WREB Local Anesthesia Study Guide latest

A patient complains of a lesion on the lower lip a day after LA administration, what is the most likely cause? - correct answersSelf mutilation A patient has received the IAN, lingual and long buccal injections for dental hygiene therapy in the mandibular right quadrant. The procedure has taken longer than expected and the patient is experiencing pain in the area. The injections are repeated, however, this time patient still expresses that the area remains sensitive. What is the name given to this clinical situation: - correct answerstachyphylaxis A patient with epilepsy is scheduled for root planing and scaling with local anesthetic today. What should the dental hygienist know about this condition? A. Epilepsy is a realtive contraindication to ester type anesthtetics B. In low doses local anesthetic is an anti-convulsant C. The patient should be pre-medicated prior to treatment D. Epilepsy is an absolute contraindication to amide type anesthetics E. Oxygen should be available to deliver in an emergency - correct answersIn low doses local anesthetic is an anti-convulsant A person's tidal volume is: the amount of air expired in a single breath the amount of air a person needs for one respiration cycle the total amount of air utilized in 1 minute the amount of oxygen a person needs while receiving nitrous oxide sedation - correct answersThe definition of tidal volume is the amount of air a person needs for one respiration cycle. After administering a left PSA injection to a patient, swelling becomes evident on the left side of her face within a few minutes. What has most likely occured to this patient - correct answersYes, the needle inadvertently nicked the pterygoid plexus of veins, causing this hematoma After administering a right inferior alveolar nerve (IAN) block to your patient, the first molar is still sensitive, even though the other teeth in the quadrant are numb. What could be the cause of this: - correct answersIn some individuals, the mylohyoid nerve provides accessory innervation to the first molar, usually the mesial portion of the tooth. After you have determined your patient's tidal volume (in this example, 6 liters of oxygen), at which rate would you introduce the nitrous oxide: 0.5 liters per minute 1.0 liters per minute 1.5 liters per minute 2.0 liters per minute 2.5 liters per minute - correct answersNitrous oxide should be introduced at the