Methacholine Challenge
Test date______________________
Test time______________________
How do I check-in and get to the Pulmonary Function Lab?
When you arrive at the UW-Hospital, enter at the hospital entrance. Follow the gray path to Registration near the surgical waiting area in the C module. This is where you will sign in for your appointment. Your stop at registration will alert the staff of the Pulmonary Function Lab that you have arrived.
After your stop at Registration, go to the D elevator. Take the D elevator to the 5th floor and follow the signs to the Pulmonary Function Lab, E5-520. You will not find a check in desk; signs will direct you to the waiting area.
If you are being seen at the American Family Children’s Hospital, please check in at Registration on the 2nd Floor of the Children’s Hospital. Registration will tell the Pulmonary Function Lab Staff of your arrival.
What is a methacholine challenge?
This is a breathing test done to help your doctor check if you have asthma. You will be asked to breathe in a mist that contains methacholine. This mist can make your breathing worse, better, or stay the same. You will be asked to breathe increasing doses, with breathing tests done between each dose. This test will take 30 to 90 minutes.
How do I prepare for this test?
- You may eat a light meal before the test but do not have any caffeine, coffee, tea, cola drinks or chocolate.
- No smoking on the day of your test.
- Tell your doctor if you are pregnant or have had any recent colds, flu, or other illness, as this test may need to be rescheduled.
- You will be asked to hold certain medicines before this test:
Albuterol: Hold 12-24 hours
Singulair®, Spiriva®, or theophylline: Hold 24 hours
Serevent®, Flovent®, or Advair®: Hold 48 hours
Antihistamines: Hold 96 hours
Prednisone: 6 weeks
Note: If you are taking any beta blockers (such as atenolol, inderal, metoprolol, or others) please tell your doctor.
How will I feel after the test?
You should feel fine after your test. If you do have any shortness of breath or wheezing you may be given a few puffs of medicine from an albuterol inhaler to get rid of the symptoms. Albuterol may, but does not always, cause one to feel slightly shaky for a short time. You will be able to eat, drink, and keep your normal routine. Your doctor will discuss your test results with you.
Questions?
If you have any questions or concerns before the test, please call:
Pulmonary Function Lab, Monday-Friday, 8:00 am to 4:30 pm, (608) 263-7000.
Toll free 1-800-323-8942; ask for the Pulmonary Function Lab.
The information provided should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Any duplication or distribution of the information contained herein is strictly prohibited.
Last Updated: 06/09/2009
Copyright © 06/09/2009 University of Wisconsin Hospitals and Clinics Authority. All rights reserved. Produced by the Department of Nursing. UWH #6386
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