RDA exam 1 question with complete solution graded A+ already passed 2023

RDA exam 1 question with complete solution graded A+ already passed 2023 What is the ingredient in the local anesthetic solution that has the ability to prolong the effect of the anesthetic by decreasing the blood flow in the immediate area of the injection? - correct answer vasoconstrictor Aspirin is considered to be an: - correct answer mild analgestic When disassembling the local anesthetic syringe, where is the contaminated needle discarded? - correct answer sharps container why is the aspirating syringe used in the administration of local anesthetic? - correct answer To avoid injecting into a blood vessel A patient's medical history indicates that the patient has a prosthetic heart valve. Because of a higher incidence for a bacterial colonization what medication will commonly be prescribed for this patient? - correct answer antibiotic for employee safety all nitrous oxide units should be equipped with a: - correct answer Scavenger system which may be prescribed for a patient to reduce patient fears and tension? - correct answer anti anxiety agent When should the needle guard be removed? - correct answer By the operator just before injection, After the syringe has been placed in the operators hand when the syringe is prepared how long does a short acting local anesthetic last? Less than: - correct answer 30 minutes