What is nitrazine and fern test?

What is nitrazine and fern test?

Most studies investigating the usefulness of ferning and nitrazine methods for detecting the presence of amniotic fluid following ruptured amniotic membranes have employed samples from vaginal pooling. Reported accuracies are 84 to 100% for the ferning test and 87 to 97% for the nitrazine test.

What is a positive nitrazine test?

Nitrazine Test This test involves putting a drop of fluid obtained from the vagina onto paper strips containing Nitrazine dye. The strips change color depending on the pH of the fluid. The strips will turn blue if the pH is greater than 6.0. A blue strip means it’s more likely the membranes have ruptured.

What color is a positive nitrazine test?

This test involves putting a drop of fluid obtained from the vagina onto paper strips containing nitrazine dye. The strips change color depending on the pH of the fluid. The strips will turn blue if the pH is greater than 6.0. A blue strip means it’s more likely the membranes have ruptured.

When do you perform a nitrazine test?

All samples remained ferning and nitrazine positive. Therefore optimal analysis of suspected amniotic fluid occurs when specimens are air-dried for 10 minutes. These tests may be reliably performed at gestations of 12 to 41 weeks.

What is Nitrazine paper used for?

Nitrazine (Phenaphthazine ) paper is used to measure the vaginal pH of expectant mothers. Nitrazine paper is impregnated with an indicator dye Phenaphthazine. The color changes as pH changes, giving a broad range of colors from yellow through blue.

What is preterm PROM?

Premature rupture of membranes (PROM) is the rupture of the fetal membranes before the onset of labor. In most cases, this occurs near term, but when membrane rupture occurs before 37 weeks’ gestation, it is known as preterm PROM.

Does amniotic fluid dry yellow?

Unlike actual yellow discharge, amniotic fluid is very thin and clear or pale yellow in color — like urine. And it’s usually odorless or slightly sweet-smelling.

How do you use Nitrazine paper for amniotic fluid?

Bring the strip of Nitrazine paper into contact with the specimen, either by dipping the paper into the pool of suspected amniotic fluid or by touching the paper to the exam speculum.

Does Nitrazine paper expire?

The pH Nitrazine paper and pH buffers are not used after the expiration date. The pH Nitrazine dispenser roll and pH buffer bottles are to be dated when initially opened. “Date Opened” Label. The yellow “Date Opened” Label should be affixed to the dispenser roll of pH paper/ pH buffer bottle when it is first opened.

What is ferning in pregnancy?

When high levels of estrogen are present, such as just before ovulation (or during pregnancy), the cervical mucus forms fern-like patterns due to crystallization of sodium chloride on mucus fibers. This pattern is known as arborization or ‘ferning’.

What is Arom in pregnancy?

Amniotomy (also referred to as artificial rupture of membranes [AROM]) is the procedure by which the amniotic sac is deliberately ruptured so as to cause the release of amniotic fluid.