LA ch.11
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