The proteins and saline content of amniotic fluid crystallize on a slide when dry yielding the appearance of ferns. A positive test shows the presence of fern-like patterns characteristic of amniotic fluid crystals.
What does ferning mean 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 ferning Obgyn?
The American College of Obstetricians and Gynecologists says that ferning is a confirmatory test for ruptured membranes, to be used along with pooling in the vaginal vault, and that premature membrane rupture is confirmed by fluid passing from the cervical canal.
What is Pprom?
Premature rupture of membranes (PROM) is a rupture (breaking open) of the membranes (amniotic sac) before labor begins. If PROM occurs before 37 weeks of pregnancy, it is called preterm premature rupture of membranes (PPROM). PROM occurs in about 8 to 10 percent of all pregnancies.
Does corpus luteum secrete estrogen?
The corpus luteum secretes estrogens and progesterone. The latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. If the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.
What is the relationship between estrogen and progesterone?
Progesterone is used along with estrogen. Taking estrogen without progesterone increases your risk for cancer of the endometrium (the lining of the uterus). During your reproductive years, cells from your endometrium are shed during menstruation.
Can a fern test be wrong?
Nitrazine test may also lead to false positive or negative results due to probable contamination by alkaline urine, semen, blood, meconium, vaginitis, cervicitis and using antibiotics. Fern test has also 13-30% false negative and 5-30% false positive results (13, 14).
