Categories

A sample text widget

Etiam pulvinar consectetur dolor sed malesuada. Ut convallis euismod dolor nec pretium. Nunc ut tristique massa.

Nam sodales mi vitae dolor ullamcorper et vulputate enim accumsan. Morbi orci magna, tincidunt vitae molestie nec, molestie at mi. Nulla nulla lorem, suscipit in posuere in, interdum non magna.

About Meconium Aspiration (MAS) – Part 1

• MAS can happen before, during, or after labor.
• It can happen even after delivery when a newborn inhales (or aspirates) a mixture of meconium and amniotic fluid.
• Meconium is the baby’s first feces, or poop.
• This is sticky, thick, and dark green substance.
• It is typically passed in the womb during early pregnancy and again in the first few days after birth.
• The inhaled meconium can partially or completely block the baby’s airways.
• The meconium becomes trapped in the airways when the baby breathes out.
• The inhaled meconium irritates the baby’s airways and makes it difficult to breathe.
• MAS can affect the baby’s breathing in a number of ways.

This includes:
• Chemical irritation to the lung tissue.
• Airway obstruction by a meconium plug.
• Infection.
• The inactivation of surfactant by the meconium.

The severity of MAS depends on the amount of meconium the baby inhales as well as underlying conditions.
• The conditions can be infections within the uterus or post maturity
• The more meconium a baby inhales, the more serious the condition.
• The fluid is moved in and out of only the trachea when there’s breathing activity in the fetus
• Meconium can be inhaled into the lungs when the baby gasps while still in the womb
• This can be during the initial gasping breaths after delivery
• This gasping typically happens when there has been a problem
• This is like an infection or compression of the umbilical cord that causes the baby to have difficulty getting enough oxygen in the womb

Incidence

• Not all infants who pass meconium during labor and delivery develop MAS
• Of the babies who either pass meconium during birth or are delivered having meconium-stained fluid, 2% to 36% either inhale the meconium in uteri or with the first breath
• Of the infants born with meconium-stained amniotic fluid, 11% of them experience some degree of MAS.

Causes of Meconium Aspiration

• MAS is often related to fetal stress.
• Fetal stress can be caused by problems in the womb, such as infections, or by difficulties during the labor process.
• A distressed baby may experience hypoxia (decreased oxygen), which may make the baby’s intestinal activity increase.
• This may cause relaxation of the anal sphincter.
• This relaxation then moves meconium into the amniotic fluid that envelops the baby.
• But meconium passage during labor and delivery isn’t always associated with fetal distress.
• Babies who aren’t distressed during the birth process pass meconium before birth.
• In either case, a baby that gasps or inhales meconium can develop MAS.

Risk Factors for Meconium Aspiration

• Mother who had a difficult delivery.
• Mothers with advanced gestational age (or postmaturity).
• A mother who smokes heavily.
• Mother who has special conditions like diabetes, high blood pressure (hypertension), or chronic respiratory or cardiovascular disease.
• Deliveries with umbilical cord complications.
• Cases of poor intrauterine growth.

Nursing Diagnosis Handbook The Birth Partner, Third Edition Meconium Aspiration Syndrome

Leave a Reply

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>