Patient should be conscious and able to follow simple instructions. Patient's height and weight should be measured without shoes. Loose comfortable clothing that does not restrict chest expansion should be worn. Smoking history, including the last cigarette smoked, should be obtained. Current medications should be obtained with particular emphasis on bronchodilators and steroids.
Patients often complain of dizziness and lightheadedness.
Adequate rest, up to 5 minutes, should follow each effort.