Physiology II
Respiratory Physiology and Pathophysiology
Analysis of Hypoxemia Cases

Students are encouraged to review the cases provided with the handouts, fill in the spaces in the chart below with data provided in the case or with values calculated from the data provided, and then use the flow chart provided to determine the pathophysiological mechanism(s) contributing to arterial hypoxemia in each case. 

Cases	FIO2	PAO2	PaO2	PaCO2	A-a O2 difference	FIO2 helpful?
Resp. Case A a 76-year-old woman with dyspnea	21%	63	60	69	3	No
Resp. Case B a 63-year-old woman with dyspnea and severe chest pain over the left side	30%	181.4	64	26	118	No
Resp. Case C a 49-year-old man with breathlessness during even moderate activity	21%	75	44	60	31	--
	100%	626	290	70	336	Yes
Resp. Case D a 21-year-old high-altitude native (sampled on mountain)	84 mmHg @ pressure 446 mmHg	50	48	27	2	Yes
Resp. Case E a 59-year-old man with shortness of breath	21%	70	42	64	28	--
	30%	101	56	90	45	No

Sorry For the bad scan...It is a scan of a scan...You should get the idea though.

Last Updated 09/06/01 08:53:27 PM
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