LA ch.11

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false negative

aspiration can occur when a bevel is in contact with a vessel wall

nerve block

injection deposits local anesthetic near major nerve trunks at a greater distance from the area of treatment which provides wider areas of anesthetic

field block

injection deposits local anesthetics near larger terminal nerve branches

deposition site

is defined as the anatomical location at which a drug is deposited

I min

most topical anesthetic agents will reach peak effectiveness in

aspiration

reduce the risk of inadvertent deposition of drugs into the bloodstream

needle pathway

refers o the route a needle travels as it advances to what may be referred to as a target site

false

regardless of the amount of blood in the cartridge following a positive aspiration the best practice is to withdraw the syringe and reinject

false

resting an elbow on a patients shoulder of chest during injection creates good stabilization and is safe ergonomic practice

penetration site

specific location where a needle first pierces mucosa

recap

the final safety step during an injection procedure is to properly _ the needle prior to disposal

deviation

the greater the distance from the penetration site to the deposition site, the greater the potential for _ of the needle tip

true

the most stable position fr the syringe is palm up

true

the safest rate of deposition of local anesthetics allows for the delivery of 1ml of solution per minute. this means it requires about two min to deposit a 1.8ml cartridge of anesthetic solution. one minute for one cartridge is acceptable

aspiration and rate of delivery

the two most important safety steps in the delivery of local aesthetic agents are

local infiltration superperiosteal

deposits local anesthetics near larger terminal nerve branches

supportive communication

efforts to reduce stress from the beginning to the end of an injection are enhanced by maintaining positive

to reduce trauma to periosteum when bone is contacted

what is primary reason a needle bevel is oriented toward bone during injection

it allows for ease of needle penetration and establishes a point of stability for the syringe

which statement best describes why retraction of tissue keeping the tissue taut is important during injections

rotating the syringe slightly a quarter turn and respirating will release the bevel from a vessel wall

which statement correctly describes a false negative aspiration

toward the clinical to permit visibility throughout the injection

which statement describes the correct positioning of he long window of the syringe


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