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19 Cards in this Set
- Front
- Back
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Hypoxemia
Parameters |
PaO2 < 50-60 mmHg
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Hypercapnia
Parameters |
PaCO2 > 45-50 mmHg
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Normal PaO2/ FiO2
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PaO2/ FiO2 = 500mmHg
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Acute Lung Injury
PaO2/ FiO2 |
PaO2/ FiO2 < 300 mmHg
w/ non-cardiogenic pulmonary edema |
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ARDS
PaO2/ FiO2 |
PaO2/ FiO2 < 200 mmHg
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Hypoxemia
w/ normal A-a gradient |
-high altitude
-hypoventilation |
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Hypoventilation changes in PaO2 and PaCO2
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PaO2 falls 5 mmHg
PaCO2 rises 4 mmHg |
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V/ Q mismatch causes
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-pneumonia
-ARDS -atelectasis -pulmonary edema |
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Hypoxemia that will not be corrected with O2
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R--->L cardiac shunts
pulmonary embolism |
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Most common cause of hypoxemia
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V/ Q mismatching
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SpO2 with Methemhemoglobinemia
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will read 85% regardless
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SpO2 with CO-poisoning
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SpO2 will not reflect true SpO2
will usually be higher than actual |
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Pulsus paradoxus
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drop >10 mmHg with inspiration
shows severe airway obstruction |
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SpO2 error margin
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+/- 4%
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bronchovesicular or vesicular sounds in periphery
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microatelectasis
-normal CXR -hypoxic -expiration > inspiration |
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chronic hypoxia treatment
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50/ 50 club
aim for SpO2--> 90% otherwise will fall asleep/ code |
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A-a limitations
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only for room air
with supplemental O2, use PaO2/ FiO2 (500 mmHg) |
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normal A-a Gradient
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5-16 mmHg
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where will you be hypoxic with normal A-a?
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-high altitude
-hypoventilation |
