ABA Fundamentals & Core Concepts 2

Question 1

Which receptor subtype mediates the analgesic effects of opioids at the spinal cord level?

Accepted Answer

Mu (μ) receptor

Answer

Mu (μ) receptors are the primary mediators of spinal analgesia, respiratory depression, and euphoria produced by opioids.

Question 2

The Fick principle for cardiac output calculation requires measurement of which variables?

Accepted Answer

Oxygen consumption, arterial O2 content, and venous O2 content

Answer

The Fick principle states that cardiac output equals oxygen consumption divided by the arteriovenous oxygen content difference.

Question 3

Which property of local anesthetics determines their potency?

Accepted Answer

Lipid solubility

Answer

Lipid solubility is the primary determinant of local anesthetic potency, as it determines membrane penetration and receptor binding affinity.

Question 4

During inhalation anesthesia, the blood:gas partition coefficient primarily determines:

Accepted Answer

Speed of induction and recovery

Answer

A lower blood:gas partition coefficient means less agent must dissolve in blood before equilibrium with alveolar gas is achieved, resulting in faster induction and recovery.

Question 5

Which of the following best describes the mechanism of action of non-depolarizing neuromuscular blocking agents?

Accepted Answer

Competitive antagonism at the nicotinic acetylcholine receptor

Answer

Non-depolarizing NMBAs competitively block nicotinic acetylcholine receptors at the motor end plate without activating them.

(ABA) ASA (American Society of Anesthesiologists) Board Certification Practice Test

(ABA) ASA (American Society of Anesthesiologists) Board Certification Practice Test

ABA Fundamentals & Core Concepts 2