Meconium Aspiration – Types
Though meconium is released prematurely by about 20% of fetuses or babies, approximately 5% of babies that are born with the presence of meconium in the uterine amniotic fluid develop Meconium Aspiration Syndrome (MAS).
Get A 100% Free CASE EvaluationThere are a few different ways that meconium aspiration develops respiratory and other issues in fetuses and infants, such that the fetus or baby develops this clinical Syndrome. The following are all different types of respiratory difficulties caused by the inhalation/presence in the lungs while the fetus was still in the womb, or during or after the baby’s delivery.
One of the ways that a fetus or baby can develop respiratory complications from inhaling meconium is when the meconium blocks the fetus’ airways. Meconium can block the airways completely or partially.
Such airway blockage can result in “ball valve obstruction” or atelectasis. These are terms used when airways allow air to come into the lungs but not to exit, causing the build-up of excess air, possible hyper-expansion, or, in the case of atelectasis, the collapse of the lung(s). Any build up can create pressure in the airways, and such pressure can rupture alveoli, cause pulmonary air leakages, or allow air into the soft tissues, which can cause interstitial emphysema. Extreme ball valve obstruction or atelectasis can create even more severe problems such as tension pneumothorax (excess buildup of air between the lungs and chest cavity), which can cause circulatory issues and even potentially cardiac arrest. Other serious problems of any airway obstruction include persistent pulmonary hypertension (which increases the workload on the heart) and pneumomediastinum (the problematic presence of air in the organs in the chest cavity other than the lungs).
Airway Blockage
Meconium is a viscous and thick substance, and the thicker it is, the more likely the fetus or baby can develop more severe complications.One of the ways that a fetus or baby can develop respiratory complications from inhaling meconium is when the meconium blocks the fetus’ airways. Meconium can block the airways completely or partially.
Such airway blockage can result in “ball valve obstruction” or atelectasis. These are terms used when airways allow air to come into the lungs but not to exit, causing the build-up of excess air, possible hyper-expansion, or, in the case of atelectasis, the collapse of the lung(s). Any build up can create pressure in the airways, and such pressure can rupture alveoli, cause pulmonary air leakages, or allow air into the soft tissues, which can cause interstitial emphysema. Extreme ball valve obstruction or atelectasis can create even more severe problems such as tension pneumothorax (excess buildup of air between the lungs and chest cavity), which can cause circulatory issues and even potentially cardiac arrest. Other serious problems of any airway obstruction include persistent pulmonary hypertension (which increases the workload on the heart) and pneumomediastinum (the problematic presence of air in the organs in the chest cavity other than the lungs).