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Allergy Crystal Lake - Fan Choice Aword Dr. Hahn
Allergy Crystal Lake - Fan Choice Aword Dr. Askenazi

Vernon Hills area specialists provide testing to measure lung capacity

Allergies and asthma often go hand in hand. It’s estimated 90 percent of kids with asthma also have allergies and about 50 percent of asthmatic adults are allergic, making allergic asthma the most common type of asthma. In these cases, dust mites, pollen, and other allergens that cause itching, eye watering, and redness also cause severe wheezing, coughing, and chest tightness characteristic of an asthma attack.

During an asthma attack, already inflamed airways become even narrower. Drs. Noga Askenazi and Eugenia Hahn can actually quantify how well your lungs are functioning. Advanced Allergy & Asthma Associates and Food Allergy Center of Illinois offers a gold standard in lung function tests, spirometry.

During this type of test, you will be asked to breathe into a tube that is connected to a spirometer machine. The spirometer records information pertinent to how your lungs are functioning. The instructions Drs. Askenazi and Hahn give to you correspond with different measurements of your lung function.

For example, the total lung capacity measurement results after the doctors ask you to breathe in as deeply as you can. TLC measures how much air is left in your lungs. Slow vital capacity is a measure of the how much air can be slowly breathed out after you breathe in deeply. Functional residual capacity is the measurement of air in your lungs after you exhale normally. Forced vital capacity represents the amount of air you can forcefully breathe out after you breathe in very deeply.

Other indicators of how well your lungs are functioning include:

  • Forced Expiratory Volume – How much air is exhaled forcefully in a breath
  • Forced Expiratory Flow – The amount of air that flows halfway through the exhale
  • Peak Expiratory Flow – How much air is exhaled with maximum effort
  • Maximum Voluntary Ventilation – Greatest amount of air that is breathed in and out in 60 seconds
  • Residual Volume – The amount of air left in your lungs after exhaling completely
  • Expiratory Reserve Volume – The difference between the amount of air in your lungs after breathing out normally versus after forcefully exhaling

In turn, lung capacity testing is accompanied by the measurement of other indicators of lung function to give Vernon Hills area residents a better idea of what is causing their troubling symptoms. Pulmonary function tests may be used to identify everything from asthma to chronic obstructive pulmonary disease, emphysema, and chronic bronchitis.

The sooner Drs. Askenazi and Hahn are able to collect and analyze information on how you breathe, the earlier they can get you on a treatment plan that works and gets you feeling better. Call 847 888 8802 to schedule an appointment.

Back to Lung Function Testing

Dr. Noga Askenazi, Advanced Allergy & Asthma Associates

Advanced Allergy & Asthma Associates

Dr. Noga Askenazi | Dr. Eugenia Hahn | Meredith Cirrincione

Dr. Noga Askenazi is a nationally recognized asthma and allergy specialist who is board certified in pediatric and adult allergy. Her areas of special interest are innovative treatment of rashes, sinusitis, food allergies, asthma and immune disorders. She was past President of the ISAAI (Illinois Society of Allergy, Asthma, & Immunology), works on state and national committees for advancement of the allergy field and is a consultant for Advocate, AMITA, Northwestern amongst other health care systems. Her joy is helping patients reach their goals after together determining best treatments. Her staff and patients are a chosen family, and she invests in their happiness. She enjoys gardening, biking and cooking to good music.


Dr. Eugenia Hahn is a highly recognized board certified allergist and immunologist who treats patients of all ages. Her areas of special interest are food allergy, eczema, and asthma. She is president of the Illinois Society of Allergy & Asthma, a National Committee leader of the American Academy of Allergy, Asthma, and Immunology, a member of the American College of Allergy, Asthma, and Immunology working on new treatment options for patients. She is a consultant for Advocate, Northwestern, AMITA, Northwest Community healthcare systems amongst many others. Her patients mean everything to her as she takes pride in finding the why behind the problem. She enjoys reading and spending time with her family.


Meredith Cirrincione is a board certified Physician Assistant and specializes in treating allergies, with a focus on asthma, rashes, environmental allergies, chemical and food allergies. She holds a Masters in Physician Assistant Studies from The Chicago Medical School - Rosalind Franklin University of Health Sciences. She is a Fellow member of the American Academy of Physician Assistants, the Illinois Academy of Physician Assistants, and the Association of PAs in Allergy, Asthma and Immunology. She likes to approach things holistically. She is a strong patient advocate and adored by her patients. She enjoys singing, reading, cooking, and the great outdoors.