Pregnant expectant mothers work very hard, not only enduring the physical discomfort caused by pregnancy, but also worrying about the health and safety of the fetus. Some fetuses may experience meconium aspiration syndrome, which poses a threat to their life safety and may also affect the safety of expectant mothers. Why does meconium aspiration syndrome occur?
There are many factors that can cause meconium aspiration syndrome, and the most common one is the excretion and inhalation of meconium. When the fetus experiences hypoxia symptoms in the uterine cavity or during delivery, defecation occurs, leading to contamination of amniotic fluid by feces. In a state of hypoxia, the fetus will inhale amniotic fluid mixed with meconium into the trachea and lungs, leading to the phenomenon of meconium aspiration syndrome.
Pulmonary arterial hypertension is also an important cause of meconium aspiration syndrome. When the fetus suffers from severe hypoxia and mixed acidosis, it can lead to pulmonary vasospasm. Under the action of pulmonary arterial hypertension, the fetus will have long-term hypoxemia, forming a vicious cycle, and meconium aspiration syndrome occurs.
In addition, chemical inflammation can also cause meconium aspiration syndrome. This phenomenon often occurs within 24-48 hours postpartum. Under the stimulation of meconium, the local bronchi and alveoli of the fetus will develop chemical inflammation, leading to ventilation dysfunction and thus causing meconium aspiration syndrome.
