Atelectasis is a collapse in part of the lungs. Normally, air passes through the airways into small sacs of the lungs. Oxygen from the air passes through these sacs into the blood. Carbon dioxide also passes from the blood to the sacs to leave the body. With atelectasis, these sacs are collapsed. Oxygen and carbon dioxide cannot pass through the collapsed sacs.
A collapse over large areas of the lungs can lead to serious problems. In infants, atelectasis may be: Congenital—present at birthAcquired—caused by an acquired condition
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Atelectasis is not a disease. It is the result of a disease or abnormality in the body. It can be caused by: Blockage in the airways—as a result of inhaled stool during birth, an inhaled object, or a mucus plug that keeps air from moving into the lung sacsLung infections—may cause fluid build-up that blocks air to the lung sacsLack of surfactant (common in premature infants)—surfactant is a fluid that lines the inside of the lungs and helps them function properlyImpaired breathing—air is not pulled deep enough into the lungs to open all sacsDamage to nerve and muscles that control breathing—may prevent coughing, deep breathing, or yawning
Factors that increase the chance of congenital atelectasis include: Inhaled meconium or amniotic fluidProlonged or difficult laborBirth injury to the central nervous system
Children under 3 years old are more likely to develop atelectasis than older children or adults. Factors that may increase your baby’s chance of atelectasis include: Premature birthLung condition or infection—particularly if coughing is impairedInjury to chest wallHaving anesthesiaInhaling a foreign object, such as a peanut or marbleRespiratory distress syndromeBeing on ventilator—air does not move into lungs in a normal pattern
Atelectasis may not have obvious symptoms.
Larger areas of atelectasis may lead to: Rapid breathingTaking shallow breathsAgitationCoughingDecreased chest movement during breathingWheezingFeverBlueness of the skin
You will be asked about your child’s symptoms and medical history. A physical exam will be done. The doctor will listen to breath sounds.
Images may be taken of your child's bodily structures. This can be done with: Chest x-ray
may be done if an obstruction is a possibility. This is an exam of the lungs with a small tube.
Treatment will be based on the cause of the atelectasis. Some oxygen or breathing support may also be needed until the problem resolves. Treatment options include:
Steps will be taken to remove any blockage that is causing the problem.
A bronchoscopy may be done to remove an inhaled object. A thin tube-shaped tool called a bronchoscope is used. It is passed down the throat and into the lungs. Small tools can be passed through the bronchoscope to remove the object.
A bronchoscopy may also be done to remove a mucus plug.
Chest therapy can be used to help move mucus out of the lungs. There are a few different types that may be used. One option uses a rhythmic tapping on the back and chest. Certain positions will also use gravity to help mucus flow out of the body. Your baby may be placed in special positions to help move mucus out of the lungs.
This may include any or all of the following: Breathing masks or treatments to help keep airways openSuction to help remove secretionsBreathing support with ventilator—to take over or assist breathing until your baby is better
Medications may help to improve breathing or treat the underlying condition. Medications may help to: Open the airwaysTreat the disease that caused the collapseTreat an infection
Oxygen may be needed to support your baby during recovery.
Not all atelectasis can be prevented. To help reduce your baby’s chance of atelectasis, take these steps: Be careful with small objects around infants.Work with your doctor to treat or manage any lung conditions your baby has.
Take steps to avoid premature birth such as:
Get regular prenatal care.During pregnancy, eat a well-balanced diet with plenty of fruits and vegetables.Get adequate activity.
Some medical conditions or treatments increase your baby’s risk of atelectasis. Steps will be taken to prevent atelectasis such as: Medication to improve surfactant in premature babiesTreating and monitoring lung infectionsCareful management of necessary oxygen or breathing therapy in infants
Braverman M, Brown S. Congenital Atelectasis Discussion and Case Presentation.
Radiology. December 2012, 265(3);1144.
Collapsed lung (atelectasis). Cedars-Sinai website. Available at:
http://www.cedars-sinai.edu/Patients/Health-Conditions/Collapsed-Lung-Atelectasis.aspx. Accessed September 16, 2015.
What is atelectasis? National Heart Lung and Blood Institute website. Available at:
http://www.nhlbi.nih.gov/health/health-topics/topics/atl. Updated January 13, 2012. Accessed September 16, 2015.
Last reviewed September 2016 by Kari Kassir, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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