Your heart specialist may ask you not to eat, drink, or smoke for up to two hours before the test is administered. If you are curious, you should ask your doctor whether or not to avoid caffeine or certain medications that you may be taking. These medications may negatively interfere with certain exercise stress tests. It is better to be safe than sorry, so you should ask whatever questions you need to before the trial date.
If you regularly use an inhaler for asthma or other breathing-related problems, bring the inhaler with you to the exercise stress test. Your doctor or another health care team member will monitor your entire stress test and should know about the inhaler. If they do not, please do not hesitate to speak up and let them know of your condition. Any information is useful to your heart specialist!