lecture 3

Question 1

What are the three ADA criteria for LA syringes

Answer 1

Durable, capable of accepting variety of cartridges and needles, simple to use with one hand, and aspiration

Question 2

What are the five types of syringes

Answer 2

Breech-loading, self and non self aspirating, pressure type, needless type, and C-CLAD type

Question 3

Two benefits to pressure syringes?

Answer 3

Great for PDL and intaligamentary injections, gives extra pressure (for weaklings),

Question 4

Electronically controlled syringes benefits?

Answer 4

Control over quantity and speed, can administer anesthetic slowly, great for kids.

Question 5

Parts of a needle?

Answer 5

Bevel, shaft, hub, syringe adaptor (some threaded and non threaded), and cartridge penetration end.

Question 6

Three lengths of needles?

Answer 6

Ultra-short (10-12 mm for peds), short (20-25 mm), and long (30-35mm)

Question 7

What are the gauges? (Diameter)

Answer 7

25, 27 and 30 gauge, the smaller the number the wider the diameter

Question 8

When would you use a larger gauge needle?

Answer 8

if you think that tissue deflection would happen

Question 9

What does BRIT stand for and why is it important?

Answer 9

Bi-Rotational insertion technique and it is good for not getting deflections.

Question 10

Why do we aspirate?

Answer 10

To make sure we aren’t injecting into a vein or artery.

Question 11

What is the most common place of needle breakage?

Answer 11

the hub

Question 12

Smaller or larger gauge needles are more likely to break?

Answer 12

smaller

Question 13

Should needles penetrate through bone?

Answer 13

nope, not meant to

Question 14

Four parts of the cartridge (carpule)

1.8mL of anesthetic

Answer 14

glass tube, stopper, plunger, aluminum cap, rubber diaphragm

Question 15

What are the two LA that come plain? (No epi)

Answer 15

Prilocaine and mupivocaine

Question 16

How long do you have Topical on tissues?

Answer 16

60 seconds to two minutes

*alcohol can cause tissue irritation

Question 17

What are some local complications?

Answer 17

Needle break
paraesthesia or prolonged anesthesia
trismus
facial nerve paralysis
soft tissue injury
hematoma
pain or burning on injection
infection
Edema
oral lesion (post injection)

Question 18

Where is the most common location of needle breakage?

Answer 18

IA block

*short needles more than long

Question 19

What is paraesthesia?

Answer 19

numbness of the face.

Can resolve in about 8 weeks

Question 20

How long does facial nerve paralysis last?

Answer 20

A couple hours.

Question 21

What is Trismus?

Answer 21

Prolonged spasms of the jaw muscles - lock jaw.

From tainted LA

Question 22

What is a hematoma?

Answer 22

Knick of the artery or vein in the area.