Pharmacology of Anesthetics: Online Quizzes and Learning Resources

Question 1

Which mechanism primarily underlies the action of local anesthetics on nerve conduction?

Accepted Answer

Block sodium channels

Answer

Open potassium channels

Answer

Block calcium channels

Answer

Enhance neurotransmitter release

Question 2

How do general anesthetics work?

Accepted Answer

They reduce activity in the central nervous system, leading to unconsciousness.

Answer

They relieve pain without affecting awareness.

Answer

They are mainly used for short surgeries.

Answer

They have no effect on the heart and blood vessels.

Question 3

What is the predominant mechanism of action of general anesthetics?

Accepted Answer

Potentiation of GABAA-mediated inhibition

Answer

Blockade of NMDA receptors

Answer

Enhancement of dopamine release

Answer

Activation of potassium channels

Question 4

Out of the following, which is a local anesthetic?

Accepted Answer

Lidocaine

Answer

Ketamine

Answer

Propofol

Answer

Sevoflurane

Question 5

What is the most prevalent adverse effect of sedatives?

Accepted Answer

Respiratory depression

Answer

Hypotension

Answer

Seizures

Answer

Nausea

Question 6

What is the key difference between a volatile and an intravenous anesthetic?

Accepted Answer

Volatile anesthetics are inhaled, while intravenous anesthetics are injected.

Answer

Volatile anesthetics are more potent than intravenous anesthetics.

Answer

Intravenous anesthetics have a shorter duration of action than volatile anesthetics.

Answer

Volatile anesthetics are safer than intravenous anesthetics.

Question 7

What is the primary role of opioids in anesthesia?

Accepted Answer

To provide analgesia

Answer

To induce sleep

Answer

To relax muscles

Answer

To prevent nausea and vomiting

Question 8

What is the primary mechanism of action of muscle relaxants?

Accepted Answer

Blockade of acetylcholine receptors at the neuromuscular junction

Answer

Enhancement of GABA release

Answer

Inhibition of sodium channels

Answer

Activation of potassium channels

Question 9

Which of the following is NOT a factor to consider when selecting an anesthetic for a patient?

Accepted Answer

Patient preference

Answer

Age

Answer

Weight

Answer

Medical history

Question 10

Which local anesthetic is known for its long duration of action and is commonly used for procedures such as epidurals and peripheral nerve blocks?

Accepted Answer

Bupivacaine

Answer

Lidocaine

Answer

Prilocaine

Answer

Ropivacaine

Question 11

Which condition is a contraindication to the use of succinylcholine?

Accepted Answer

Hyperkalemia

Answer

Asthma

Answer

Bradycardia

Answer

Hypertension

Question 12

Which of the following is a potential adverse effect associated with the use of opioids in anesthesia?

Accepted Answer

Respiratory depression

Answer

Hypertension

Answer

Tachycardia

Answer

Bronchodilation

Question 13

Which technique is used to administer volatile anesthetics?

Accepted Answer

Inhalation

Answer

Intravenous infusion

Answer

Topical application

Answer

Epidural injection

Question 14

Which class of anesthetics interacts with specific receptors on the GABA-A receptor complex?

Accepted Answer

Benzodiazepines

Answer

Opioids

Answer

Volatile anesthetics

Answer

Local anesthetics

Question 15

Which of the following drugs is commonly used as a reversal agent for opioid-induced respiratory depression?

Accepted Answer

Naloxone

Answer

Atropine

Answer

Flumazenil

Answer

Physostigmine

Question 16

What is a contraindication to the use of benzodiazepines?

Accepted Answer

Pregnancy

Answer

Epilepsy

Answer

Renal impairment

Answer

Asthma

Question 17

Which of the following is a common adverse effect of propofol?

Accepted Answer

Apnea

Answer

Thrombocytopenia

Answer

Tachycardia

Answer

Hypertension

Question 18

Which of the following techniques is used to administer local anesthesia for dental procedures?

Accepted Answer

Infiltration anesthesia

Answer

General anesthesia

Answer

Epidural anesthesia

Answer

Spinal anesthesia

Question 19

What is a potential complication of spinal anesthesia?

Accepted Answer

Post-dural puncture headache

Answer

Bradycardia

Answer

Hypertension

Answer

Nausea and vomiting

Question 20

Which of the following is a characteristic of an ideal anesthetic agent?

Accepted Answer

Rapid onset and offset of action

Answer

Low cost

Answer

Long duration of action

Answer

No adverse effects

Question 21

Which of the following is a selective antagonist of GABA receptors?

Accepted Answer

Flumazenil

Answer

Naloxone

Answer

Neostigmine

Answer

Atropine

Question 22

Which of the following is a potential risk associated with the use of ketamine?

Accepted Answer

Emergence delirium

Answer

Neurotoxicity

Answer

Hepatotoxicity

Answer

Cardiotoxicity