Skip to Content
UW Health SMPH

High Altitude Simulation Test (HAST)

Test date______________________  

Test time______________________

 

This test will be performed in the UWHC Pulmonary Function Lab, Room E5/520. From the main hospital entrance, take the stone path to the D elevators.  Go to the 5th floor, turn left, then head left down the first hallway.  Proceed to room E5/520.

 

What is a high altitude simulation test?

 

Someone with lung disease may need extra oxygen when flying or traveling at high altitudes.  This test has been ordered to see if your oxygen need will increase during these times.

 

You will be asked to breathe through a mask for about 20 minutes.  A clip will be put on your finger to measure your oxygen level throughout the test.  If your oxygen level decreases a certain amount, you will have a blood sample drawn from your arm to check the oxygen level in your blood.  Oxygen will be added to your mask until we find out how much oxygen is needed to bring your level up to normal.  This test will help your doctor know if oxygen will be required and how much will be needed.

 

How do I prepare for this test?

 

  • No smoking or breathing in secondhand smoke before the test.
  • No heavy exercise before the test.
  • Remove finger nail polish.

 

How will I feel after the test?

 

You may start to feel short of breath during the test, but you will be closely watched and given extra oxygen if needed.  After the test you will be able to eat, drink, and keep your normal routine.

 

Questions?

 

If you have any questions or concerns before the test, please call:

UWHC Pulmonary Function Lab: (608) 263-7000, Monday-Friday 8:00am-4:30pm. 

 

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: 06/13/2007

Copyright © 05/31/2006 University of Wisconsin Hospitals and Clinics Authority. All rights reserved. Produced by the Department of Nursing. UWH #6383

Print Health Fact For You