Question 1

Which of the following influences the amount of local anesthetic agent in the systemic circulation?

Accepted Answer

All of the options listed can influence the amount of local anesthetic agent in the systemic circulation. Administration technique can affect the rate and extent of absorption of the drug, the body's ability to metabolize the drug can determine how quickly it is eliminated, and the ability of the kidneys to excrete any unmetabolized drug can also affect the amount of drug remaining in the body. Therefore, all options listed are important factors in determining the systemic effects of a local anesthetic agent.

Question 2

Which of the following should you consider regarding the use of vasoconstrictors for patients who present with hypothyroidism?

Accepted Answer

Patients with hypothyroidism are not directly contraindicated for the use of vasoconstrictors. However, uncontrolled hyperthyroidism is an absolute contraindication. Patients with hypothyroidism may still be at risk of developing thyrotoxicosis with the use of vasoconstrictors, especially in uncontrolled cases. When controlled, a cardiac dose of vasoconstrictors is permitted. Therefore, all options listed should be considered when using vasoconstrictors in patients with hypothyroidism.

Question 3

Which of the following are signs of anxiety and fear?

Accepted Answer

All of these options are signs of anxiety and fear. When someone is anxious or afraid, their body activates the "fight or flight" response, which can cause increased heart rate, elevated blood pressure, cold sweats, and paleness of skin.

Question 4

The most common procedure for assessing the pulse rate is to palpate the brachial artery.Bradycardia is an abnormally elevated heart rate and may be a sign of cardiovascular disease or anxiety.

Accepted Answer

The most common procedure for assessing the pulse rate is to palpate the radial artery, not the brachial artery. Bradycardia is an abnormally slow heart rate, not elevated. Tachycardia refers to an abnormally elevated heart rate.

Question 5

Which of the following describes digitalis glycosides?

Accepted Answer

Digitalis glycosides are used for the treatment of congestive heart failure and can increase the potential for cardiac arrhythmias when combined with epinephrine, making all the listed options correct.

Question 6

What is the best reason for the relative contraindication to amide local anesthetics for patients with liver disease?

Accepted Answer

Biotransformation of amide local anesthetics occurs primarily in the liver, and patients with liver dysfunction may have impaired clearance of the drug, leading to increased risk of toxicity.

Question 7

Local anesthetics administered during pregnancy are not teratogenic and pose little danger to the fetus.Pregnant women can receive dental hygiene care with anesthesia in any trimester,in consultation with the patient's physician.

Accepted Answer

Both statements are true. Local anesthetics do not appear to be teratogenic and are considered safe to use during pregnancy. Pregnant women can receive dental hygiene care with anesthesia in any trimester, but it is important to consult with the patient's physician to ensure there are no contraindications or special considerations.

Question 8

Few health conditions absolutely contraindicate the administration of vasoconstrictors.Patients with uncontrolled systemic disease are not normally seen for nonsurgical periodontal therapy.

Accepted Answer

Few health conditions, such as certain cardiovascular diseases, absolutely contraindicate the use of vasoconstrictors. Patients with uncontrolled systemic diseases are typically not treated with nonsurgical periodontal therapy due to the potential risks involved.

Question 9

Which of the following statements is the correct consideration regarding the use of amide local anesthetic plus vasoconstrictor in treating a patient with a known bleeding disorder?

Accepted Answer

When treating a patient with a known bleeding disorder, the greatest concern is the risk of a positive aspiration due to potential bleeding in the area. Therefore, it is important to use proper aspiration techniques and to have appropriate measures in place in case of bleeding. The use of vasoconstrictor can be beneficial in limiting bleeding, but it should be used at a lower concentration than normal and with caution. The choice of amide versus ester local anesthetic is not the main concern in this situation.

Question 10

Adequate pain control is essential to provide thorough nonsurgical periodontal therapy.Thorough pain control is best accomplished by the administration of local anesthetics.

Accepted Answer

Both statements are true. Adequate pain control is indeed essential for nonsurgical periodontal therapy, and local anesthetics are indeed the best way to achieve thorough pain control in this context.

Question 11

All of the following are true regarding phenothiazines EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

Phenothiazines are known for their alpha-blocking properties, which can lead to a decrease in blood pressure rather than an increase. Therefore, they are more likely to counteract hypertension rather than cause it.

Quiz 7: Preanesthetic Assessment