1
The dental hygienist has already administered two cartridges of 2% lidocaine to a patient. The patient is reporting that he is not getting numb. What should the hygienist do at this time?
Attempt to readminister the anesthetic, adjusting the technique.
__________________ is not recommended for children because it will increase the risk of soft tissue injury.
Bupivicaine
What is the best way to avoid systemic toxicity when administering a local anesthetic solution?
Aspirate before injection.
Delayed signs and symptoms of an allergic reaction are 1)__________________ . If skin reactions develop immediately following the injection, anaphylaxis may occur.
1) more intense and serious
The onset of action of inhalation sedation by N2O-O2 is:
within 30 seconds; peaking at 5 minutes
Which of the following mandibular supplemental injections enters the alveolar bone?
Periodontal ligament Injection
Treatment of soft tissue injury includes applying 1) ________ on the day of the injury. The following day 2) _________ may be applied.
1) ice, 2) heat
When severe toxic overdose reaction occurs the proper treatment would be
administration of valium if seizures have not abated after 15 minutes of seizures.
When mild toxic overdose reaction occurs the proper treatment would be
protect patient, monitor vital signs and give oxygen.
How would you manage a patient experiencing angina pectoris?
Terminate procedure, position patient upright, monitor and record vital signs, administer oxygen and nitroglycerine for three doses or until pain is relieved
What usually causes the discomfort associated with the IA block?
Lingual Shock
What is phentolamine mesylate?
Alpha-adrenergic receptor antagonist
What does the clinician need to know about a possible epinephrine overdose?
Epinephrine overdose produces overstimulation of adrenergic receptors.
As you take your patient off nitrous oxide you ask him how he is feeling. Your patient tells you he has a headache, is feeling lethargic and sick to his stomach. What is he possibly experiencing?
Diffusion Hypoxia
Sudden weakness of one side, difficulty of speech, temporary loss of vision, and change in mental status
Stroke
What is the absolute maximum does for 4% prilocaine?
600mg
What could cause a burning sensation during the administration of local anesthetic?
Expired anesthetic solution
Possible contamination with disinfecting solution
Anesthetic placed in sunny window to warm gently
All of the above
Cardiovascular signs of toxicity of local anesthetic solution include which of the following?
Myocardial depression
Cardiac dysrhythmias
Cardiotoxicity in pregnancy
All of the above
True or False
Nausea and inadequate or complete sedation are common complications of N20
False
Are usually caused by high plasma concentrations of local anesthetic drugs that result from inadvertent intravascular injection, excessive dose, rate of injection, delayed drug clearance, or administration into vascular tissue
This is a systemic complication?
Local anesthesia systemic toxicity initially manifests as ___________ followed by ______________of the cardiovascular system and to a lesser extent of the central nervous system.
excitation, depression
What is the cause of a vasoconstrictor overdose?
Dose exceeded the patient’s maximum recommended dose
Recommended treatment of allergic reactions includes which of the following?
25- to 50-mg adult dose Benadryl for mild cutaneous reactions
1:1000 epinephrine for more serious reactions
60-mg methylprednisolone for severe allergic reactions
In many states, registered dental hygienists are allowed to administer nitrous oxide and oxygen.
True
May appear severe at the time of its observance but will eventually resolve without any residual effect
Transient complication