About
About Aerosol/Metacholine Challenge
The Aerosol/Metacholine challenge is a specific type of pulmonary function test used to assess how reactive or sensitive the airways are. This test is particularly useful in diagnosing conditions like asthma.
The test involves inhaling a mist containing metacholine, a substance that can cause airways to narrow. Before the test, a baseline lung function test is performed. Then, the patient inhales increasing concentrations of metacholine aerosol.
The patient's lung function is measured after each inhalation to determine how the airways react to the substance.
The Aerosol/Metacholine challenge usually takes about 40 minutes to 1 hour.
Normal activities and diet can be resumed after the test, unless the doctor advises otherwise.
Home Preparation
Before undergoing an Aerosol/Metacholine challenge, certain preparations are needed:
Patients are advised to avoid consuming caffeine for at least 4 hours before the test, as it can affect the test results.
Short-acting asthma medications should be avoided for 4 to 6 hours before the test.
Wearing comfortable clothing is recommended as some physical effort is involved.
A Parent’s/Guardian’s Role
During the Aerosol/Metacholine Challenge The key role of a parent or guardian is to provide emotional support and reassurance, especially if the patient is a child or feels anxious.
Parents/guardians can accompany the patient in the testing room, unless otherwise specified.
It's important to avoid distractions and remain quiet during the test to ensure accurate results.
After the Aerosol/Metacholine Challenge
Following the test, patients can generally return to their normal routine.
Keep an eye out for any delayed reactions or side effects, and contact a healthcare provider if any concerns arise.
Discuss the results and any further steps with the doctor once the test is completed.