A nurse is caring for a client who is at 16 weeks of gestation and reports a sudden gush of vaginal fluid.
Which of the following findings indicates premature rupture of membranes?
Vaginal fluid has a pH of 5.3.
Nitrazine paper turns yellow.
Vaginal fluid is negative for ferning.
Nitrazine paper turns dark blue.
The Correct Answer is D
Choice A rationale
Normal vaginal fluid is acidic due to the presence of Lactobacillus species, which convert glycogen to lactic acid, maintaining a pH typically between 4.5 and 6.0. Amniotic fluid is alkaline, with a pH usually ranging from 7.0 to 7.5. Therefore, a pH of 5.3 indicates acidic vaginal secretions, suggesting the fluid is likely not amniotic fluid and ruling out premature rupture of membranes (PROM).
Choice B rationale
Nitrazine paper is used to test the pH of vaginal fluid. It is impregnated with a pH-sensitive dye. When the paper comes into contact with acidic fluid (normal vaginal secretions, pH < 6.0), it will remain yellow or turn a yellow-green color. This result indicates an acidic environment, which is inconsistent with the alkaline nature of amniotic fluid (pH≥ 6.5), making PROM unlikely.
Choice C rationale
Ferning refers to the characteristic microscopic crystallization pattern that dried amniotic fluid forms due to its salt and protein content. A negative ferning test means the characteristic pattern is absent. This negative result suggests the fluid is not amniotic fluid, thereby providing evidence against the diagnosis of premature rupture of membranes (PROM).
Choice D rationale
Nitrazine paper turning a dark blue color (or royal blue, deep blue-green, or deep blue) indicates an alkaline pH of 6.5 or greater. Amniotic fluid is alkaline, typically with a pH of 7.0 to 7.5. Therefore, this color change strongly suggests the presence of amniotic fluid, which is the defining diagnostic finding for premature rupture of membranes (PROM).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
While bonding time is crucial for establishing parent-newborn attachment, it is not the immediate priority during the third stage of labor. The third stage is the period from the baby's birth until the placenta is delivered. The newborn's physiological stability, particularly temperature regulation and respiratory transition, takes precedence over private bonding immediately after birth.
Choice B rationale
Applying identification bands is a critical safety measure to prevent infant abduction or mix-up. However, it is not the absolute first action the nurse should take. Thermoregulation and initial stabilization, such as drying, are the immediate priorities to prevent cold stress and ensure the newborn's physiological adaptation before applying bands or allowing prolonged bonding.
Choice C rationale
Drying the newborn with clean towels is the first and most critical action to prevent heat loss through evaporation. Immediate drying and removing the wet linens are essential for thermoregulation and preventing cold stress, which can lead to increased oxygen consumption and metabolic acidosis. This action also provides tactile stimulation, which can help initiate or sustain respirations.
Choice D rationale
Checking the newborn's axillary temperature is an essential step for monitoring thermoregulation. However, it is an assessment action that follows the intervention of drying the baby. Immediate drying is the priority to prevent heat loss and stabilize the baby's temperature; the temperature check is then used to evaluate the effectiveness of the warming measures.
Correct Answer is C
Explanation
Choice A rationale
Applying vitamin E oil to the nipples is not generally recommended; it offers little benefit and could potentially introduce unnecessary substances to the infant during feeding. Lanolin cream or purified lanolin is often recommended for sore nipples because it provides moisture, promotes healing by creating a barrier, and is safe for the baby to ingest. Proper latch technique is the primary intervention for preventing nipple soreness.
Choice B rationale
Limiting feeding time to 5 to 10 minutes per breast is incorrect and can lead to inadequate milk intake and insufficient stimulation for milk production. The infant should be allowed to feed for as long as they actively suckle and swallow, usually 15 to 20 minutes or until the breast feels softer, ensuring they receive the higher-calorie hindmilk.
Choice C rationale
Positioning the baby on a pillow at the level of the breast promotes a more comfortable and effective latch. Proper positioning allows the infant's mouth to be level with the nipple, ensuring the baby can take in a large portion of the areola and preventing strain on the mother's back, which facilitates a deeper and more comfortable latch for effective milk transfer.
Choice D rationale
Ensuring just the nipple is in the baby's mouth is an incorrect technique and is a common cause of nipple soreness and inadequate milk transfer. The baby needs to take in a large portion of the areola to effectively compress the milk sinuses underneath, achieving a deep latch that stimulates milk release and minimizes nipple trauma.
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