Oxygen Demand

Question 1

Cells require ___ % of the oxygen supply to perform their functions.

Answer 1

25%

Question 2

An increase in cellular metabolism means an increase in ____

Answer 2

Oxygen consumption and metabolic demand.

Question 3

Increased metabolic demand by the cells increases ____

Answer 3

Oxygen demand

Question 4

How does the body compensate to meet high metabolic demand? When o2 supply is depleted

Answer 4

Increased HR and increased RR to increase the o2 supply. (through ventilation, WOB, cardiac output)

Question 5

The body’s fight or flight response of the SNS system is designed to ______

Answer 5

Increase the O2 supply by increasing metabolic and o2 demand.

Question 6

What are 3 factors that increase metabolic demand?

Answer 6

Increased physical activity, Increased Temperature, and Increased Stress (physiologic and perceived).

Question 7

A patient recovering from illness, infection, trauma, surgery, the stress from surgery etc requires..

Answer 7

More oxygen by their cells.

Their metabolic demand increases significantly.

Question 8

An increase in HR and RR may increase..

Answer 8

Metabolic Rate

Question 9

Oxygen demand rises which will begin to…

Answer 9

Deplete the o2 supply. Nursing and medical interventions are required to help increase supply and to decrease demands.

Question 10

What are some nursing interventions you could implement to increase o2 supply?

Answer 10

Supplemental o2, DB & C, re-positioning, incentive spirometry, bronchodilators, BiPAP, blood products, fluids, drugs (vasoactive drugs that can cause vasoconstriction that increase blood return to the heart which will help increase preload).

Question 11

What are some nursing interventions you could implement to decrease O2 demand?

Answer 11

Pain medications, antipyretics, antibiotics, anti-anxiety meds, stress reduction, decreased patient stimulation, keeping pt informed, relaxation/meditation