Exam 2- Positioning and Breathing System Pre-Test

Question 1

The preferred location of the fresh gas inlet is between:

Answer 1

• between the absorbent and the inspiratory valve.

Question 2

Which is MOST LIKELY to occur with the degradation of sevoflurane by absorbent?

A. More degradation occurs at lower temperatures

B. More degradation occurs with lower concentrations

C. Desiccated absorbent decreases degradation

D. It is degraded more as the length of the anesthetic increases

Answer 2

D. It is degraded more as the length of the anesthetic increases

Compound A formation occurs with:
* Low FGF
* Absorbents containing potassium or sodium hydroxide
* Increased absorbent temperature
* Higher sevoflurane concentrations
* Longer anesthetics
* Dehydrated absorbent

Question 3

Which position is contraindicated in a patient with an increased ICP?

Answer 3

• Trendelenburg

Question 4

Which component would NOT be present in a manual resuscitator?
A. Bag inlet valve
B. Pressure limiting valve
C. Reservoir bag
D. Y-piece

Answer 4

D. Y-piece

Question 5

A patient is supine with the neck extended and the head turned to the right, away from the surgical site. Which positioning complication may occur?

Answer 5

• Stretching of the brachial plexus.

Question 6

In prone position, which pathophysiologic change occurs?

Answer 6

• ↓ Venous return through compression of the inferior vena cava
• ↓ CO
• ↑ Edema (facial, conjunctiva, larynx)
• ↑ Abdominal pressure
• Improved ventilation (ventilation and perfusion of the lungs shifts to dependent areas [anterior portion of the lungs have greather tissue])

Question 7

The adjustable pressure-limiting valve serves to:

Answer 7

• release gas to be scavenged.

Question 8

In which system is the fresh gas inlet the most distant from the patient connection?

Answer 8

• Mapleson A

Question 9

In lithotomy position, which nerve is MOST COMMONLY injured due to compression from leg supports?

Answer 9

• Common Peroneal

Question 10

What characteristic is NOT present in breathing tubing?

A. Consists of plastic that is large bore and corrugated
B. internal volume of 400 to 500 mL/m of length
C. A low resistance system
D. Multidirectional valves at the Y piece.

Answer 10

D. Multidirectional valves at the Y piece.

Question 11

Which potential injuries are associated with the SITTING position?

Answer 11

• Cerebrovascular injury
• Cerebral ischemia
• Cerebral hypoperfusion and air embolism
• Pneumocephalus
• Sciatic nerve injury
• Quadriplegia and spinal cord infarction
• Peripheral nerve injury