oxygen and suction

Question 1

is oxygen flammable?

Answer 1

no, but it does support combustion

Question 2

how much of atmospheric gases is oxygen

Answer 2

21%

Question 3

what is hypoxemia

Answer 3

abnormally low levels of oxygen in the blood

Question 4

what is hypoxia

Answer 4

inadequate oxygen supply at the tissue/cellular level

Question 5

how long can the brain fiction without adequate supply of oxygen

Answer 5

no more than 6 minutes

Question 6

what organs are the most sensitive to hypoxia

Answer 6

liver, heart and lungs

Question 7

what is the goal of oxygen therapy?

Answer 7

maintain adequate tissue oxidation
minimize the oncreased cardiopulmonary workload

Question 8

what is partial pressure

Answer 8

the amount of pressure a particular gas contributes to the total pressure

Question 9

air has a pressure of 100kPa, so what is the partial pressure for oxygen

Answer 9

21kPa

Question 10

what is oxygen tension

Answer 10

the amount of O2 I Nair or arterial blood

Question 11

how is oxygen tension expressed

Answer 11

PaO2

Question 12

what does the HCO3- buffer in the bloodstream do

Answer 12

prevents excessive acidity from too much CO2

Question 13

what is hypoventilation

Answer 13

inadequate ventilation by the lungs

Question 14

how does respiratory acidosis happen

Answer 14

hypoventilation causes increase in PaCO2
decreases HCO3-/PaCO2 ratio, decreasing the pH

Question 15

what is hypercapnia

Answer 15

increased PaCO2

Question 16

what is metabolic acidosis

Answer 16

serious electrolyte disorder
imbalance in the body’s acid-base balance

Question 17

ABG stands for what

Answer 17

arterial blood gases

Question 18

what is ABG

Answer 18

arterial blood gases
concentration of O2, CO2, HCO3-
acidity and saturation of hemoglobin with O2 (SaO2)

Question 19

what is a normal pH

Answer 19

7.35 - 7.45

Question 20

what is a normal PaCO2

Answer 20

35-45 mmHg

Question 21

what is a normal PAO2

Answer 21

75 - 100 mmHg

Question 22

what is a normal HCO3-

Answer 22

22-30 mmol/L

Question 23

what is a normal SaO2

Answer 23

95-100%

Question 24

what is happening when PaO2 is below 60mmHg

Answer 24

hemoglobin saturation is below 90%
can be assumed inadequate oxygenation of blood

Question 25

what is FiO2

Answer 25

fraction of inspired oxygen

Question 26

what is fraction of inhaled oxygen

Answer 26

volumetric fraction of oxygen in inhaled air

Question 27

what is the FiO2 of natural air

Answer 27

FiO2 0,21

Question 28

what is the typical limit of FiO2, and why

Answer 28

0.5 to avoid oxygen toxicity

Question 29

what is the Horowitz index or Carrico index

Answer 29

comparison between the oxygen level in the blood, versus the oxygen concentration that is being breathed

Question 30

what are the normal breaths per minute for an adult

Answer 30

15-20

Question 31

what are the normal breaths per minute for a child

Answer 31

(1-10ys) 20-30

Question 32

what are the normal breaths per minute for an infant

Answer 32

(under 1y) 30-60

Question 33

a pulse oximeter is used for what

Answer 33

to monitor the oxygen saturation of hemoglobin

Question 34

where is the pulse oximetry sensor attached

Answer 34

fingertip or earlobe

Question 35

what 3 arteries are used for ABG

Answer 35

radial artery at wrist brachial artery femoral artery at groin

Question 36

how is the flow rate of O2 measured ?

Answer 36

in a flow meter in LPM

Question 37

what flow rate range comes from the outlet?

Answer 37

0-15 LPM

Question 38

what type of flow meter is this

Answer 38

ball-float flowmeter

Question 39

what is important about using ball-float flow meters

Answer 39

to read from the middle (widest portion) of the ball

Question 40

how much O2 is in a full portable tank

Answer 40

2000lb pressure per sq inch

Question 41

what do the 2 regulator valves on a portable O2 tank show

Answer 41

1- how much oxygen is in the tank 2- rate of flow through the delivery tubing