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Lungs
Lungs


Bronchitis
Bronchitis


Lung anatomy
Lung anatomy


Bronchitis and Normal Condition in Tertiary Bronchus
Bronchitis and Normal Condition in Tertiary Bronchus


Cause of Acute Bronchitis
Cause of Acute Bronchitis


Cause of Chronic Bronchitis
Cause of Chronic Bronchitis


COPD (Chronic Obstructive Pulmonary Disorder)
COPD (Chronic Obstructive Pulmonary Disorder)


Definition:

Bronchitis is inflammation of the main air passages to the lungs. Bronchitis may be short-lived (acute) or chronic, meaning that it lasts a long time and often recurs.

See also: Chronic obstructive pulmonary disease (COPD)



Alternative Names:

Inflammation - bronchi; Acute bronchitis



Causes, incidence, and risk factors:

Acute bronchitis generally follows a viral respiratory infection. At first, it affects your nose, sinuses, and throat and then spreads to the lungs. Sometimes, you may get another (secondary) bacterial infection in the airways.This means that bacteria infect the airways, in addition to the virus.

People at risk for acute bronchitis include:

  • The elderly, infants, and young children
  • Persons with heart or lung disease
  • Smokers

Chronic bronchitis is a long-term condition. People have a cough that produces excessive mucus. To be diagnosed with chronic bronchitis, you must have a cough with mucus most days of the month for at least 3 months.

Chronic bronchitis is one type of chronic obstructive pulmonary disease , or COPD for short. (Emphysema is another type of COPD.)

The following things can make bronchitis worse:

  • Air pollution
  • Allergies
  • Certain occupations (such as coal mining, textile manufacturing, or grain handling)
  • Infections


Symptoms:

The symptoms of either type of bronchitis may include:

  • Chest discomfort
  • Cough that produces mucus; if it's yellow-green, you are more likely to have a bacterial infection
  • Fatigue
  • Fever -- usually low
  • Shortness of breath worsened by exertion or mild activity
  • Wheezing

Even after acute bronchitis has cleared, you may have a dry, nagging cough that lingers for several weeks.

Additional symptoms of chronic bronchitis include:

  • Ankle, feet, and leg swelling
  • Blue-colored lips from low levels of oxygen
  • Frequent respiratory infections (such as colds or the flu)


Signs and tests:

The health care provider will listen to your lungs with a stethoscope. Abnormal sounds in the lungs called rales or other abnormal breathing sounds may be heard.

Tests may include:

  • Chest x-ray
  • Lung function tests provide information that is useful for diagnosis and your outlook.
  • Pulse oximetry helps determine the amount of oxygen in your blood. This quick and painless test uses a device that is placed onto the end of your finger. Arterial blood gas is a more exact measurement of oxygen and carbon dioxide levels, but it requires a needle stick and is more painful.
  • Sputum samples may be taken to check for signs of inflammation or bacterial infection.


Treatment:

You DO NOT need antibiotics for acute bronchitis caused by a virus. The infection will generally go away on its own within 1 week. Take the following steps for some relief:

  • Do not smoke
  • Drink plenty of fluids
  • Rest
  • Take aspirin or acetaminophen (Tylenol) if you have a fever. DO NOT give aspirin to children
  • Use a humidifier or steam in the bathroom

If your symptoms do not improve, your doctor may prescribe an inhaler to open your airways if you are wheezing. If your doctor thinks that you have a secondary bacterial infection, antibiotics may be prescribed. Most of the time, antibiotics are not needed or recommended.

For any bronchitis, the most important step you can take is to QUIT smoking. If bronchitis is caught early enough, you can prevent the damage to your lungs.



Support Groups:



Expectations (prognosis):

For acute bronchitis, symptoms usually go away within 7 to 10 days if you do not have an underlying lung disorder. However, a dry, hacking cough can linger for a number of months.

The chance for recovery is poor for persons with advanced chronic bronchitis. Early recognition and treatment, combined with smoking cessation, significantly improve the chance of a good outcome.



Complications:

Pneumonia can develop from either acute or chronic bronchitis. If you have chronic bronchitis, you are more likely to develop recurrent respiratory infections. You may also develop:

  • Emphysema
  • Right-sided heart failure or cor pulmonale
  • Pulmonary hypertension


Calling your health care provider:

Call your doctor if:

  • You have a cough most days or you have a cough that returns frequently
  • You are coughing up blood
  • You have a high fever or shaking chills
  • You have a low-grade fever for 3 or more days
  • You have thick, greenish mucus, especially if it has a bad smell
  • You feel short of breath or have chest pain
  • You have an underlying chronic illness, like heart or lung disease


Prevention:
  • DO NOT smoke.
  • Get a yearly flu vaccine and a pneumococcal vaccine as directed by your doctor.
  • Reduce your exposure to air pollution.
  • Wash your hands (and your children's hands) frequently to avoid spreading viruses and other infections.


References:

Braman SS. Diagnosis and management of cough: ACCP Evidence-Based Clinical Practice Guidelines. Chest. 2006;129:1S-23S.

Gwaltney JM. Acute bronchitis. In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 6th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2005:chap 58.




Review Date: 6/23/2009
Reviewed By: David A. Kaufman, MD, Assistant Professor, Division of Pulmonary Medicine, Mount Sinai School of Medicine, New York, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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Wentworth-Douglass Hospital
789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100