Pulmonary function tests are used when: 1  Screening for the presence of obstructive and/or restrictive lung diseases. 2  Determining the patient's condition prior to surgery in order to assess the risk of respiratory complications after surgery.  Evaluating the ability of a patient to be weaned off a ventilator.
Health benefits. One stalk of celery contains only about 10 calories, while a cup of chopped celery contains about 16. It also contains dietary fiber (1.6 grams per cup), which helps curb cravings because it absorbs water in the digestive tract, making you feel fuller longer.
Hey, Patti! I personally love celery juice (I know Iâm strange). I can drink it straight as well. ð Every stalk of celery is of a different size, so I canât tell you precisely how much youâll get from each stalk, or how many stalks of celery you need to render 16 oz of juice.