Basic Anatomy of Local Injection Flashcards
What are the 3 types of injections?
Infiltration
Field Block
Nerve Block
What is an infiltration injection?
AKA Supraperiosteal
Involve deposition directly at or near small terminal nerve endings in the immediate area of treatment
What is a field block injection?
Involve depositions near larger terminal nerve branches
What is a nerve block injection?
Involve depositions near major nerve trunks at a greater distance from the area of treatment which provide wider areas of anesthesia
Key terms relevant to basic injection steps:
Penetration site
Needle Pathway
Deposition site
What must we do when considering administration of local anesthesia?
Consider precautions and contraindications
Identify necessary modifications
Select appropriate techniques and anesthetics
What is included in informed consent?
In a language patients can understand Provide opportunity for questions Explain procedures and the need for them Clarify risk/rewards including risks if failing to treat Provide acceptable alternatives
What are the 10 basic steps of injection guidelines?
Pre-injection patient assessment Informed Consent Assemble armamentarium Pre-injection prep Prepare injection site Initiate injection Aspiration Deposition and Rate Completion of Injection Documentation
Why must the large window be facing us during an injection?
Monitor outcome of: aspirations, delivery rate, dose of drug deposited
What do we do during pre-injection preparation?
Supportive communication
PREP: prepare, rehearse, empower, praise
What do we do when preparing the injection site?
Rehearse and Topical
Visualize angle of injection and rehearse approach with cotton swab
Maintaining angle, place topical at penetration site
What do we do when initiating the injection?
Pull mucosa taut
Initiate penetration slowly at the height of the mucobuccal fold
What is the injection technique for the initial approach?
Stable retraction
Palm-up grasp
Thumb positioned for effective aspiration
Confirm cartridge drug color ID
Clear vision of large window and rubber stopper
When are we likely ot encounter premature contact with alveolar bone during injections?
When the angle of the needle is too steep and the height of penetration is too low
What do we do during the aspiration step?
Thumb placed at the height/back of thumb loop on syringe
After penetration pull back slightly on thumb ring then rotate syringe slightly and pull back a second time
