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Bronchiolitis: Symptoms, Causes & Treatment

May 4th 2020 at 1:23 PM

What is Bronchiolitis?

Bronchiolitis is an inflammatory lung condition that affects the bronchioles (the smallest airways in the lungs). Bronchioles control the lungs’ airflow. When they’re damaged or infected, they may become clogged, swollen and scarred. This then blocks oxygen flow.

There are two types of bronchiolitis; one that is more common among infants and young children and another that is only seen in adults:

  • Viral bronchiolitis – Occurs in infants and very young children and brought on by viruses that attack the bronchioles
  • Bronchiolitis obliterans – Affects adults and is linked to exposure to certain chemicals, prior respiratory infection or connective tissue disease

Most cases of viral bronchiolitis don’t require medical intervention. However, understanding symptoms can help parents and caregivers determine when to seek emergency care for their children. In addition, since bronchiolitis obliterans can develop into a chronic condition that causes permanent scarring in the lungs, recognizing it and addressing it early can help improve outcomes. Medication, changing a person’s breathing environment, supplemental oxygen and even dietary supplements can help ease bronchiolitis.

Bronchiolitis Symptoms

Symptoms of bronchiolitis in children usually start out with what seems like a common upper respiratory infection and then spreads deeper into the lungs. Before bronchiolitis develops, a baby or young child may experience:

  • Fussiness
  • Cough
  • Runny or stuffy nose
  • Irritability
  • Low grade fever (usually under 101.5 degrees F)
  • Trouble feeding or a poor appetite
  • Vomiting

Take your baby in for immediate care or call your doctor if you observe any of these symptoms:

  • Difficulty breathing
  • Wheezing
  • Pauses in breathing
  • Working really hard to breathe
  • Breathing very shallow or fast
  • Nostril flaring
  • Whistling noises while exhaling
  • Seeing the ribcage cave in when your baby breathes in
  • Extreme inactivity or sluggishness
  • Refusing to drink or eat
  • Dehydration (having dark urine, or too few wet diapers)
  • Hypothermia (lower than the usual temperature)
  • Purple or blue lips or fingertips

Brochiolitis in adults, which is very different, may start six to eight weeks after a prior respiratory infection or exposure to certain inhaled chemicals. Symptoms progress and worsen slowly over time and include:

Symptoms of Brochiolitis PIN IT

Causes of Bronchiolitis

Viral Bronchiolitis Causes

Viral bronchiolitis, the type that usually affects young children, is caused by viruses that infect the lungs such as:

  • Respiratory Syncytial Virus (RSV) – This virus is the most common cause of bronchiolitis and mostly affects babies under 1 year old — most cases occur during the winter and spring months
  • Rhinovirus – This is the virus that causes the common cold
  • Influenza viruses – These bring on inflammation in the nose, throat and lungs — influenza attacks both children and adults and is particularly dangerous for babies with weakened immune systems
  • Adenoviruses – These viruses attack mucous membranes and are responsible for about 10 percent of severe lung infections in children

Viral bronchiolitis affects children aged 2 and under, though it usually occurs in infants aged 3-9 months. Some risk factors for bronchiolitis in children and infants include:

  • Exposure to second-hand cigarette smoke
  • Having a weakened immune system
  • Being in crowded spaces, such as daycare centers, where there’s a virus
  • Not being breastfed
  • Premature birth or being born with a lung or heart condition

Bronchiolitis Obliterans Causes

This rare condition sometimes occurs without a clear cause. It can be severe, leading to death if untreated in some cases. Here are some possible causes of bronchiolitis obliterans:

  • Negative reactions to medications
  • Respiratory infections
  • Fumes from chemicals such as bleach, chlorine and ammonia
  • Reaction to a bone marrow, lung or heart transplant (when this happens, the condition is called “bronchiolitis obliterans syndrome”)

In adults, bronchiolitis risk factors include:

  • Smoking cigarettes
  • Having an autoimmune connective tissue condition
  • Being exposed to dangerous chemicals at work

Bronchiolitis vs. Bronchitis

Bronchiolitis and bronchitis are related conditions that affect the airways. However, they occur in individuals at different ages and in different areas of the lungs.

Bronchiolitis mostly affects toddlers and infants aged 2 and under and is caused by inflamed bronchioles that accumulate mucus, making it difficult to breathe. On the other hand, bronchitis mostly affects adults and older children. It leads to inflammation of the upper airways — the upper bronchial tubes and trachea.

Additionally, bronchiolitis normally disappears within a few weeks while bronchitis may turn into a chronic (long-term) problem, and is often triggered by lung irritants such as cigarette smoke. Both conditions, however, may be caused by a virus.

Bronchiolitis Home Remedies

Since bronchiolitis can cause breathing failure, keeping in touch with a medical professional and following his or her instructions is advised. Treatment of bronchiolitis includes managing viral and respiratory symptoms to promote better oxygen flow and allow the body to heal. In some cases, medication must be prescribed. Certain dietary supplements can also support the immune system and reduce severity of symptoms.

Hydration

Children and adults with bronchiolitis will likely eat and drink less often than usual. While it’s not necessary for them to drink more fluids than usual, preventing dehydration is important. For toddlers and older children, keep water, juice or an electrolyte drink on hand at all times and give them a sip often. For infants, give them the bottle or breast regularly when they’re awake.

If you’re concerned that your child isn’t drinking or eating enough, take them to a doctor. The doctor can recommend a non-prescription electrolyte drink specifically made for children or can ask you to bring the child in for IV fluids.

If an adult or child prefers food to drink, these foods contain lots of water and electrolytes that can help keep them hydrated:

  • Peaches
  • Strawberries
  • Citrus fruits
  • Melons such as watermelon and cantaloupe
  • Cucumbers, zucchini and celery
  • Tomatoes and lettuce
  • Broth and soups
  • Cauliflower and cabbage
  • Bell peppers

Keep Airways Clear

You may want to clear mucus from your child’s nose or mouth. This can make breathing easier for them and can affect how much oxygen gets into their bloodstream.

You can use suction tools like suction bulbs or, alternatively, other over-the-counter options such as Nose Frida. Using suction bulbs, you can also carefully remove mucus from your baby’s mouth.

You can also use saline drops to clear mucus from your child’s nose so he or she can breathe clearly. If you have an infant, use saline drops before using suction bulbs, so it’s easier to suction the mucus out. Older children can use saline drops before blowing the nose to get more mucus out.

Reduce Fever

If your child has a fever, speak to your doctor about how best to treat it. Children under the age of 19 should not take aspirin or aspirin-containing products.

However, there are various ways to naturally relieve a fever that can be safe for babies and young children, as well as older children and adults. Basic tips include a lukewarm bath, giving them ice pops or cold drinks and a cold compress on the forehead.

Use a Humidifier

Using a humidifier is also a safe, short-term way to help people with bronchiolitis breathe more easily. However, humidifiers can cause respiratory illnesses and other issues if they’re not clean or used properly. Follow the directions for use on the humidifier and also ensure it’s clean.

Remove Airborne Irritants

It’s also recommended that you avoid possible air irritants at home, such as:

SEE ALSOYeast Infection CONDITIONS Yeast Infection: Symptoms, Causes & Treatment

 

  • Smoke
  • Fumes
  • Dust
  • Chemicals
  • Cold air
  • Allergens

Dietary Supplements

Vitamin D

Research suggests that vitamin D plays a critical role in helping the immune system fight off viral infections.

In one study of young children, researchers found that those with a genetic variation that prohibited them from properly metabolizing vitamin D had more cases of acute lower respiratory infections like bronchiolitis. This suggests that vitamin D does in fact play a role in the body’s ability to fight infections.

Other studies suggest that treating vitamin D deficiencies can help lower the risk for severe respiratory diseases in young children.

You can find vitamin D drops over the counter for your infant or toddler, while adults and older children can take it in pill or capsule form. Check with a healthcare provider for proper dosage.

N-Acetylcysteine (NAC)

N-acetylcysteine (NAC) has been shown in studies to support the respiratory system and help with the recovery of lung conditions including bronchiolitis. Not only is NAC a precursor to the antioxidant glutathione, it works to clear mucus out of the lungs.

One study showed that NAC given via a nebulizer helped children feel better quicker and get discharged from the clinic earlier than those who were given the drug salbutamol.

As a general dietary supplement, the recommended dosage is 600mg taken up to three times per day. However, if you are your child is sick, it’s very important to discuss proper dosage and administration with a healthcare provider first.

Medical Treatment

Viral bronchiolitis in children can usually be treated at home but sometimes requires medical intervention including hospitalization. Treatment depends on the severity of the condition and the overall health of the child. It can include:

  • Intravenous fluids to re-hydrate
  • Supplemental oxygen
  • Inhaled medications to open airways
  • Antibiotics in the presence of a bacterial infection

Medical treatment for bronchiolitis obliterans is a little different and depends on the underlying cause. Some ways this condition is treated is through:

  • Macrolide antibiotics
  • Corticosteroids
  • Immunosuppressant drugs
  • Lung transplant

The Bottom Line

Bronchiolitis refers to a condition of inflamed bronchioles. Infants and very young children are susceptible to the viral type. Several viruses, most commonly RSV, can lead to what at first seems like a common cold but later causes breathing difficulties. Children with this type of bronchiolitis usually recover at home through rest, hydration, and management of symptoms.

Bronchiolitis obliterans, on the other hand, affects adults and has different underlying causes. This condition can arise from inhaling chemicals, smoking, or be the result of an autoimmune disease. Sometimes the cause is unknown. Like viral bronchiolitis, this type causes breathing difficulties. Unlike the viral kind, however, it can cause scarring of the bronchioles and become chronic. Treatment depends on the cause and includes medications and lung transplant in some cases.

Vitamin D can help boost the immune system and help fight viruses while NAC has been shown in studies to help improve breathing for people with acute and chronic lung conditions.

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