Hazards of Supplemental Oxygen

1. Damage to lung tissue can occur at clinical O2 levels.

True

False

According to Egan's this is a true statement (p.870)

Explanation

According to Egan's this is a true statement (p.870)

2. The two primary factors of O2 toxicity are PIO2 AND exposure time.

True

False

The partial pressure of inspired O2 and the time exposed to it are the primary factors.

Explanation

The partial pressure of inspired O2 and the time exposed to it are the primary factors.

3. Adults can usually breathe 50% FIO2 for extended periods of time without any damage.

True

False

P.871 of Egan's

Explanation

P.871 of Egan's

4. What is the vasoconstrictive reaction that causes necrosis and proliferation of vessels leading to scar tissue, retinal detachment, and possible blindness in newborns called? (1 of it's names anyway, I've seen at least 3 so far)

Retinology of Newborn

Rhinoplasty of Newborn

Rhinoceritis Prematurus

Retinopathy of Newborn

NOTA

Retinopathy of Newborn, Retinopathy of Prematurity (ROP), or Retrolental Fibroplasia. Retinopathy of Newborn is what we called it in class. The other stuff is made up, although I guess you could give a newborn a nose-job (rhinoplasty).

Explanation

Retinopathy of Newborn, Retinopathy of Prematurity (ROP), or Retrolental Fibroplasia. Retinopathy of Newborn is what we called it in class. The other stuff is made up, although I guess you could give a newborn a nose-job (rhinoplasty).

5. CNS effects only occur at pressures lower than 1ATM.

True

False

CNS effects usually only happen when a patient is breathing oxygen at pressures greater than 1ATM, and although they probably could (and do) occur at less, the "only" is the falsifier here.

Explanation

CNS effects usually only happen when a patient is breathing oxygen at pressures greater than 1ATM, and although they probably could (and do) occur at less, the "only" is the falsifier here.

6. Oxygen toxicity primarily affects the _____ and the ___. (2 words, first word 5 letters, second "word" 3 letters, 1 space in between, and once again all lower case)

Oxygen toxicity primarily affects the lungs and the central nervous system (CNS).

Explanation

Oxygen toxicity primarily affects the lungs and the central nervous system (CNS).

Submit

7. Absorption atelectasis can occur in patients breathing room air.

True

False

Low tidal volumes in semi-conscious or unconscious patients can possibly lead to this situation.

Explanation

Low tidal volumes in semi-conscious or unconscious patients can possibly lead to this situation.

8. Absorption atelectasis is a reaction to increased FIO2 that results in a decrease in:

CO2

N2

PAO2

H2

AOTA

NOTA

Absorption atelectasis occurs as high levels of O2 push N2 out of the blood and cause rapid decrease of total pressure of venous gasses. This can lead to lung collapse, especially if alveoli become obstructed.

Explanation

Absorption atelectasis occurs as high levels of O2 push N2 out of the blood and cause rapid decrease of total pressure of venous gasses. This can lead to lung collapse, especially if alveoli become obstructed.

9. The "goal" of O2 therapy is to have the patient:

At 100% for less than 24 hours

Decreased to 70% within 2 days

Decreased to 50% or less within 5 days

AOTA

The "true goal" is to use the lowest FIO2 with adequate tissue oxygenation, but this is the rule of thumb info off of page 871 that was also presented in lecture.

Explanation

The "true goal" is to use the lowest FIO2 with adequate tissue oxygenation, but this is the rule of thumb info off of page 871 that was also presented in lecture.

10. I hate fill in the blank because it is impossible to get everybody to enter the same thing, and there is nothing more frustrating then getting a question wrong just because you used a capital letter. Oh well, let's do it anyway, just follow the rules! Oxygen toxicity is caused as a result of ____ ________. (2 words, 1st word 4 letters, 2nd 8 letters all lower case with a space inbetween)

Oxygen free radicals are byproducts of cellular metabolism that can damage or kill cells if they get out of control.

Explanation

Oxygen free radicals are byproducts of cellular metabolism that can damage or kill cells if they get out of control.

Submit

11. According to the book (Egan's p.872) this is a natural response that prevents absorption atelectasis in alert individuals.

Sigh

Cough

Hiccup

Belch

NOTA

Sighing or what I think they mean yawning supposedly periodically hyperinflates the lung.

Explanation

Sighing or what I think they mean yawning supposedly periodically hyperinflates the lung.

12. It is ALWAYS necessary to ween patients from 100% O2 within the 24 hour window.

True

False

If your patient needs the O2 you give it to them. Sparing them from any effects of oxygen toxicity isn't going to do them any good if they suffer tissue damage from hypoxia.

Explanation

If your patient needs the O2 you give it to them. Sparing them from any effects of oxygen toxicity isn't going to do them any good if they suffer tissue damage from hypoxia.

13. Major alveolar injury occurs after the exudative phase in pulmonary injury of hypoxia.

True

False

Major alveolar injury occurs first and as the type I cells are destroyed type II cells develop causing super surfactant slip n' slide (exudative phase) that can then lead to fibrosis as hyaline membranes form in the damaged alveolar regions.

Explanation

Major alveolar injury occurs first and as the type I cells are destroyed type II cells develop causing super surfactant slip n' slide (exudative phase) that can then lead to fibrosis as hyaline membranes form in the damaged alveolar regions.

Hazards Of Supplemental Oxygen