Meconium Aspiration Syndrome

Meconium aspiration syndrome (MAS) happens when a baby breathes in meconium-stained amniotic fluid before or during birth. This can make it hard for the newborn to breathe and may require special care.

Many babies recover, but in serious cases, MAS can lead to lasting breathing problems or other complications. If warning signs were missed, families may be eligible for compensation for medical costs and long-term support.

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Why Take Legal Action?

By filing a birth injury lawsuit, you can seek financial compensation to provide your child with the care they need to live their best life.

Results Secured

  • $10.4 million for a Pennsylvania child with cerebral palsy
  • $5 million for a Massachusetts child with brain damage
  • $4.5 million for a child in Illinois with Erb’s palsy
Rae Theodore

Written by: Rae Theodore

Last updated:

A photo of our team member Katie Lavender smiling.

Fact-Checked and Legally Reviewed by: Katie Lavender, RN

What Is Meconium Aspiration?

Meconium aspiration syndrome happens when a newborn breathes in meconium — the baby’s first stool — mixed with amniotic fluid. This can occur if a baby becomes stressed during labor, passes meconium before birth, and takes a breath.

Once inside the airways, meconium can block normal airflow and irritate the lung tissue, making it harder for the baby to get enough oxygen.

Most babies with MAS recover well when the condition is recognized and treated quickly. However, delays in responding to fetal distress or meconium-stained fluid can increase the risk of serious complications. In these cases, medical negligence may have occurred.

The birth injury lawyers in our network have secured over $1 billion for families nationwide. Our legal partners are supported by registered nurses and decades of medical case experience.

They work on a contingency basis, meaning you pay nothing up front and nothing unless compensation is recovered for your family.

You don’t have to figure this out alone. Get a free case review right now to find out whether a top meconium aspiration syndrome attorney may be able to fight for you.

Meconium Aspiration Compensation

When meconium aspiration syndrome is linked to delays in care, missed signs of fetal distress, or a postponed C-section, families may be able to seek compensation to help cover medical treatment, therapy, and long-term support.

The average birth injury settlement is over $1 million, providing the critical financial support many families need. Our legal partners have helped families across the country pursue justice in cases involving meconium aspiration injuries.

While every case is unique, these outcomes show what may be possible:

  • $14.5 million to a Pennsylvania child for severe brain damage after providers failed to respond to fetal distress and thick meconium
  • $4.1 million in New York for a newborn who suffered hypoxic brain injury after inhaling meconium during birth
  • $3.25 million in Massachusetts after a delayed C-section despite clear signs of fetal distress and meconium-stained fluid
  • $6 million in New York for a child diagnosed with cerebral palsy and brain damage after providers ignored heavy meconium and delayed performing a C-section

“My child was born not breathing and required resuscitation. The complications resulted in brain damage and a cerebral hemorrhage. We were lost and didn’t know what to do. The law firm has been a beacon of hope in this incredibly dark time for our family.”

– New Hampshire parent who worked with our partner firm

If your child has been diagnosed with MAS, financial assistance may be available. Birth injury compensation can cover ongoing medical treatment and specialist visits, medical equipment, and lost income if a parent must stop working to provide care.

Call (888) 726-9160 right now or chat with a case manager to see if we may be able to help you pursue a meconium aspiration syndrome settlement.

Causes of Meconium Aspiration Syndrome & Medical Negligence

Meconium aspiration usually begins with fetal distress before or during labor. When a baby is under stress, they may release meconium into the amniotic fluid and then inhale it into their lungs during delivery. This can make breathing difficult immediately after birth.

Not every case of meconium aspiration syndrome can be prevented. However, some cases are made worse when medical professionals fail to recognize and respond to signs of distress during labor and delivery.

Examples of negligence in meconium aspiration syndrome cases include:

  • Delaying transfer to a neonatal intensive care unit (NICU) for babies showing respiratory distress
  • Failing to perform timely suctioning or intubation in a newborn with airway blockage
  • Ignoring abnormal heart rate patterns showing fetal distress
  • Not identifying or documenting meconium-stained amniotic fluid during labor
  • Skipping critical interventions like neonatal resuscitation or mechanical ventilation in severe MAS

Delivery teams are trained to monitor fetal heart patterns, manage meconium-stained fluid, and act quickly if a newborn is struggling to breathe. When they fail to do so, the risk of brain injury and other complications of meconium aspiration are increased.

“Unless educated by the medical team, a mother may not know their baby has passed meconium before delivery. You will know there is meconium in the amniotic fluid if the fluid is discolored in shades of yellow, green, or brown. The more stool that is passed, the darker and thicker the amniotic fluid will appear.”

– Katie Lavender, RN, LawFirm.com medical expert

When medical negligence leads to an avoidable birth injury, a meconium aspiration birth injury lawsuit can help hold health care providers accountable and provide financial support for your child’s care and future needs.

Meconium Aspiration Syndrome Symptoms

Meconium aspiration syndrome symptoms usually appear at birth or shortly afterward. Babies may show signs of breathing difficulty that require immediate medical support.

Symptoms of meconium aspiration include:

  • Abnormal yellow-brown secretions from the mouth or nose
  • Cyanosis (bluish skin from low oxygen)
  • Grunting or wheezing sounds
  • Labored breathing with chest retractions (chest pulling in)
  • Limpness after birth
  • Rapid or labored breathing
  • Respiratory distress requiring oxygen support

Diagnosis of meconium aspiration syndrome typically involves chest X-rays to look for meconium in the lungs and blood tests to check oxygen and carbon dioxide levels.

Early recognition and treatment are essential. When signs of respiratory distress are missed or minimized, a baby may not get the oxygen they need, increasing the risk of brain injury or other birth injuries.

How Neonatal Aspiration of Meconium Affects the Lungs

Meconium aspiration syndrome happens when a baby becomes stressed before or during birth and passes meconium (their first stool) into the amniotic fluid. If the baby then breathes in this mixture, meconium can enter the lungs and make it difficult to breathe.

Here’s what happens inside the lungs:

  1. Meconium in the amniotic fluid: When a baby is under stress during labor, they may release meconium before birth.
  2. Breathing meconium into the airways: If the baby takes a breath or gasps while surrounded by meconium-stained fluid, it can enter and block the airways.
  3. Irritation of the lungs: Meconium can inflame and irritate the delicate lung tissue, making it harder for the baby to breathe normally.
  4. Reduced lung function: Meconium can interfere with surfactant, a natural substance that helps the lungs stay open, leading to breathing difficulties and respiratory failure.
  5. Possible infection: If bacteria are present in the meconium, it can contribute to infection in the lungs.

These factors can limit how much oxygen the baby receives. Without quick treatment, this lack of oxygen can cause serious complications. That’s why monitoring fetal distress and responding promptly during labor are critical to preventing harm.

If you’re unsure whether more could have been done during your delivery, our on-staff registered nurses can help you understand what happened. Get started with a free case review.

Meconium Aspiration Syndrome Risk Factors

Meconium aspiration can happen in many types of deliveries, but certain situations make it more likely. A risk factor does not mean MAS will occur — only that the baby may need closer monitoring during labor and delivery.

Common meconium aspiration risk factors include:

  • Complicated or prolonged labor: Situations like a long labor, umbilical cord problems, or difficult vaginal deliveries can increase stress on the baby.
  • Fetal distress: Abnormal fetal heart rate patterns during labor can signal stress and may trigger early stool release.
  • Inadequate monitoring or response: When signs of fetal distress or the presence of meconium are not addressed quickly, the chances of MAS becoming severe may increase.
  • Post-term pregnancy (past the due date): Babies are more likely to pass meconium in the womb the longer the pregnancy continues.

“Oftentimes, the baby will have the meconium fluid smeared all over their skin, and we have to wipe it down from all over the infant. You can see remnants of the stool often around the nails or crevices of the skin until the team can bathe the baby.”

– Katie Lavender, RN, LawFirm.com medical expert

Understanding these risk factors helps medical teams identify and respond to MAS early, which is critical for protecting a newborn’s breathing and oxygen levels.

Long-Term Effects of Meconium Aspiration Syndrome

Most babies recover fully from meconium aspiration syndrome, especially when the condition is diagnosed and treated right away. However, if MAS is severe or treatment is delayed, the lack of oxygen and inflammation in the lungs can lead to longer-lasting complications.

Long-term side effects may include asthma-like breathing problems or recurrent lung infections, developmental delays, learning or cognitive difficulties, and cardiovascular challenges related to past oxygen loss.

Possible complications of meconium aspiration syndrome include:

  • Atelectasis or chronic lung disease: Areas of the lungs may not fully expand, which can lead to ongoing respiratory issues.
  • Hypoxia (low oxygen) or acidosis: Extended oxygen deprivation may increase the risk of neurological or developmental challenges.
  • Infections such as sepsis: Bacteria may enter the lungs along with meconium, leading to serious and sometimes life-threatening diseases.
  • Meconium aspiration pneumonia: Meconium in the lungs triggers irritation, inflammation, and sometimes infection, making breathing more difficult and requiring antibiotics and oxygen support.
  • Persistent Pulmonary Hypertension of the Newborn (PPHN): High blood pressure in the vessels of the lungs can limit how well oxygen is delivered to the body.
  • Pneumothorax (collapsed lung): Air leaks in the chest may make breathing more difficult.

Not every child with MAS will experience these birth injuries. Many children go on to breathe, grow, and develop normally, especially when monitoring and treatment happen quickly.

If your child needs ongoing medical care, therapy, or support services as they grow, compensation from a birth injury lawsuit can help cover these costs and protect your child’s future. Get a free case review now.

Meconium Aspiration Syndrome Treatment

Treatment for meconium aspiration syndrome depends on how much meconium entered the lungs and how the baby is breathing after birth. The goal is to support the baby’s oxygen levels and reduce stress on the lungs as they heal.

Meconium aspiration syndrome treatments may include:

  • Airway suctioning: Meconium cleared from the mouth and nose
  • Antibiotics: Given if meconium aspiration pneumonia or infection is suspected
  • ECMO (Extracorporeal Membrane Oxygenation): Provided when other treatments are not enough, allowing the lungs time to rest by using this machine that pumps blood outside the body for oxygenation, and then returns it to the body
  • Mechanical ventilation or intubation: Used in more serious cases to help the baby breathe by having a machine provide breaths, oxygen, and pressure to keep the lungs open
  • Nitric oxide therapy: Relaxes blood vessels in the lungs when PPHN (persistent pulmonary hypertension of the newborn) is present
  • Oxygen therapy: Helps correct cyanosis (bluish skin) and improve blood oxygen levels
  • Surfactant therapy: A medication that aids in helping the lungs stay open and improves airflow

Most babies are cared for in a neonatal intensive care unit (NICU), so their breathing, oxygen levels, and heart function can be closely monitored. With timely treatment and the right care team, many newborns recover and go on to breathe normally.

Get Help From an Aspiration of Meconium Lawyer

Caring for a baby with meconium aspiration syndrome can be overwhelming, especially if your child is facing long-term medical needs. If you believe delays or mistakes during labor or delivery contributed to your child’s condition, you don’t have to navigate this alone.

LawFirm.com has a network of birth injury lawyers who can help families in all 50 states seek justice and compensation for meconium aspiration syndrome. They never charge any upfront costs or hourly fees.

The meconium aspiration attorneys we work with can:

  • Determine if medical negligence occurred
  • Estimate lifetime care costs for your child
  • Fight for the maximum compensation

Legal action can’t change what happened, but it can help secure resources for treatment, therapy, and your child’s future. Our legal partners have already recovered over $1 billion for children with preventable birth injuries.

Call (888) 726-9160 right now or get a free case review to see if they may be able to seek money for you, too.

Meconium Aspiration Syndrome FAQs

Meconium aspiration syndrome (MAS) happens when a newborn breathes in meconium — the baby’s first stool — mixed with amniotic fluid before, during, or right after birth.

The meconium can enter the lungs and make it hard for the baby to breathe, sometimes requiring care in the neonatal intensive care unit (NICU). Most babies recover with timely treatment, but some children suffer long-term health problems when care is delayed or mismanaged.

If you believe that more could have been done to protect your child’s health, we may be able to help. Get started with a free case review.

Most babies who receive prompt treatment for meconium aspiration syndrome recover fully. However, if breathing problems were severe or oxygen levels were low for a period of time, some children may experience long-term effects.

Meconium aspiration syndrome symptoms include:

  • Asthma-like breathing issues
  • Developmental or learning delays
  • Recurring lung infections

Regular follow-up care can help your child’s breathing and overall development as they grow. When meconium aspiration syndrome is tied to medical negligence, families may be eligible for compensation to help with these costs.

Call (888) 726-9160 right now or chat with a case manager to see if you may qualify.

The management of meconium aspiration syndrome focuses on helping a baby breathe and maintaining healthy oxygen levels.

Meconium aspiration syndrome management may involve:

  • Clearing the airways
  • Providing extra oxygen
  • Using a CPAP or ventilator for breathing support
  • Giving medications like surfactant or antibiotics if needed

In severe cases, babies may receive nitric oxide therapy or ECMO to help the lungs recover. Most newborns are cared for in a neonatal intensive care unit where their breathing and oxygen levels can be closely monitored.

Treatment for meconium aspiration syndrome focuses on helping the baby breathe comfortably and keeping oxygen levels stable. Right after birth, doctors will assess the baby’s breathing and use suctioning to clear any meconium that may be blocking the airway.

The baby may receive extra oxygen, gentle breathing support like CPAP that provides pressure to open up the lungs, or temporary help from a ventilator if needed. In some cases, medications such as surfactant or nitric oxide are used to help the lungs work more effectively.

Your doctor can explain how to treat meconium aspiration syndrome based on your baby’s condition and what their lungs need to heal. Don’t hesitate to ask questions — you deserve to understand every part of your child’s care.

If a baby “eats” or inhales meconium during or before birth, the meconium can enter the lungs and make it difficult to breathe, which is a condition called meconium aspiration syndrome (MAS).

The lungs may become irritated or blocked, and the baby may need breathing support, oxygen, or other treatment in the neonatal intensive care unit (NICU). Most babies recover well when MAS is recognized and treated quickly.

Meconium aspiration syndrome recovery time varies. Some newborns improve within a few days, while others may need a longer stay in the NICU and follow-up care after going home.

The meconium aspiration syndrome survival rate is generally very high, especially when babies receive prompt care in a neonatal intensive care unit (NICU).

Most babies with mild or moderate MAS recover fully. Even in severe cases, survival rates have improved, and many infants go on to breathe and develop normally with the right treatment and follow-up support.

The exact outlook depends on:

  • How quickly breathing support was provided
  • Whether complications like PPHN (persistent pulmonary hypertension of the newborn) or infection were present
  • Your baby’s overall health and response to treatment

When health care providers fail to act quickly, children can suffer serious MAS complications. When that happens, families may be entitled to compensation from a medical malpractice lawsuit.

Get a free case review to learn about your legal options and take the first step toward compensation and justice.

A photo of our team member Katie Lavender smiling.

Fact-Checked and Legally Reviewed by: Katie Lavender, RNRegistered Nurse

  • Editor

Katie Lavender has over 8 years of experience as a registered nurse (RN), providing direct care to mothers and babies after childbirth. She brings her hands-on experience in the field of labor and delivery to the LawFirm.com team, helping ensure that our birth injury content is correct and up to date.

Rae Theodore

Written by: Rae Theodore

Rae Theodore is a writer and editor with more than 30 years of experience in legal publishing. She earned a bachelor’s degree in English from Pennsylvania State University.

Last modified:
  1. American Academy of Pediatrics. (2017, March 1). “Non–Delivery Room Management of Meconium Aspiration Syndrome.” NeoReviews, 18(3), e161–e165. Retrieved from: https://publications.aap.org/neoreviews/article/18/3/e161/88458/Non-Delivery-Room-Management-of-Meconium.
  2. Cleveland Clinic. (2023, January 17). “Meconium Aspiration Syndrome: Causes, Treatment & More.” Retrieved from: https://my.clevelandclinic.org/health/diseases/24620-meconium-aspiration-syndrome.
  3. Johns Hopkins Medicine. (n.d.). “Meconium Aspiration Syndrome.” Retrieved from: https://www.hopkinsmedicine.org/health/conditions-and-diseases/meconium-aspiration-syndrome.
  4. KidsHealth from Nemours. (n.d.). “Meconium Aspiration Syndrome (MAS) (for Parents).” Retrieved from: https://kidshealth.org/en/parents/meconium.html.

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