Free MAC Anesthetic Techniques & Equipment Usage Questions and Answers

Question 1

What is the purpose of preoxygenation before induction of anesthesia?

Accepted Answer

Increase oxygen reserves

Answer

Preoxygenation, typically achieved by administering 100% oxygen for several minutes before induction of anesthesia, aims to denitrogenate the patient's functional residual capacity (FRC) and replace it with oxygen. This significantly increases the body's oxygen reserves, providing a longer period of safe apnea during induction and intubation. This extended 'apneic window' helps delay the onset of hypoxemia, enhancing patient safety.

Question 2

Which device is commonly used to deliver volatile anesthetics?

Accepted Answer

Vaporizer

Answer

A vaporizer is a precision device integrated into an anesthesia machine that converts liquid volatile anesthetics into a gaseous form. It accurately controls the concentration of these anesthetic vapors, mixing them with carrier gases like oxygen, for safe and controlled delivery to the patient's lungs. This ensures the desired level of anesthesia is maintained throughout the procedure.

Question 3

Which regional anesthesia technique blocks a specific peripheral nerve?

Accepted Answer

Peripheral nerve block

Answer

A peripheral nerve block is a regional anesthesia technique where local anesthetic is injected directly around a specific nerve or group of nerves (plexus). This targeted injection numbs the particular body region or limb supplied by that nerve, providing localized pain relief without affecting the patient's consciousness. It is distinct from spinal or epidural anesthesia, which block nerves within the spinal canal.

Question 4

What is the function of the anesthesia breathing circuit?

Accepted Answer

Deliver anesthetic gases

Answer

The anesthesia breathing circuit is a vital component of the anesthesia delivery system. Its primary function is to transport a precisely controlled mixture of anesthetic gases and oxygen from the anesthesia machine to the patient's airway. It also facilitates the removal of exhaled carbon dioxide and allows for controlled ventilation, ensuring continuous gas exchange and maintenance of the anesthetic state.

Question 5

Which technique involves injecting anesthetic into the subarachnoid space?

Accepted Answer

Spinal anesthesia

Answer

Spinal anesthesia is a regional anesthesia technique that involves injecting a local anesthetic directly into the subarachnoid space, which surrounds the spinal cord and contains cerebrospinal fluid. This injection produces rapid and profound sensory and motor blockade below the level of administration. It is commonly used for surgical procedures on the lower extremities, abdomen, and perineum.

MAC - Maintaining Anesthesia Certification Practice Test

MAC - Maintaining Anesthesia Certification Practice Test

Free MAC Anesthetic Techniques & Equipment Usage Questions and Answers