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Most people who have asthma are treated with daily medicine, called long-term control medicines, along with inhalers containing medicine for short-term relief during an asthma attack or when symptoms worsen.

Your doctor may diagnose asthma based on your medical history, a physical exam, and results from diagnostic tests. Your history of asthma symptoms will help your doctor determine if you have mild, moderate, or severe asthma.

How often asthma symptoms occur may depend on how severe, or intense, the asthma is, and whether you are exposed to allergens. Some people have symptoms every day, while others have symptoms only a few days of the year.

There is no routine screening for asthma, and there is no way to prevent asthma. Your doctor may recommend avoiding triggers to help prevent asthma from getting worse or causing asthma attacks.

You may have an increased risk of asthma because of your environment or occupation, your family history or genes, other medical conditions, your race or ethnicity, or your sex.

The exact cause of asthma is unknown, and the causes may vary from person to person. However, asthma is often the result of a strong response of the immune system to an allergen in the environment.

It is important that you receive follow-up care, know about the possible complications that may occur after the procedure, and follow the treatment plan that your doctor recommends for your condition.

After the procedure, your doctor will remove the catheter, sheath, and guidewire. A dressing, accompanied by pressure, is applied to the site where the catheter was inserted to stop the bleeding. You will be moved to a recovery room.

Cardiac catheterization takes place in a catheterization laboratory, or cath lab, which is similar to a small operating room. A long thin tube called a catheter is inserted via a needle, guidewire, and sheath into a blood vessel leading to the heart.

You will meet with your cardiologist, a doctor who specializes in the heart. Your doctor will ask you about your medical history, do a physical exam, give you instructions on how to prepare for the procedure, and may give you some tests or procedures.