter 08: Determining Drug
Doses Student Practice Exam
MULTIPLE CHOICE
1. Which of the following
factors is NOT a consideration
in determining the MRD of a
local anesthetic?
a. The patient's overall health
b. The patient's weight
c. The patient's height
d. The maximum dosage per
appointment ANS: C
Correct: (c) The patient's height is not a
consideration in determining the
MRD of a local anesthetic.
Incorrect:
(a) The patient's overall health is an
important factor in determining
the MRD of a local anesthetic.
(b) The patient's weight is an
important factor in determining
the MRD of a local anesthetic.
(d) The maximum dosage for each
appointment is an important factor in
,determining the MRD of a local
anesthetic. REF: Page 8-4
2. All MRDs are calculated first in _.
a. milligrams
b. milliliters
c. liters
d. ounc
es
ANS: A
Correct: (a) MRDs are calculated
first in milligrams and are then
converted to
milliliters.
Incorrect:
(b) MRDs are calculated first in milligrams.
(c) MRDs are calculated first in milligrams.
(d) MRDs are calculated first in milligrams.
REF: Page 8-5
,3.The first step in calculating the MRD is to
_______.
a. calculate the milligrams of
solution in one cartridge of
anesthetic
b. obtain the necessary patient information
c. convert the MRD to cartridges
d. convert the maximum
cartridges to milliliters
ANS: B
Correct: (b) The first step in
calculating the MRD is to
obtain the necessary patient
information to perform the
calculation.
Incorrect:
(a) Calculating the milligrams of
solution in one cartridge of
anesthetic is the second step in
determining the MRD.
(c) Converting the MRD to
cartridges is the fourth step in
calculating the MRD.
(d) Converting the maximum
cartridges to milliliters is the
fifth step in calculating the
MRD.
REF: Page 8-5
4. In a 3% carbocaine solution,
how many milligrams of
carbocaine are present per
milliliter (mg/mL) of solution?
, a. 1.8 mg/mL
b. 3 mg/mL
c. 54 mg/mL
d. 30
mg/mL
ANS: D
Correct: (d) A 3% carbocaine
solution will contain 3 × 10
mg/mL = 30 mg/mL of
carbocaine.
Incorrect:
(a) 30 mg/mL of carbocaine are
present in a 3% carbocaine
solution.
(b) 30 mg/mL of carbocaine are
present in a 3% carbocaine
solution.
(c) 30 mg/mL of carbocaine are
present in a 3% carbocaine
solution.
REF: Page 8-6
5. How many 2% lidocaine
cartridges can be safely
administered to a patient who
weighs 135 pounds? (MRD per
appointment for lidocaine is 2.0
mg/lb.)
a. 9.7 cartridges
b. 6.6 cartridges
c. 7.5 cartridges
d. 8.3
cartridges
