Question 1

Which of the following is the first step in calculating the additional dose of a different drug?

Accepted Answer

A)  Calculate how many milligrams of drug #1 have already been administered. 
B)  Calculate MRD of drug #2. 
C)  Review patient's history to determine appropriateness of new drug. 
D)  Consult with dentist and/or physician. 
A)  Calculate how many milligrams of drug #1 have already been administered. 
B)  Calculate MRD of drug #2. 
C)  Review patient's history to determine appropriateness of new drug. 
D)  Consult with dentist and/or physician. C

Question 2

What is the formula for calculating the milligrams of anesthetic drug in 1 mL of the selected anesthetic?

Accepted Answer

Multiply the percent concentration of local anesthetic by 10 mg.

Question 3

What is the MRD of mepivacaine 3% for a 130-lb female patient?

Accepted Answer

A)  390 mg of mepivacaine 
B)  275 mg of mepivacaine 
C)  300 mg of mepivacaine 
D)  572 mg of mepivacaine 
A)  390 mg of mepivacaine 
B)  275 mg of mepivacaine 
C)  300 mg of mepivacaine 
D)  572 mg of mepivacaine A

Question 4

MRD of the local anesthetic agent should be decreased for patients with medically compromised situations,the elderly patient,and children.The lowest effective dose should be administered to any of these patients.

Accepted Answer

A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true;the second statement is false. 
D)  The first statement is false;the second statement is true. 
A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true;the second statement is false. 
D)  The first statement is false;the second statement is true.

Question 5

For what kind of patient should the MRD of local anesthetic agents be decreased?

Accepted Answer

A)  Children 
B)  Elderly 
C)  Medically compromised 
D)  All options listed 
A)  Children 
B)  Elderly 
C)  Medically compromised 
D)  All options listed

Question 6

How many milligrams of lidocaine 2% 1:100,000 epinephrine may a healthy,200-lb patient receive?

Accepted Answer

A)  800 mg 
B)  620 mg 
C)  600 mg 
D)  500 mg 
A)  800 mg 
B)  620 mg 
C)  600 mg 
D)  500 mg

Question 7

Which of the following is the correct chart documentation for local anesthetic?

Accepted Answer

A)  The number of cartridges of local anesthetic administered 
B)  The number of milligrams of local anesthetic administered 
C)  The percentage of a cartridge of local anesthetic administered 
D)  Any of the above 
A)  The number of cartridges of local anesthetic administered 
B)  The number of milligrams of local anesthetic administered 
C)  The percentage of a cartridge of local anesthetic administered 
D)  Any of the above

Question 8

If a patient's MRD is 240 mg and 108 mg of 3% mepivacaine has already been administered,how much more mepivacaine can the patient receive?

Accepted Answer

A)  0 mg of 3% mepivacaine;a different local anesthetic should be selected 
B)  30 mg of 3% mepivacaine 
C)  348 mg of 3% mepivacaine 
D)  132 mg of 3% mepivacaine 
A)  0 mg of 3% mepivacaine;a different local anesthetic should be selected 
B)  30 mg of 3% mepivacaine 
C)  348 mg of 3% mepivacaine 
D)  132 mg of 3% mepivacaine

Question 9

What is the formula for calculating the milligrams of solution in one cartridge of the selected anesthetic?

Accepted Answer

Multiply the number

Question 10

For medically compromised patients,an appointment for nonsurgical periodontal therapy for two quadrants that would normally be completed in one appointment could be completed in two shorter appointments rather than one longer appointment.This would increase the amount of local anesthetic needed per appointment,providing safer treatment to the medically compromised or elderly patient.

Accepted Answer

A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true;the second statement is false. 
D)  The first statement is false;the second statement is true. 
A)  Both statements are true. 
B)  Both statements are false. 
C)  The first statement is true;the second statement is false. 
D)  The first statement is false;the second statement is true.

Question 11

If an anesthetic contains a vasoconstrictor,how is the maximum recommended dose determined?

Accepted Answer

A)  The vasoconstrictor is always the limiting factor. 
B)  The anesthetic is always the limiting factor. 
C)  Whichever of the drugs reaches its MRD first is the limiting factor. 
D)  It is determined by the weight of the patient. 
A)  The vasoconstrictor is always the limiting factor. 
B)  The anesthetic is always the limiting factor. 
C)  Whichever of the drugs reaches its MRD first is the limiting factor. 
D)  It is determined by the weight of the patient.

Question 12

Which anesthetic/vasoconstrictor combination is most likely to limit the anesthetic drug?

Accepted Answer

A)  Lidocaine 2% 1:50,000 epinephrine 
B)  Lidocaine 2% 1:100,000 epinephrine 
C)  Mepivacaine 3% 1:20,000 levonordefrin 
D)  All options listed 
A)  Lidocaine 2% 1:50,000 epinephrine 
B)  Lidocaine 2% 1:100,000 epinephrine 
C)  Mepivacaine 3% 1:20,000 levonordefrin 
D)  All options listed

Question 13

What is the number of milligrams per cartridge of 4% prilocaine?

Accepted Answer

A)  3.24 mg 
B)  2.89 mg 
C)  40 mg 
D)  30 mg 
A)  3.24 mg 
B)  2.89 mg 
C)  40 mg 
D)  30 mg

Question 14

What does the MRD depend on?

Accepted Answer

A)  The patient's weight 
B)  The patient's health 
C)  Whether the anesthetic contains a vasoconstrictor or not 
D)  All options listed 
A)  The patient's weight 
B)  The patient's health 
C)  Whether the anesthetic contains a vasoconstrictor or not 
D)  All options listed

Question 15

What is the MRD for epinephrine for a compromised patient?

Accepted Answer

A)  0.04 mg per appointment 
B)  0.04 mg per quadrant of scaling 
C)  0.2 mg per appointment 
D)  0.2 mg per tooth to be restored 
A)  0.04 mg per appointment 
B)  0.04 mg per quadrant of scaling 
C)  0.2 mg per appointment 
D)  0.2 mg per tooth to be restored

Question 16

What is the MRD of 1:100,000 epinephrine per appointment for a healthy patient?

Accepted Answer

A)  1.0 mg 
B)  0.2 mg 
C)  0.04 mg 
D)  0.4 mg 
A)  1.0 mg 
B)  0.2 mg 
C)  0.04 mg 
D)  0.4 mg

Question 17

What is the formula for calculating how many milligrams of anesthetic solution were administered?

Accepted Answer

A)  Subtract the MRD from the absolute MRD. 
B)  Multiply the percent concentration of local anesthetic agent by 10 mg. 
C)  Multiply the number of cartridges administered by the milligrams of anesthetic in each cartridge. 
D)  Multiply the milligrams of anesthetic in each cartridge by the patient's weight. 
A)  Subtract the MRD from the absolute MRD. 
B)  Multiply the percent concentration of local anesthetic agent by 10 mg. 
C)  Multiply the number of cartridges administered by the milligrams of anesthetic in each cartridge. 
D)  Multiply the milligrams of anesthetic in each cartridge by the patient's weight.

Question 18

How many milligrams of lidocaine 2% 1:100,000 epinephrine may a patient with ischemic heart disease receive?

Accepted Answer

A)  620 mg 
B)  500 mg 
C)  399.6 mg 
D)  79.2 mg 
A)  620 mg 
B)  500 mg 
C)  399.6 mg 
D)  79.2 mg

Question 19

If the dental hygienist were to administer two different local anesthetics,which MRD would she use?

Accepted Answer

A)  Use the higher MRD 
B)  Use the lower MRD 
C)  Use the MRD for the local anesthetic administered in the greatest amount 
D)  Subtract the lower MRD from the higher MRD and use the resulting MRD 
A)  Use the higher MRD 
B)  Use the lower MRD 
C)  Use the MRD for the local anesthetic administered in the greatest amount 
D)  Subtract the lower MRD from the higher MRD and use the resulting MRD

Question 20

The dental hygienist has already administered two cartridges of 2% lidocaine to a patient.The patient is reporting that he is not getting numb.What should the hygienist do at this time?

Accepted Answer

A)  Ask the dentist to administer more anesthetic solution. 
B)  Change to a different anesthetic solution. 
C)  Attempt to readminister the anesthetic,adjusting the technique. 
D)  Call the manufacturer to report a bad batch of anesthetic cartridges. 
A)  Ask the dentist to administer more anesthetic solution. 
B)  Change to a different anesthetic solution. 
C)  Attempt to readminister the anesthetic,adjusting the technique. 
D)  Call the manufacturer to report a bad batch of anesthetic cartridges.

Which of the following is the first step in calculating the additional dose of a different drug?

What is the formula for calculating the milligrams of anesthetic drug in 1 mL of the selected anesthetic?

What is the MRD of mepivacaine 3% for a 130-lb female patient?

MRD of the local anesthetic agent should be decreased for patients with medically compromised situations,the elderly patient,and children.The lowest effective dose should be administered to any of these patients.

For what kind of patient should the MRD of local anesthetic agents be decreased?

How many milligrams of lidocaine 2% 1:100,000 epinephrine may a healthy,200-lb patient receive?

Which of the following is the correct chart documentation for local anesthetic?

If a patient's MRD is 240 mg and 108 mg of 3% mepivacaine has already been administered,how much more mepivacaine can the patient receive?

What is the formula for calculating the milligrams of solution in one cartridge of the selected anesthetic?

If an anesthetic contains a vasoconstrictor,how is the maximum recommended dose determined?

Which anesthetic/vasoconstrictor combination is most likely to limit the anesthetic drug?

What is the number of milligrams per cartridge of 4% prilocaine?

What does the MRD depend on?

What is the MRD for epinephrine for a compromised patient?

What is the MRD of 1:100,000 epinephrine per appointment for a healthy patient?

What is the formula for calculating how many milligrams of anesthetic solution were administered?

How many milligrams of lidocaine 2% 1:100,000 epinephrine may a patient with ischemic heart disease receive?

If the dental hygienist were to administer two different local anesthetics,which MRD would she use?

The dental hygienist has already administered two cartridges of 2% lidocaine to a patient.The patient is reporting that he is not getting numb.What should the hygienist do at this time?

Local Anesthesia in Dental Hygiene Practice: an Introduction

Neurophysiology

Pharmacology of Local Anesthetic Agents

Pharmacology of Vasoconstrictors

Local Anesthetic Agents

Topical Anesthetic Agents

Preanesthetic Assessment

Armamentariumsyringe Preparation

Anatomic Considerations for the Administration of Local Anesthesia

Basic Injection Techniques

Maxillary Anesthesia

Mandibular Anesthesia

Local Anesthesia for the Child and Adolescent

Local Anesthetic Complications

Legal Considerations and Risk Management

Filters

Exam 8: Determining Drug Doses

Which of the following is the first step in calculating the additional dose of a different drug?

What is the formula for calculating the milligrams of anesthetic drug in 1 mL of the selected anesthetic?

What is the MRD of mepivacaine 3% for a 130-lb female patient?

MRD of the local anesthetic agent should be decreased for patients with medically compromised situations,the elderly patient,and children.The lowest effective dose should be administered to any of these patients.

For what kind of patient should the MRD of local anesthetic agents be decreased?

How many milligrams of lidocaine 2% 1:100,000 epinephrine may a healthy,200-lb patient receive?

Which of the following is the correct chart documentation for local anesthetic?

If a patient's MRD is 240 mg and 108 mg of 3% mepivacaine has already been administered,how much more mepivacaine can the patient receive?

What is the formula for calculating the milligrams of solution in one cartridge of the selected anesthetic?

If an anesthetic contains a vasoconstrictor,how is the maximum recommended dose determined?

Which anesthetic/vasoconstrictor combination is most likely to limit the anesthetic drug?

What is the number of milligrams per cartridge of 4% prilocaine?

What does the MRD depend on?

What is the MRD for epinephrine for a compromised patient?

What is the MRD of 1:100,000 epinephrine per appointment for a healthy patient?

What is the formula for calculating how many milligrams of anesthetic solution were administered?

How many milligrams of lidocaine 2% 1:100,000 epinephrine may a patient with ischemic heart disease receive?

If the dental hygienist were to administer two different local anesthetics,which MRD would she use?

The dental hygienist has already administered two cartridges of 2% lidocaine to a patient.The patient is reporting that he is not getting numb.What should the hygienist do at this time?

Local Anesthesia in Dental Hygiene Practice: an Introduction

Neurophysiology

Pharmacology of Local Anesthetic Agents

Pharmacology of Vasoconstrictors

Local Anesthetic Agents

Topical Anesthetic Agents

Preanesthetic Assessment

Armamentariumsyringe Preparation

Anatomic Considerations for the Administration of Local Anesthesia

Basic Injection Techniques

Maxillary Anesthesia

Mandibular Anesthesia

Local Anesthesia for the Child and Adolescent

Local Anesthetic Complications

Legal Considerations and Risk Management

Filters