Final answer:
Membrane rupture can be determined through visual examination for fluid leakage and the nitrazine paper test, which tests for an increase in pH indicative of amniotic fluid.
Step-by-step explanation:
Two ways to determine whether amniotic membranes have truly ruptured are:
- Visual examination: Medical professionals look for signs of fluid leakage, which may be continuous or a sudden gush. This visual assessment helps confirm membrane rupture.
- Nitrazine paper test: This test involves using nitrazine paper, which changes color in response to pH levels. Amniotic fluid is typically more alkaline than normal vaginal secretions; a positive result would show a color change indicating higher pH, suggesting the membranes have ruptured.
By understanding the mechanism of amniotic membrane rupture in response to excessive pressure, primarily from the fetal head entering the birth canal, healthcare providers can assess membrane integrity. It's important to correctly determine membrane status to manage labor and prevent infection.