Final Exam 1120 (Part 2)

what is the normal psi for a full cylinder?

• 2000 psi

• 1500

• 500

what psi should be replaced

• 2000

• 1500

• 500

where are the central chemoreceptors

• medulla and brain stem

• carotid arteries

• aorta

Nasal cannula flow rate and oxygen percentage

• 2-6 L; 24-44%

• 10-15L; 80-100%

• 10-15L; 24-44%

what do central chemoreceptors do?

• they detect carbon dioxide levels and pH, they are responsible for controlling breathing based on changes in these levels

• they detect oxygen levels and pH, they are responsible for controlling breathing based on changes in these levels

• they detect oxygen levels and pH, they are responsible for controlling heart rate based on changes in these levels

what is the flow rate and percentage of oxygen delivered by nonrebreather mask

• 10-15L; up to 90%

• 2-6L; up to 90%

• 10-15L; 24-44%

what is the percentage of oxygen delivered by the bagmask

• 100%

• 95%

• 70%

each cell of the body combines nutrients and oxygen and produces energy and waste products through a process called

• metabolism

• respirations

• ventilation

a ventilation/perfusion mismatch occurs when

• a disruption in blood flow inhibits the exchange of oxygen and carbon dioxide in the lungs, even though the alveoli are filled with fresh oxygen

• ventilation is inadequate due to trauma and the blood cells can't properly get oxygenated and perfuse thought he body

• a traumatic injury or medical condition impairs the body's ability to effectively bring oxygen into the lungs and remove carbon dioxide from the body

how does CPAP improve oxygenation and ventilation (select all that apply)

• increases lung pressure, open collapsed alveoli

• pushes more oxygen across alveolar membrane

• forces interstitial fluid back into the pulmonary circulation

• decreases lung pressure, open collapsed alveoli

• pushes more carbon dioxide across alveolar membrane