Final answer:
Neonates with meconium aspiration syndrome may show bradycardia on their EKG due to hypoxia, which is often associated with fetal distress and can lead to significant cardiovascular effects.
Step-by-step explanation:
Neonates with meconium aspiration syndrome often experience fetal distress characterized by hypoxia, which can lead to cardiovascular compromises. When considering the effects of meconium aspiration on EKG results, bradycardia may be observed due to the hypoxic event. Therefore, the answer to the question 'Neonates with meconium aspiration syndrome may show what on their EKG?' is b) Bradycardia.
The passage of meconium in the uterus and subsequent aspiration could result in labored breathing, a barrel-shaped chest, or a low Apgar score. An obstetrician may detect the aspiration through a coarse rattling sound or use blood gas tests and chest X-rays for confirmation. Moreover, inhaled meconium can lead to serious complications like airway obstruction, surfactant dysfunction, pulmonary inflammation, hypertension, and increased vulnerability to infections like pneumonia.