Pulmonary Function Laboratory at Mount Zion

的 UCSF Pulmonary Function Laboratory at Mount Zion provides comprehensive testing for lung disease and preoperative workups to test lung function before surgery.

标准 pulmonary function tests 包括:

• Blood gas measurement.
• Diffusing capacity.
• Exercise testing (the six-minute walk test) – Evaluates oxygen saturation in the bloodstream, measured with a probe attached to the finger or ear.
• Lung volume – A special gas mixture is inhaled, then slowly exhaled, allowing lung volume to be measured.
• Spirometry – Measures volume and speed of inhaled and exhaled air.

More specialized tests 包括:

• Maximal inspiratory and expiratory pressures – Measures strength of respiratory muscles.
• Maximal voluntary ventilation – Measures amount of air inhaled and exhaled in one minute.
• Methacholine challenge – Methacholine causes airways to contract in people with asthma. 病人 inhale methacholine aerosol mist before and after spirometry, and if lung function drops by at least 20 percent, the result indicates asthma.