Pneumonia

What is...

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What is pneumonia?

Pneumonia is an infection of the lungs, the lower part of the respiratory tract.

Different germs, like viruses, bacteria, fungi, or parasites, may cause pneumonia.

These germs commonly infect the nose and throat, causing colds and other upper respiratory tract infections. Pneumonia sometimes follows an upper respiratory infection (URI), if the germs get through the body's defenses and travel down the respiratory system into the lungs.

Viruses are the most common cause of upper respiratory infections in children and also, the most common cause of pneumonia.

The viruses that commonly cause pneumonia are adenovirus, rhinovirus, influenza virus (flu), and respiratory syncytial virus (RSV).

Children under 2 years of age are especially vulnerable to pneumonia caused by the RSV virus, especially during the winter. The bacteria that most often cause pneumonia are streptococcus pneumoniae and mycoplasma.

Pneumonia can be a complication of pertussis, also known as whooping cough. Pertussis is increasingly found in teenagers and adults, but is especially dangerous in very young infants.

The time from infection until symptoms appear (incubation period) for pneumonia depends on the type of germ causing the infection.

The germs that cause pneumonia are easily passed from one person to another, primarily through coughing, sneezing, or contact with body fluids.

Symptoms

Symptoms and signs

Pneumonia often follows an upper respiratory infection (URI), where we typically see nasal congestion, sneezing and sore throat.

Typical symptoms of pneumonia are rapid and labored breathing, cough, fever, chills, and just not feeling well.

Symptoms typically are worse in cases of bacterial pneumonia and may include extreme tiredness, poor appetite, nausea and vomiting, especially after prolonged coughing.

Younger children may make a grunting sound when they breathe out (expiration) because they need to force the air out of their lungs. The muscles in their neck, between their ribs, and under their ribs may tighten up when they take a breath in (inspiration) to get air into the lungs. Grunting noises and muscle tightening (retracting) are serious signs, and medical attention should be sought immediately.

Most children with pneumonia start with a dry cough that turns into wet-sounding (productive) cough.

Children will often swallow the mucous into the stomach, which can cause gagging or vomiting.

Pneumonia rarely causes pain in the lungs because there are no pain receptors in the lung tissue. However, some children will complain of a stomachache when they have pneumonia. This happens because of irritation from the part of the lungs near the stomach or from swallowing mucous into the stomach.

Older children may experience chest pain, especially when taking a deep breath (inhaling) or coughing. This means that the lining around the lungs (pleura), which does have pain receptors, is affected.

Pneumonia caused by mycoplasma is called atypical or walking pneumonia because its symptoms tend to be milder. Mycoplasma also may cause more unusual symptoms, such as sore throat or headache, and the symptoms tend to last longer.

Children with a history of asthma will often experience a worsening of their asthma symptoms when they are infected with mycoplasma.

Complications

Complications

Pneumonia in children can cause serious complications.

It can lead to dehydration (not enough fluid in the body), if the child is drinking enough fluids.

Children who are dehydrated will be very thirsty, have dry mucus membranes in the mouth, fatigue, irritability and not make as much urine as usual (in infants, this means not many wet diapers). Occasionally, dehydration may need to be treated with intravenous (in the vein) fluids at the hospital.

Viral pneumonia may be accompanied by symptoms in the gastrointestinal system such as vomiting and diarrhea. In turn, this increases the chance of the child being dehydrated.

Occasionally pneumonia can cause a build-up of fluid in the chest cavity (effusion) that sometimes has to be drained.

If left untreated, bacterial pneumonia can cause a very serious infection in the blood (sepsis) requiring immediate hospitalization.

When sepsis occurs, the child will have a high fever, lots of difficulty breathing, and look very ill.

Home treatment

Treatment / What you should do

If you think your child may have pneumonia, you should talk with a doctor or his staff.

Consult a doctor if your child is breathing fast, having a hard time breathing, has a pale or bluish skin color, or has worsening cough with fever.

The doctor will listen to your child's chest with a stethoscope, and may decide to do some blood tests. It is often necessary to x-ray your child's lungs to know whether or not she has pneumonia.

If your child has pneumonia, the x-ray will show congestion, or fluid, in one or both lungs.

The doctor may be able to determine whether the pneumonia is caused by a virus or bacteria based on the physical exam and tests that he orders.

If a virus is the cause of the pneumonia, antibiotics will not be effective. Other medicines can be helpful for some cases of viral pneumonia. Bacterial pneumonia is treated with antibiotics, usually for 7-10 days. This can take place at home, or in a hospital, depending on your child's general condition.

If the child is very ill, it is more appropriate to admit the child to the hospital, so that antibiotics can be given intravenously. In this case, it will also be possible to provide fluids to your child right into a vein, especially when he is showing signs of dehydration.

If you treat your child with antibiotics at home, it is important to give your child the antibiotics exactly as the doctor has prescribed, and to complete the entire course of treatment.

Children with pneumonia often don't want to eat as much as usual, to the point where they will not eat any solid food. However, it is important to give the child lots of fluids to prevent dehydration. In addition to drinks, offer soups, gelatin, and popsicles. If you suspect that your child may have become dehydrated, and you are unable to get them to drink enough fluids, you should also check in with a doctor. If the child has a fever, you can give the child a medicine to bring the fever down, such as acetaminophen or ibuprofen.

Do not give a child any medicine that may suppress the cough without first consulting a doctor. Remember that coughing is the body's way of clearing the respiratory tract of mucous and secretions caused by the infection. These cough medicines often are not that helpful anyway.

Children with a history of asthma who get pneumonia often need to increase how much of their asthma medicines they take or to take different ones. Ask your doctor about this.

Consult a doctor whenever your child's condition worsens, the fever increases, or if your child does not significantly improve after 2 days of antibiotic treatment.

Prevention

Prevention

It is difficult to prevent children from becoming infected with the viruses or bacteria that cause pneumonia.

If siblings or other family members have a respiratory infection, it usually spreads to others through coughing, sneezing, or hand contact. Be sure that everyone washes hand frequently.

If your child is less than 6 months of age, and, therefore, at higher risk for serious RSV pneumonia, try to avoid people with colds or coughs. When your child has an upper respiratory infection with a fever, he should remain at home.

If a family member has been diagnosed with a Mycoplasma infection (walking pneumonia), and other family members are coughing, your doctor should also consider treating the other family members with antibiotics.

Remember that the best way to prevent any kind of infection is to be in good health -- that means eat properly, get enough sleep, and exercise regularly!

Vaccines will protect against some types of pneumonia. Vaccination against pneumococcus and pertussis are recommended for all children to protect against these common bacterial pneumonias.

Each year, an influenza vaccine (flu shot) should be given to all children between the ages of 6 and 59 months and to children with chronic heart or lung conditions.

Premature babies and infants with heart or lung problems should be given special medicine that protects against the RSV virus. People who have not been vaccinated against pertussis and are exposed to children with whooping cough usually should be treated with antibiotics to prevent infection.

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