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.
Identification. A medium stalk of celery, about 8 inches long, contains only six calories, according to the U.S. Department of Agriculture. By weight, a stalk of celery is more than 95 percent water.The remainder of it consists mostly of carbohydrates and sugars. Celery also contains some vital nutrients, including 11.7 micrograms of vitamin K, 1.2 milligrams of vitamin C, 104 milligrams of potassium and 0.6 gram of dietary fiber per medium stalk.t most, the calorie deficit provided by celery is a few dozen calories. In order to lose a pound of fat, you must create a deficit of about 3,500 calories. So, it would take eating more than a hundred stalks of celery to lose a single pound.