Modified Comorbidity Score

• have a history of COPD or pre-existing lung disease?

• have respiratory dysfunction?

• have a history of CHF?

• have cardiac dysfunction?

• have seizures, stroke, coma or other neurologic dysfunction?

• receiving antibiotics?

• have an abnormal serum sodium concentration?

• have an abnormal serum potassium concentration?

• have an abnormal serum phosphate concentration?

• have an abnormal serum calcium concentration?

Serum creatiinine concentration

Upper limit of normal for serum creatinine

Serum total bilirubin

Upper limit of normal for serum total bilirbuin

Serum AST

Upper limit of normal for serum AST

Serum ALT

Upper limit of normal for serum ALT