Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

SP18: Local Anesthesia > Final > Flashcards

Final Flashcards

1
Q

T/F: A second cartridge for an IAN/lingual and buccal injections is useful.

A

False

Reinjection after 5 minutes is useful

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are some secondary techniques to numbing the anterior mandible?

A
  1. Anterior infiltration
  2. Mental block
  3. PDL injection
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

T/F: Each cartridge contains 1.7 ml of solution.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

T/F: Each 1% of LA is 10mg/ml.

A

True

1.7 ml solution of 2% lidocaine = 34 mg/cartridge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

T/F: A 1:100,000 solution contains 0.01 mg/ml.

A

True

1.7 ml of 1:100,000 epi solution = .017mg of epinephrine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the adult and pediatric maximum dose of mepivacaine?

A

Adult - 400 mg

Child - 6.6 mg/kg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the adult and child max dose of 2% lidocaine (1:100,000)?

A

Adult - 500mg

Child - 7mg/kg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

T/F: The maximum doses of articaine and lidocaine are the same.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is different about most articaine local anesthetics vs lidocaine?

A

Lidocaine is a 2% solution while articaine is a 4% solution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

T/F: Mepivacaine has a short acting time.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which local anesthesia has the longer acting time?

A

0.5% Bupivacaine (1:200,000)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the adult and child maximum dose of bupivacaine?

A

Adult - 90mg

Child - 2mg/kg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How many cartridges of 2% lidocaine would it be safe to give an adult?

A

14 cartridges

2% solution = 20mg/ml
20mg/ml x 1.7ml/cartridge = 34 mg/cartridge

500 mg/34mg = 14 cartridges

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the suggested maximum dose of epinephrine for a healthy adult? One with severe hypertension/cardiac disease?

A
  1. 2 mg - healthy

0. 04mg - unhealthy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the safe dose of epinephrine for a healthy 70 kg adult patient with 1:100,000 epinephrine solution?

A

11 cartridges

Maximum = 0.2mg = 20 ml in 1:100,000 solution

20ml/1.7ml cartridge = 11 cartridges

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How many ml of a 1:100,000 epinephrine can an unhealthy adult have?

A

4ml = 2 cartridges

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

T/F: Articaine is safe to use for a mandibular block.

A

False

Possible for mandibular infiltration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are three methods of intra-Osseous anesthesia?

A
  1. Periodontal ligament injection
  2. Intra-septal injection
  3. Intra-Osseous injection
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Interligamentary injection is another term for _________.

A

PDL injection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What area is anesthetized during a PDL injection?

A

Bone, soft tissue, apical and pulpal tissues

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

T/F: A PDL injection should be given with the long axis of the tooth, with the bevel on the root.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What are two signs that you are in the right spot for a PDL injection?

A
  1. Resistance to deposition

2. Ischemia (blanching) of tissue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How much LA is deposited for a PDL injection?

A

0.2 ml (one stopper length) in 20 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are two contraindications for a PDL injections?

A
  1. Infection/inflammation at site

2. Presence of primary teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
T/F: The PDL injection is used when you only have a partially successful IAN.
True
26
What can happen from excessive pressure on the cartridge?
Break the glass
27
Where is the target area for an intra-septal injection?
Center of interdental papilla equidistant from adjacent teeth
28
What angle to you hold the needle at for an intra-septal injection?
45 degrees to long axis of tooth 90 degrees to the tissue
29
How much anesthetic is given for an intra-septal injection?
0.2-0.4 ml
30
T/F: Intra-Osseous injections are given into the inter proximal bone between two teeth.
True
31
How long does it take for pulpal anesthesia to take place with intra-Osseous injections?
15-30 minutes
32
T/F: Intra-Osseous injections involve drilling a whole into the bone.
True
33
T/F: Palpitations are a more likely side effect of intra-Osseous injections.
True
34
What teeth are indicated for an intra-pulpal injection?
Teeth ready for RCT
35
T/F: Intra-pulpal injection technique uses pressure as part of the anesthesia technique.
True
36
Articaine contains a _________ instead of a benzene ring like other amide LAs?
Thiophene ring
37
T/F: Articaine contains an extra ester linkage.
True
38
What is a downside about using a 4% solution instead of a 2% solution?
Higher chance of parasthesia
39
T/F: Soft tissue testing is a good indicator of pulpal anesthesia.
False Electric pulp test or Endo-Ice (cold refrigerant)
40
Electronic pulp testing readings less than _______ resulted in pain during restorative procedures.
80 Reading must be 80 or above to indicate pulpal anesthesia
41
T/F: Lip numbness is indicative of pulpal anesthesia.
False
42
What is articaine useful for in anesthesia?
Mandibular infiltration
43
T/F: There does seem to be more complications (parasthesia) with articaine.
True
44
T/F: The Gow-Gates and Vazirani-Akinosi is superior to IA block.
False
45
T/F: Two cartridges in an IA block are preferred due to better pulpal anesthesia.
False Better soft tissue, no effect on pulp
46
What is the effect of buffering anesthetic solutions?
Faster onset and less pain on injection - but probably not
47
T/F: Injecting more slowly results in better anesthetic results.
True
48
T/F: If a patient has profound lip numbness, but no pulpal anesthesia, you should repeat the block.
False Move on to supplemental techniques
49
Which injections are most vulnerable to needle breaking?
IA block and PSA
50
How do you prevent needle breakage?
Don’t use short or 30 gauge needles, do not bend needle
51
What should you do if there is a needle breakage?
Refer to OMFS
52
What are the top 3 causes of parasthesia?
1. Direct nerve injury 2. Contaminated LA 3. LA itself (articaine)
53
How do you manage a patient with parasthesia?
Record the incident and watch for 2-3 weeks, if no improvement refer to OMFS
54
How do you avoid facial nerve paralysis when giving IA block?
Ensure bone contact on medial side of ramus
55
Multiple injections to the muscles can cause _________.
Trismus
56
If the patient has trismus for over 48 hours what should be suspected?
Infection
57
T/F: Infection from local anesthesia is extremely rare.
True
58
T/F: Local anesthetics exert a single action and are non-toxic.
False No drug has these qualities
59
What is biotransformation?
Esters hydrolyzed by pseudocholinesterase into PABA in plasma/liver Amides bio-transformed by liver enzymes
60
Which injection gives the highest percentage of positive aspirates?
IA block (12%)
61
What are some signs of a LA overdose?
Talkativeness, slurred speech, metallic taste, twitching
62
What is the first sign of moderate to high LA overdose?
Tonic-clonic seizure activity
63
What is always the first step when an LA overdose is recognized?
Stop treatment
64
T/F: O2 should be administered if a patient is suspected to have an LA overdose.
True
65
T/F: Benadryl can be prescribed for a patient who has a skin reaction to LA.
True
66
T/F: Epinephrine can be administered for a bronchial constriction or laryngeal edema reaction.
False

SP18: Local Anesthesia (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions