Hypoxemia - Revision history

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2026-03-21T16:32:16Z

Add Aa_Gradient_Calculator to page

2023-05-17T21:11:23Z

2021-10-23T12:15:55Z

Management

2016-08-01T15:47:12Z

Text replacement - "Hb" to "hemoglobin"

← Revisión anterior		Revisión del 15:47 1 ago 2016
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	*Defined as PaO2 <60 mm Hg		*Defined as PaO2 <60 mm Hg
	**Amount of oxygen available is a function of the arterial oxygen content and blood flow		**Amount of oxygen available is a function of the arterial oxygen content and blood flow
	*Occurs in states of low CO, low Hb, or low SaO2 (arterial oxygen saturation)		*Occurs in states of low CO, low hemoglobin, or low SaO2 (arterial oxygen saturation)
	*Relative Hypoxemia		*Relative Hypoxemia
	**PaO2 is < expected for given level of inhaled O2 (e.g. PaO2 of 100 on FiO2 100%)		**PaO2 is < expected for given level of inhaled O2 (e.g. PaO2 of 100 on FiO2 100%)

2016-07-25T01:39:25Z

Text replacement - "==Diagnosis==" to "==Evaluation=="

2016-07-18T16:55:35Z

Text replacement - "PNA" to "pneumonia"

← Revisión anterior		Revisión del 16:55 18 jul 2016
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	**Hallmark is failure of arterial O2 levels to increase with supplemental O2 (increased A-a)		**Hallmark is failure of arterial O2 levels to increase with supplemental O2 (increased A-a)
	*V/Q mismatch		*V/Q mismatch
	**PE, ~~PNA~~, asthma, COPD		**PE, pneumonia, asthma, COPD
	**Improves with supplemental O2		**Improves with supplemental O2
	**A-a gradient increased		**A-a gradient increased

2016-07-14T19:00:40Z

Text replacement - "incr " to "increased "

← Revisión anterior		Revisión del 19:00 14 jul 2016
Línea 15:		Línea 15:
	**Occurs when blood enters the systemic arteries with out traversing ventilated lung		**Occurs when blood enters the systemic arteries with out traversing ventilated lung
	***Occurs with pulmonary consolidation, atelectasis		***Occurs with pulmonary consolidation, atelectasis
	**Hallmark is failure of arterial O2 levels to increase with supplemental O2 (~~incr~~ A-a)		**Hallmark is failure of arterial O2 levels to increase with supplemental O2 (increased A-a)
	*V/Q mismatch		*V/Q mismatch
	**PE, PNA, asthma, COPD		**PE, PNA, asthma, COPD

2016-07-13T05:40:30Z

Text replacement - " w/ " to " with "

← Revisión anterior		Revisión del 05:40 13 jul 2016
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	===Causes===		===Causes===
	*Hypoventilation		*Hypoventilation
	**Always associated w/ increased PaCO2		**Always associated with increased PaCO2
	**Normal A-a gradient		**Normal A-a gradient
	*Right-to-left shunt		*Right-to-left shunt
	**Occurs when blood enters the systemic arteries with out traversing ventilated lung		**Occurs when blood enters the systemic arteries with out traversing ventilated lung
	***Occurs with pulmonary consolidation, atelectasis		***Occurs with pulmonary consolidation, atelectasis
	**Hallmark is failure of arterial O2 levels to increase w/ supplemental O2 (incr A-a)		**Hallmark is failure of arterial O2 levels to increase with supplemental O2 (incr A-a)
	*V/Q mismatch		*V/Q mismatch
	**PE, PNA, asthma, COPD		**PE, PNA, asthma, COPD
	**Improves w/ supplemental O2		**Improves with supplemental O2
	**A-a gradient increased		**A-a gradient increased
	*Diffusion impairment		*Diffusion impairment
	**Improves w/ supplemental O2		**Improves with supplemental O2
	**A-a gradient increased		**A-a gradient increased
	*Low inspired O2		*Low inspired O2
	**Improves w/ supplemental O2		**Improves with supplemental O2
	**A-a gradient normal		**A-a gradient normal

2016-07-10T06:02:51Z

Text replacement - "w/o" to "with out"

← Revisión anterior		Revisión del 06:02 10 jul 2016
Línea 13:		Línea 13:
	**Normal A-a gradient		**Normal A-a gradient
	*Right-to-left shunt		*Right-to-left shunt
	**Occurs when blood enters the systemic arteries ~~w/o~~ traversing ventilated lung		**Occurs when blood enters the systemic arteries with out traversing ventilated lung
	***Occurs with pulmonary consolidation, atelectasis		***Occurs with pulmonary consolidation, atelectasis
	**Hallmark is failure of arterial O2 levels to increase w/ supplemental O2 (incr A-a)		**Hallmark is failure of arterial O2 levels to increase w/ supplemental O2 (incr A-a)

2016-06-28T02:03:46Z

Text replacement - "Tintinalli" to ""