Bronchitis

                

Definition

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  Bronchitis

Bronchitis is an inflammation of the lining of your bronchial tubes, which carry air to and from your lungs. People who have bronchitis often cough up thickened mucus, which can be discolored. Bronchitis may be either acute or chronic.

Often developing from a cold or other respiratory infection, acute bronchitis is very common. Chronic bronchitis, a more serious condition, is a constant irritation or inflammation of the lining of the bronchial tubes, often due to smoking.

Acute bronchitis usually improves within a few days without lasting effects, although you may continue to cough for weeks. However, if you have repeated bouts of bronchitis, you may have chronic bronchitis, which requires medical attention. Chronic bronchitis is one of the conditions included in chronic obstructive pulmonary disease (COPD)

Symptoms

For either acute bronchitis or chronic bronchitis, signs and symptoms may include:

• Cough
• Production of mucus (sputum), which can be clear, white, yellowish-gray or green in color — rarely, it may be streaked with blood
• Fatigue
• Shortness of breath
• Slight fever and chills
• Chest discomfort

If you have acute bronchitis, you may have a nagging cough that lingers for several weeks after the inflammation resolves. Chronic bronchitis is defined as a productive cough that lasts at least three months, with recurring bouts occurring for at least two consecutive years.

If you have chronic bronchitis, you're likely to have periods when your signs and symptoms worsen. At those times, you may have acute bronchitis on top of your chronic bronchitis.

When to see a doctor

See your doctor if your cough:

• Lasts more than three weeks
• Prevents you from sleeping
• Is accompanied by fever higher than 100.4 F (38 C)
• Produces discolored mucus
• Produces blood
• Is associated with wheezing or shortness of breath

Causes

Acute bronchitis is usually caused by viruses, typically the same viruses that cause colds and flu (influenza). Antibiotics don't kill viruses, so this type of medication isn't useful in most cases of bronchitis.

The most common cause of chronic bronchitis is smoking cigarettes. Air pollution and dust or toxic gases in the environment or workplace also can contribute to the condition.

Risk factors

Factors that increase your risk of bronchitis include:

• Cigarette smoke. People who smoke or who live with a smoker are at higher risk of both acute bronchitis and chronic bronchitis.
• Low resistance. This may result from another acute illness, such as a cold, or from a chronic condition that compromises your immune system. Older adults, infants and young children have greater vulnerability to infection.
• Exposure to irritants on the job. Your risk of developing bronchitis is greater if you work around certain lung irritants, such as grains or textiles, or are exposed to chemical fumes.
• Gastric reflux. Repeated bouts of severe heartburn can irritate your throat and make you more prone to developing bronchitis.

Complications

Although a single episode of bronchitis usually isn't cause for concern, it can lead to pneumonia in some people. Repeated bouts of bronchitis may indicate that you're developing chronic obstructive pulmonary disease (COPD).

Treatments and drugs

Most cases of acute bronchitis resolve without medical treatment in two weeks.

Medications

In some circumstances, your doctor may prescribe medications, including:

• Antibiotics. Bronchitis usually results from a viral infection, so antibiotics aren't effective. However, your doctor might prescribe an antibiotic if he or she suspects that you have a bacterial infection.
• Cough medicine. It's best not to suppress a cough that brings up mucus, because coughing helps remove irritants from your lungs and air passages. If your cough keeps you from sleeping, you might try cough suppressants at bedtime.
• Other medications. If you have allergies, asthma or chronic obstructive pulmonary disease (COPD), your doctor may recommend an inhaler and other medications to reduce inflammation and open narrowed passages in your lungs.

Therapies

If you have chronic bronchitis, you may benefit from pulmonary rehabilitation — a breathing exercise program in which a respiratory therapist teaches you how to breathe more easily and increase your ability to exercise.

Tests and diagnosis

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  Spirometer

During the first few days of illness, it can be difficult to distinguish the signs and symptoms of bronchitis from those of a common cold. During the physical exam, your doctor will use a stethoscope to listen closely to your lungs as you breathe.

In some cases, your doctor may suggest:

• Chest X-ray. A chest X-ray can help determine if you have pneumonia or another condition that may explain your cough. This is especially important if you ever were or currently are a smoker.
• Sputum tests. Sputum is the mucus that you cough up from your lungs. It can be tested to see if you have whooping cough (pertussis) or other illnesses that could be helped by antibiotics. Sputum can also be tested for signs of allergies.
• Pulmonary function test. During a pulmonary function test, you blow into a device called a spirometer, which measures how much air your lungs can hold and how quickly you can get air out of your lungs. This test checks for signs of asthma or emphysema.

Lifestyle and home remedies

To help you feel better, you may want to try the following self-care measures:

• Avoid lung irritants. Don't smoke. Wear a mask when the air is polluted or if you're exposed to irritants, such as paint or household cleaners with strong fumes.
• Use a humidifier. Warm, moist air helps relieve coughs and loosens mucus in your airways. But be sure to clean the humidifier according to the manufacturer's recommendations to avoid the growth of bacteria and fungi in the water container.
• Consider a face mask outside. If cold air aggravates your cough and causes shortness of breath, put on a cold-air face mask before you go outside.

Prevention

To reduce your risk of bronchitis, follow these tips:

• Avoid cigarette smoke. Cigarette smoke increases your risk of chronic bronchitis.
• Get vaccinated. Many cases of acute bronchitis result from influenza, a virus. Getting a yearly flu vaccine can help protect you from getting the flu. You may also want to consider vaccination that protects against some types of pneumonia.
• Wash your hands. To reduce your risk of catching a viral infection, wash your hands frequently and get in the habit of using hand sanitizers.
• Wear a surgical mask. If you have COPD, you might consider wearing a face mask at work and in crowds.

By Dr Sherazi clinic staff.