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A doctor is concerned about a lung plug

Mucus Plugs: When to Be Concerned

Mucus plugs basically break down into two categories: the good ones, in the cervix, and the bad ones, in the lungs. Regardless of where they form, the sudden appearance of a tube of condensed mucus can be quite alarming. And while there are many reasons to concerned when a mucus plug forms in the lungs, most pregnant women have nothing to be worried about when their mucus plug finally comes out. 

Cervical Mucus Plugs

Cervical mucus plugs form using the secretions from the cervix. A big, gelatinous tube of mucus about the size of the cervical canal forms as a bacteria barrier to prevent pathogens from reaching the uterus and fetus. While losing a mucus plug can indicate that labor might be close, usually it’s a pretty good bet that you still have some time to get your affairs in order. 

As the cervix dilates and thins, the mucus plug usually comes out on its own. Sometimes it comes out as one big glob of cervical goop. Other times, it may come out slowly in bits and pieces. Some women don’t expel their mucus plug until they are literally ready to have a baby. Others may lose it up to a couple of weeks beforehand. Generally, these mucus plugs are a tan or white color. Sometimes there may be a faint tinge of blood, from the cervix.

This isn’t necessarily something to worry about. However, experts suggest that if the pregnancy has not yet reached 36 weeks, it’s probably a good idea to call a doctor. If there is a lot of blood, especially if it’s well before the 36 week mark, definitely call a doctor. Some people even suggest talking to your doctor beforehand about what actions they’d like you to take in case of just such a potential emergency. But, if you’re at your due date, and the plug comes out, unless other signs of labor are present as well, just pay more attention to your body so you aren’t taken totally by surprise when labor actually does begin.

Lung Mucus Plugs

Mucus plugs in the lungs are not a natural occurrence. While similar in appearance, they form from an overproduction of mucus that the cilia in the lungs aren’t sufficiently clearing away. While a healthy adult may be able to just cough it up and carry on, it can be a very serious matter for children and people with underlying respiratory or nervous system disorders. 

Make sure you have a plan already set up before the appearance of the mucus plug. There are several techniques and machines available to help caregivers assist loved ones in trying to cough up the mucus plug. In respiratory diseases, like asthma or cystic fibrosis, mucus plugs form more easily because of the increase of mucus and more fragile respiratory systems. In the case of nervous system disorders, like Lou Gehrig’s disease or spinal muscular atrophy, they become dangerous not only because the patient is often verbally unable to seek assistance, but also because they lack the throat and abdominal strength to expel the plug. 

If you notice the lips turning blue or the skin turning bright red or blue, it’s definitely time to seek help. Ask your doctor to help you learn techniques for just such a situation, but understand it may be necessary to make an emergency call. Mucus plugs in the lungs are not to be treated lightly, especially for those who already have a fragile system. 

Last Updated: October 29, 2015