Breathing circuits 2

Question 1

The Bain circuit: (select 2)
a. is tested with the Pethick test
b. is a modified Mapleson A
c. delivers fresh gas through the inner tube
d. is best for spontaneous but not controlled ventilation

Answer 1

A. is tested with the Pethick test
C. delivers fresh gas through the inner tube

Question 2

The Bain system is a modified

Answer 2

Mapleson D design

Question 3

The Bain circuit is useful for

Answer 3

spontaneous and controlled ventilation

Question 4

To prevent rebreathing, the FGF should be

Answer 4

2.5x minute ventilation

Question 5

With the Bain circuit, fresh gas enters the circuit through the

Answer 5

thin inner tubing

Question 6

With the Bain circuit, exhaled gas exits via the

Answer 6

corrugated tubing

Question 7

_________- is used to test circuit integrity for the Bain system during the pre-anesthetic checkout procedure

Answer 7

The Pethick test

Question 8

The outer corrugated tubing of the Bain circuit should be

Answer 8

transparent so that you can assess the integrity of the inner tubing

Question 9

Describe a concern with using the Bain circuit.

Answer 9

the inner tubing can become kinked or disconnected which converts all of the corrugated tubing to dead space putting the patient at risk for hypercarbia

Question 10

With the Pethick test, how do you know if the circuit is safe to use?

Answer 10

collapsed reservoir bag- inner tubing is patent and circuit is safe to use
inflated reservoir bag- the inner tubing is occluded and the circuit is not safe to use