NOTE--Venous blood pH measurements correlated highly with arterial pH measurements (avg. diff. .04 units) in a study of 246 pts presenting toa n ED, many of them with metabolic or respiratory derangements (Emerg. Med. J. 18:340, 2001--JW)

Acute Respiratory Distress Syndrome (ARDS) Mechanical Ventilation
Asthma and COPD Obstructive Sleep Apnea/Hypopnea
Bronchiolitis Pleural Effusion
Carbon Monoxide Poisoning Pneumonia
Chronic Cough Pneumothorax
Croup Pulmonary Embolus
Dyspnea Pulmonary Hypertension

Idiopathic Pulmonary Fibrosis

Pulmonary Nodules
Inspiratory Wheeze/Stridor in Children Spirometry
Lower Airways Dysfunction in Infants "Stress-Induced" GI Bleeding in ICU Patients 
Lung Cancer  Tuberculosis