Which of the Following Is a True Statement About the Delivery

question 13

Multiple Choice

Which of the following is a true statement about the delivery of warm,humidified gas to the lungs?

• A) The gas delivered to the nose or mouth contains 95% relative humidity and has an absolute humidity of 28 mg/L to 34 mg/L at 29° C to 32° C.
• B) The gas delivered to the hypopharynx contains 50% relative humidity and has an absolute humidity level of 10 mg/L at 22° C.
• C) The gas delivered to the midtrachea contains 50% relative humidity and has an absolute humidity level of 36 mg/L to 40 mg/L at 31° C to 35° C.
• D) The gas delivered to the midtrachea contains 100% relative humidity and has an absolute humidity level of 36 mg/L to 40 mg/L at 31° C to 35° C.

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Definitions:

Variable-Ratio

A reinforcement pattern in which a reaction is rewarded following a random number of responses, resulting in consistent and elevated rates of response.

Fixed-Ratio

A reinforcement schedule where a response is reinforced only after a specified number of responses have occurred.

Fixed-Interval

A reinforcement schedule in which the first reaction is reinforced after a predetermined period, resulting in a patterned series of responses.

Variable-Interval

A schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed.