What is the purpose of using Nitrazine paper in labor?

Using Nitrazine paper during labor serves the specific function of assessing the pH of the fluid. This test is particularly useful for differentiating between amniotic fluid and other fluids, such as urine or vaginal secretions. Amniotic fluid has a higher pH, usually ranging from 7.0 to 7.5, which is alkaline. When Nitrazine paper comes into contact with amniotic fluid, it turns blue, indicating a pH above the neutral range.

This assessment is crucial for several reasons. It helps confirm whether the membranes have ruptured, which is essential for monitoring the baby’s well-being and planning the next steps in labor management. Identifying whether the fluid is amniotic can also inform healthcare providers about the timing and nature of labor, as well as the potential risk of infection if the membranes have been ruptured for an extended period.

In contrast, measuring fetal heart rate is done using a Doppler device or electronic fetal monitoring. Cervical dilation assessment is performed through a physical vaginal exam by the healthcare provider. The presence of meconium is checked through visual inspection of the amniotic fluid or during delivery but is not something that can be determined through the pH indication provided by Nit