Patient has had night sweats and weight loss for 2 weeks. New onset hemoptysis brought her to the hospital.

pH = 7.35 
PaCO₂ = 47 mmHg 
HCO₃¯ = 24 mEq/L 
PaO₂ = 64
Sodium 136 mEq/L
Potassium 3.7 mEq/L
Chloride 105 mEq/L
CO2 24 mEq/L
Sputum culture: pending
Respiratory virus PCR multiplex: pending
Human Immunodeficiency Virus (HIV): pending
White blood cell 30 x 10³/mcL
Red blood cell count 4.2 million cells/mcL
Hemoglobin 11.6 gm/dL
Hematocrit 38%
Mean corpuscular volume 88
Platelets 155,000/mcL