![]() Nitrazine test (5% FP rate, 1% FN rate) - pH swab turns blue, indicating alkalotic amniotic fluid (pH 6.5 - 7.Some lubricants can affect FFN and amniotic fluid pH strip.Swabs for nitrazine, fetal fibronectin (FFN), GBS culture should also precede digital exam.Start with ultrasound to assess position of cervix and rule out placenta previa.Do NOT perform digital exam in patients who present with vaginal bleeding when >20 weeks pregnant due to potential for placenta previa Reference Range pH: Amniotic fluid pH 7.0 to 7.5 Normal vaginal secretions will have a pH of 4.5-5.5 Negative: Non-Ruptured Membranes (pH 4.5-6.0) Positive: Ruptured Membranes (pH 6.5-7.5) Clinical Significance Nitrazine (Phenaphthazine) paper is used to measure the vaginal pH of expectant mothers to determine if the amniotic membrane has ruptured. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |