CAA Physiology and Pathophysiology in Anesthesia

Question 1

How does anesthesia affect the cardiovascular system?

Accepted Answer

Decreases blood pressure due to vasodilation

Answer

Most anesthetic agents cause vasodilation and myocardial depression, leading to a decrease in blood pressure.

Question 2

Which organ system is most affected by anesthetic agents during surgery?

Accepted Answer

Respiratory system

Answer

The respiratory system is heavily influenced by anesthesia, as many agents depress respiratory function and require ventilatory support.

Question 3

What is the primary cause of malignant hyperthermia?

Accepted Answer

Uncontrolled calcium release in muscle cells

Answer

Malignant hyperthermia is caused by a genetic mutation that results in excessive calcium release in muscle cells in response to certain anesthetics.

Question 4

Why do some anesthetic agents cause respiratory depression?

Accepted Answer

They depress the central respiratory centers

Answer

Many anesthetics act on the central nervous system by depressing respiratory centers in the brainstem, reducing respiratory rate and tidal volume.

Question 5

What is the physiological response to hypoxia during anesthesia?

Accepted Answer

Increase in heart rate and respiratory rate

Answer

Hypoxia triggers an increase in heart rate and respiratory rate to compensate for decreased oxygen levels in the blood.

(CAA) Certified Anesthesiologist Assistant Practice Test