H7N9 avian influenza with first manifestation of occipital neuralgia: A case report

Table 4 Aterial blood gases

Time	PH	PO2 (mmHg)	PCO2 (mmHg)	Lac (mmol/L)	SO2 (%)	BE (mmol/L)	cHCO3 (mmol/L)	A-aDO2 (mmHg)	%FiO2 (L)
6.15 11:25 am	7.32	36	37	2.1	56	-5.9	19.1	210	41
6.15 13:37pm	7.08	60	55	4.9	69	-14	16.5	584	100
6.15 15:21pm	7.18	56	50	3	75	-9.8	16.5	595	100

PH: Blood acid-base scale; PO2: Partial pressure of oxygen; PCO2: Arteriovenous carbon dioxide partial pressure difference; Lac: lactic acid; SO2: Oxygen saturation; BE: Base excess; cHCO3: Concentration of bicarbonate in plasma; A-aDO2: Alveolar-arterial oxygen difference; %FiO2: Fraction of inspired O2.