TABLE 1

Laboratory results on presentation and 1 year earlier

TestCurrent levela1 year earlierReference range
Sodium (mmol/L)144135136–144
Potassium (mmol/L)2.84.03.7–5.1
Chloride (mmol/L)9610097–105
Bicarbonate (mmol/L)402822–30b
Serum creatinine (mg/dL)1.21.20.58–0.96
Blood urea nitrogen (mg/dL)28197–21
Glucose (mg/dL)19774–99
Calcium and magnesiumNormal
Arterial blood gases
pH7.507.347.35–7.45
PCo2 (mm Hg)514034–46c
PaO2 (mm Hg)757685–95
Bicarbonate (mmol/L)4022–26

  • ↵a Abnormal results are shown in bold.

  • ↵b For acid-base problem-solving, a value of 25 mmol/L is considered normal.

  • ↵c For acid-base problem-solving, a value of 40 mm Hg is considered normal.