How Is the Positive Pressure Level Established in a Bubble

question 5

Multiple Choice

How is the positive pressure level established in a bubble CPAP system?

• A) The therapist dials the desired CPAP level directly on the ventilator.
• B) The therapist immerses the distal end of the expiratory limb a certain distance below the water surface.
• C) The CPAP level is established by stacking adaptors with weighted balls to the distal opening of the expiratory limb.
• D) The positive pressure is achieved by tightening a screw clamp attached to the expiratory limb until the desired pressure is achieved.

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Definitions:

Market Equilibrium Price

The price at which the quantity of goods supplied equals the quantity of goods demanded in the market.

Normal Profit

The level of profit that is just sufficient to keep an entrepreneur in business, equaling total revenues minus explicit and implicit costs.

Price System

An economic mechanism wherein prices are determined by the interaction of supply and demand, guiding the allocation of resources and distribution of goods and services.

Scarce Goods

Items that are limited in availability relative to the desires or needs of consumers.