A woman's amniotic fluid is noted to be greenish color. The nurse interprets this finding as which of the following?

Choice A rationale Normal amniotic fluid is typically clear and colorless, occasionally containing white flecks of vernix caseosa or lanugo. A greenish discoloration is an abnormal finding that strongly suggests the presence of meconium, the infant's first stool, which is a mix of intestinal secretions, swallowed fluid, and cellular debris, indicating a change from the normal physiological state. Choice B rationale A greenish-colored amniotic fluid is most commonly caused by the passage of meconium (fetal stool) into the amniotic fluid. This usually occurs in response to fetal stress (such as hypoxia or cord compression), which stimulates the fetal vagus nerve, increasing peristalsis and relaxing the anal sphincter. The risk of Meconium Aspiration Syndrome is a major concern. Choice C rationale Transient fetal hypoxia (a temporary decrease in oxygen to the fetus) may indeed cause meconium passage, but the green color is the result of the meconium, not the hypoxia itself. The nurse is interpreting the physical finding of color. Fetal hypoxia would manifest as changes in the fetal heart rate pattern, such as late or variable decelerations. Choice D rationale While infection (chorioamnionitis) is a concern, amniotic fluid associated with infection is typically described as yellow, cloudy, and often foul-smelling due to the presence of pus and bacteria. A greenish color strongly points to meconium. However, meconium passage can increase the risk of subsequent infection due to the irritant nature of the contents.