CDCA local anesthesia exam review UPDATED ACTUAL Questions and CORRECT Answers
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Course
CDCA local anesthesia
Institution
CDCA Local Anesthesia
CDCA local anesthesia exam review
UPDATED ACTUAL Questions and
CORRECT Answers
which has thicker cortical plate, maxillary or mandibular? - CORRECT ANSWER-
mandibular (this decreased the amount of the local anesthesia molecules that can
penetrate to nerves during infiltration injections)
du...
CDCA local anesthesia exam review
UPDATED ACTUAL Questions and
CORRECT Answers
which has thicker cortical plate, maxillary or mandibular? - CORRECT ANSWER-
✔✔mandibular (this decreased the amount of the local anesthesia molecules that can
penetrate to nerves during infiltration injections)
due to the thickness of cortical bone, which is a good option for local anesthetic in the
mandibular arch during infiltrations? - CORRECT ANSWER- ✔✔Articaine (Septocaine) is
sometimes effective for mand. infiltrations (4% vs. 2% for lidocaine) due to the increased
number of molecules
hematomas are most common with which type of injection, and why? - CORRECT
ANSWER- ✔✔PSA due to nicking a vessel in the pterygoid plexus of veins
what is the TX for a hematoma? - CORRECT ANSWER- ✔✔pressure, cold compresses
on/off, NSAIDS, and time.
a positive aspiration when administering a PSA is due to what? - CORRECT ANSWER-
✔✔aspirating hemorrhage caused by injection
what are the three most common locations for hematomas to occur? - CORRECT ANSWER-
✔✔1. PSA
2. IA
3. mental
blanching of the tissue following/during an injection is caused by what? - CORRECT
ANSWER- ✔✔vasospasm/vasoconstriction caused by epinephrine or brushing against
autonomic nerves stimulation vasospasm
the pterygomandibular space/triangle is bordered by what anatomical structures? -
CORRECT ANSWER- ✔✔ramus, lateral pterygoid muscle, and medial pterygoid muscle
, the pterygomandibular space/triangle is identified intra-orally by what? - CORRECT
ANSWER- ✔✔pterygoid hamulus (palpation), coronoid notch (palpation), and
pterygomandibular raphe (visual)
the mandibular foramen lies approx. __________________________ of the distance from the
anterior border of the ramus to the posterior border - CORRECT ANSWER- ✔✔1/2 to 2/3
Antero-posteriorly, the greater palatine foramen is located between the
___________________________. - CORRECT ANSWER- ✔✔middle oft he maxillary
second molar and the middle of the third molar in about 80-90% of patients.
all arteries leading to the oral cavity receive blood from what? - CORRECT ANSWER-
✔✔external carotid (most are direct or indirect branches from the maxillary artery with the
exception of the lingula -- this is a direct branch from the external carotid)
veins from the oral cavity will drain into what? - CORRECT ANSWER- ✔✔internal jugular
(both internal and external drain into the brachiocephalic veins which drain to the superior
vena cava
do myelinated or un-myelinated nerves create faster impulse? - CORRECT ANSWER-
✔✔myelinated (impulses jump from node to node -- node of ranvier)
what is saltatory conduction? - CORRECT ANSWER- ✔✔the process of nerve impulses
jumping from nodes of ranvier along a myelinated nerve
what is the resting potential charges of a nerve? - CORRECT ANSWER- ✔✔inside is
negative and outside is positive
what molecules are predominately outside/inside at resting potential? - CORRECT
ANSWER- ✔✔Na+ outside and K+ inside
what is depolarization? - CORRECT ANSWER- ✔✔Na+ channels open , Na+ flows in
reversing polarity; K+ flows out to restore neutrality; the Na+ and K+ pumps restore polarity
(resting potential)
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