Anesthesia machine 4 Flashcards
Choose the statement that BEST describes the Tec 6 vaporizer (select two):
a. it is pressurized to two atmospheres
b. it uses a flow-over design
c. it is heated to 42 degrees
d. its output is increased inside a hyperbaric chamber
a. it is pressurized to two atmospheres
d. its output is increased inside a hyperbaric chamber
The Tec 6 is different than a variable bypass vaporizer in that it
injects a precise amount of vaporized desflurane directly into the fresh gas flow
To ensure precise vaporizer output, the desflurane vaporizer heats the liquid anesthetic to ________ and pressurizes it to _______
39 C and 2 atmospheres
The Tec 6 vaporizer does not
compensate for changes in elevation
With the Tec 6, a lower ambient pressure (high altitude) requires
a higher setting on the dial
With the Tec 6, a higher ambient pressure (hyperbaric oxygen tank) requires
a lower setting on the dial
Which device will be the FIRST to detect an oxygen pipeline crossover?
a. proportioning system
b. oxygen analyzer
c. fail-safe device
d. pulse oximeter
b. oxygen analyzer
The oxygen analyzer typically resides in the
inspiratory limb of the breathing circuit
The oxygen analyzer is the final defense against
the delivery of a hypoxic mixture
The only safety device in the anesthesia machine that measures oxygen concentration is
the oxygen analyzer
If O2 consumption increases, but O2 delivery remains constant, then it’s possible
to create a hypoxic mixture
What are the three roles of the oxygen analyzer?
it monitors oxygen concentration (not pressure)
it can detect an oxygen pipeline crossover
it can detect a hypoxic mixture caused by a leak in the oxygen flowmeter
The galvanic fuel-cell oxygen analyzer must be
calibrated daily and the components are consumable so must be replaced over time
The paramagnetic device oxygen analyzer is
self-calibrating and has no consumale parts
Compared to the galvanic fuel-cell, the paramagnetic device
has a faster response time
What are the MOST critical actions to perform during an oxygen pipeline crossover? (select 2)
a. disconnect the pipeline supply
b. replace the oxygen analyzer
c. ventilate with an ambu with the auxillary oxgyen flowmeter
d. turn on the oxygen tank
a. disconnect the pipeline supply
d. turn on the oxygen tank
When the oxygen analyzer alarms, it’s best to assume
that a pipeline crossover has occurred until other causes can be ruled out