E2 - Positioning and Breathing System Pre-Test Flashcards
The preferred location of the fresh gas inlet is between:
A. absorbent and inspiratory valve
B. inspiratory valve and y piece
C. absorbent and expiratory valve
D. y piece and absorbent
A. between the absorbent and the inspiratory valve.
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
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
Which position is contraindicated in a patient with an increased ICP?
A. Supine
B. Prone
C. Sitting
D. Trendelenberg
D. Trendelenburg
Which component would NOT be present in a manual resuscitator?
A. Bag inlet valve
B. Pressure limiting valve
C. Reservoir bag
D. Y-piece
D. Y-piece
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?
A. torsion of sciatic nerve
B. increased IOP on right eye
C. stretching of the brachial plexus
D. ulnar nerve palsy
C. Stretching of the brachial plexus.
In prone position, which pathophysiologic change occurs?
A. decreased venous return
B. decreased abdominal pressure
C. decreased intraocular edema
D. decreased ventilation
A. ↓ Venous return through compression of the inferior vena cava (resulting in ↓ CO)
other changes: ↑Facial Edema, ↑ Abdominal pressure, and Improved ventilation
The adjustable pressure-limiting valve serves to:
A. scrub CO2 from circuit
B. release gas to be scavenged
C. allow reservoir bag to fill at all times
D. prevent gas from reverse flow
B. release gas to be scavenged.
In which system is the fresh gas inlet the most distant from the patient connection?
A. Mapleson D
B. Bain circuit
C. Circle system
D. Mapleson B
E. Mapleson C
F. Mapleson A
F. Mapleson A
In lithotomy position, which nerve is MOST COMMONLY injured due to compression from leg supports?
A. sciatic
B. lateral femoral cutaneous
C. common peroneal
D. ulnar nerve
C. Common Peroneal
lateral femoral cutaneous nerve injury is from too much of a hip bend
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.
D. Multidirectional valves at the Y piece.
Which potential injuries are associated with the SITTING position? Select 2
A. Pressure alopecia
B. lateral femoral cutaneous nerve injury
C. brachial plexus injury
D. cerebrovascular injury
E. ulnar nerve injury
F. sciatic nerve injury
D. Cerebrovascular injury
F. Sciatic nerve injury
Others injuries: Cerebral hypoperfusion and air embolism, Pneumocephalus, Quadriplegia and spinal cord infarction, Cerebral ischemia, Peripheral nerve injury
The fresh gas flow is 2L/min and the patient’s minute volume is 5L/min, emergence after turning off the sevoflurane would be:
A. slower.
B. faster.
C. unchanged as these factors do not affect emergence.
D. would not occur.
A. slower
if rebreathing is occuring, induction and emergence are both prolonged.
Modification of which Mapleson system has the addition of coaxial tubing?
A. Mapleson E
B. Mapleson D
C. Jackson-Rees
D. Mapleson A
B. Mapleson D
called a “bain circuit”
When flow exceeds a critical rate, flow becomes:
A. turbulent
B. deleterious
C. laminar
D. irreversible
A. turbulent
After gas passes through tubing, the pressure at the outlet as compared to the inlet is:
A. higher
B. equal
C. lower
D. indeterminate
C. lower
