WREB Local Anesthesia UPDATED Exam
Questions and CORRECT Answers
*LOCAL ANESTHESIA COMPLICATIONS + RELATED MEDICAL CONDITIONS (LA)* -
CORRECT ANSWER -
*Lesson 1* Local Complications - CORRECT ANSWER -
Needles usually fracture at the ____ which is the weakest part - CORRECT ANSWER -
hub
Name causes of a needle breaking - CORRECT ANSWER - -sudden movement by patient
*(MOST COMMON)*
-insertion of the needle *all the way to the hub*
-*bending* of needle before insertion
-*change of needle direction* during penetration
What do you do if the needle needs to be re-positioned? - CORRECT ANSWER - retrieve
it fully and reinsert it
What injections are must common for the needle to break during? - CORRECT
ANSWER - IA or PSA
What can you do to prevent needle breakage during the IA nerve block? - CORRECT
ANSWER - -use long needle w/ smaller gauge
-do not insert it all the way to hub
The _______ (or _______) should be available at all times for retrieval if broken needle is visible
- CORRECT ANSWER - hemostat (or locking cotton pliers)
,How soon should you refer a patient if the needle broke and is not visible? - CORRECT
ANSWER - immediately
Define Paresthesia - CORRECT ANSWER - anesthesia or altered sensation persisting
beyond the expected duration of anesthesia
When does paresthesia occur? - CORRECT ANSWER - when a nerve is pressured or
irritated
What is paresthesia caused by? - CORRECT ANSWER - -contaminated alcohol or
sterilization solution
-hemorrhage (bleeding) in or around the nerve
-damage to the nerve by the needle during injection
What "side effects" can paresthesia case? - CORRECT ANSWER - -pain
-numbness
-tingling
-swelling
-itchiness
-loss of taste
-drooling
-speech impairment
sometimes paresthesia *cannot* be ________? - CORRECT ANSWER - prevented
Symptoms usually disappear on their own within ___ weeks - CORRECT ANSWER -8
Define Facial Nerve Paralysis - CORRECT ANSWER - loss of motor function of the
facial expressions
, When does FNP occur - CORRECT ANSWER - when the anesthetic is deposited into the
*PAROTID GLAND*
-b/c facial nerves pass through the parotid gland
What is FNP characterized by? - CORRECT ANSWER - "droopy face"
How do you manage the condition? - CORRECT ANSWER - -remove contact lens
-manually close eyelid or apply eye patch on affected side until muscle tone returns
How can you prevent FNP? - CORRECT ANSWER - ensure the needle *contacts bone*
before solution is deposited during IA
Define Hematoma - CORRECT ANSWER - outflow of blood into extravascular spaces
What is hematoma caused by? - CORRECT ANSWER - damaged blood vessels
What can hematomas cause? - CORRECT ANSWER - trismus, swelling, pain, and
*discoloration* (blue/purple hue
What dictates how the hematoma develops? - CORRECT ANSWER - density of the tissue
-denser tissue: limited spread of hema.
-looser tissue: more severe spread of hema. due to large amounts of blood collecting in/b/w
tissues
How do you prevent hematomas? - CORRECT ANSWER - -select a needle that is less
likely to penetrate structures deeper than the target area
-minimize the # of needle penetrations
Questions and CORRECT Answers
*LOCAL ANESTHESIA COMPLICATIONS + RELATED MEDICAL CONDITIONS (LA)* -
CORRECT ANSWER -
*Lesson 1* Local Complications - CORRECT ANSWER -
Needles usually fracture at the ____ which is the weakest part - CORRECT ANSWER -
hub
Name causes of a needle breaking - CORRECT ANSWER - -sudden movement by patient
*(MOST COMMON)*
-insertion of the needle *all the way to the hub*
-*bending* of needle before insertion
-*change of needle direction* during penetration
What do you do if the needle needs to be re-positioned? - CORRECT ANSWER - retrieve
it fully and reinsert it
What injections are must common for the needle to break during? - CORRECT
ANSWER - IA or PSA
What can you do to prevent needle breakage during the IA nerve block? - CORRECT
ANSWER - -use long needle w/ smaller gauge
-do not insert it all the way to hub
The _______ (or _______) should be available at all times for retrieval if broken needle is visible
- CORRECT ANSWER - hemostat (or locking cotton pliers)
,How soon should you refer a patient if the needle broke and is not visible? - CORRECT
ANSWER - immediately
Define Paresthesia - CORRECT ANSWER - anesthesia or altered sensation persisting
beyond the expected duration of anesthesia
When does paresthesia occur? - CORRECT ANSWER - when a nerve is pressured or
irritated
What is paresthesia caused by? - CORRECT ANSWER - -contaminated alcohol or
sterilization solution
-hemorrhage (bleeding) in or around the nerve
-damage to the nerve by the needle during injection
What "side effects" can paresthesia case? - CORRECT ANSWER - -pain
-numbness
-tingling
-swelling
-itchiness
-loss of taste
-drooling
-speech impairment
sometimes paresthesia *cannot* be ________? - CORRECT ANSWER - prevented
Symptoms usually disappear on their own within ___ weeks - CORRECT ANSWER -8
Define Facial Nerve Paralysis - CORRECT ANSWER - loss of motor function of the
facial expressions
, When does FNP occur - CORRECT ANSWER - when the anesthetic is deposited into the
*PAROTID GLAND*
-b/c facial nerves pass through the parotid gland
What is FNP characterized by? - CORRECT ANSWER - "droopy face"
How do you manage the condition? - CORRECT ANSWER - -remove contact lens
-manually close eyelid or apply eye patch on affected side until muscle tone returns
How can you prevent FNP? - CORRECT ANSWER - ensure the needle *contacts bone*
before solution is deposited during IA
Define Hematoma - CORRECT ANSWER - outflow of blood into extravascular spaces
What is hematoma caused by? - CORRECT ANSWER - damaged blood vessels
What can hematomas cause? - CORRECT ANSWER - trismus, swelling, pain, and
*discoloration* (blue/purple hue
What dictates how the hematoma develops? - CORRECT ANSWER - density of the tissue
-denser tissue: limited spread of hema.
-looser tissue: more severe spread of hema. due to large amounts of blood collecting in/b/w
tissues
How do you prevent hematomas? - CORRECT ANSWER - -select a needle that is less
likely to penetrate structures deeper than the target area
-minimize the # of needle penetrations
