A woman at 38 weeks gestation tells the nurse, "I can finally breathe better, but now I feel pressure in my pelvis and I'm running to the bathroom constantly!" The nurse explains this is called lightening.
Which physiologic event is occurring?

The fetus is descending into a lower position in the pelvis.

The cervix is beginning to soften and dilate.

The vaginal mucosa is becoming more congested.

The woman's body is eliminating excess fluid from pregnancy.

Answer and Explanation

The Correct Answer is A

Choice A rationale

Lightening occurs when the fetal presenting part, usually the head, descends into the true pelvis toward the end of the third trimester. This movement increases the space in the upper abdomen, relieving pressure on the diaphragm and allowing for easier lung expansion and breathing. However, this descent simultaneously increases mechanical pressure on the urinary bladder and pelvic floor, leading to the reported symptoms of increased urinary frequency and pelvic heaviness.

Choice B rationale

Cervical effacement and dilation are processes involving the thinning and opening of the cervix in preparation for labor, often triggered by fetal head pressure and hormonal changes. While these changes occur in late pregnancy, they do not directly explain the sudden improvement in maternal respiratory capacity. The relief in breathing is specifically linked to the physical repositioning of the fetus away from the thoracic cavity, which is the hallmark of the lightening phenomenon.

Choice C rationale

Increased congestion of the vaginal mucosa, known as Chadwick's sign, is a result of increased vascularity and estrogen levels during pregnancy. While this can cause increased leukorrhea or sensitivity, it does not account for the shift in the woman's ability to breathe or the specific sensation of the fetus dropping. The pelvic pressure mentioned is a mechanical result of fetal weight shifting lower, not a result of localized tissue hyperemia or mucosal congestion.

Choice D rationale

The elimination of excess fluid, or diuresis, typically occurs during the postpartum period rather than at 38 weeks gestation. During late pregnancy, the body actually tends to retain fluid, contributing to physiological edema. The increased bathroom trips described by the patient are not due to systemic fluid loss but are the result of the physical weight of the fetal head pressing directly against the bladder wall, which reduces the bladder's functional storage capacity.

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Correct Answer is ["B","D"]

Explanation

Choice A rationale

Infertility medications like clomiphene citrate or letrozole are primarily indicated for female partners who experience anovulation or irregular menstrual cycles. In this specific scenario, the female partner is already documented to have regular ovulation and patent fallopian tubes. Therefore, stimulating the ovaries further does not address the primary identified issue, which is the male partner's low sperm motility, making this an inappropriate and unnecessary intervention for this specific couple.

Choice B rationale

Intrauterine insemination is a highly appropriate first-line treatment for male-factor infertility involving low motility. This procedure bypasses the cervical mucus and places a concentrated, washed sample of motile sperm directly into the uterine cavity near the time of ovulation. By reducing the distance the sperm must travel to reach the egg in the fallopian tube, the chances of fertilization are significantly improved despite the decreased swimming ability of the sperm.

Choice C rationale

An intrauterine device is a form of long-acting reversible contraception designed to prevent pregnancy by either releasing progestin or using copper to create a spermicidal environment. Placing an IUD would be entirely counterproductive for a couple that has been actively trying to conceive for eighteen months. The goal of infertility treatment is to facilitate conception, whereas an IUD is specifically indicated for those seeking to avoid pregnancy for an extended period.

Choice D rationale

In-vitro fertilization is a complex assisted reproductive technology where eggs are harvested and fertilized by sperm in a laboratory setting. If less invasive methods like intrauterine insemination fail to result in pregnancy, IVF becomes the next logical step. It is particularly effective for low sperm motility because techniques like intracytoplasmic sperm injection can be used to manually insert a single healthy sperm directly into the mature egg, ensuring fertilization occurs.

Choice E rationale

Gestational surrogacy involves another woman carrying a pregnancy for the couple and is typically reserved for cases where the female partner has no uterus, a severely compromised uterine environment, or life-threatening contraindications to pregnancy. Since the female partner in this case has regular ovulation and patent tubes, there is no clinical evidence suggesting she cannot carry a pregnancy. Surrogacy is an extreme and unnecessary measure for a couple with treatable male-factor motility issues.

A. "Sometimes I notice that I have bad breath after I drink a cup of milk.”. B. "If I drink more than a cup of milk, I usually have abdominal cramps and bloating.”. C. "Drinking milk usually makes me break out in hives.”. D. "I always have heartburn after I drink milk.”.

Correct Answer is B

Explanation

Choice A rationale

Halitosis or bad breath is not a diagnostic indicator of lactose intolerance. While oral bacteria can interact with various food particles, the primary scientific mechanism of lactose intolerance involves the inability of the small intestine to produce sufficient lactase. This enzyme is required to break down lactose into glucose and galactose. Without it, undigested sugars pass into the colon, leading to gastrointestinal distress rather than isolated changes in breath odor or oral hygiene.

Choice B rationale

Lactose intolerance occurs when the body lacks lactase, the enzyme needed to digest milk sugar. When a person consumes more milk than their enzyme levels can handle, undigested lactose enters the large intestine. Bacteria ferment this sugar, creating hydrogen gas and lactic acid. This process results in the classic clinical presentation of abdominal cramping, bloating, and flatulence. Symptoms typically appear within 30 to 60 minutes after ingestion of dairy products containing lactose.

Choice C rationale

Hives or urticaria are manifestations of a Type I hypersensitivity reaction, which is an immune system response to milk proteins like casein or whey. This represents a true milk allergy rather than an enzymatic deficiency. In lactose intolerance, the immune system is not involved, and the reaction is strictly metabolic and gastrointestinal. Normal physiological responses to intolerance do not include the release of histamine or the formation of itchy wheals on the skin surface.

Choice D rationale

Heartburn or pyrosis is caused by the reflux of gastric acid into the esophagus, often due to a relaxed lower esophageal sphincter. While some dairy products are high in fat and can slow gastric emptying, heartburn is not the hallmark of lactose intolerance. The fermentation of lactose happens in the lower gastrointestinal tract, specifically the colon, whereas heartburn is an upper gastrointestinal issue. Therefore, this symptom points toward gastroesophageal reflux disease rather than lactase deficiency.

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A woman at 38 weeks gestation tells the nurse, "I can finally breathe better, but now I feel pressure in my pelvis and I'm running to the bathroom constantly!" The nurse explains this is called lightening. Which physiologic event is occurring?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A couple has been trying to conceive for 18 months. Testing reveals the male partner has low sperm motility, and the female partner has patent fallopian tubes with regular ovulation. Which treatment options would be appropriate for this couple? Select all that apply.

Correct Answer is ["B","D"]

Explanation

Which statement made by the lactating woman would lead the nurse to believe that the woman might have lactose intolerance?

Correct Answer is B

Explanation

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A woman at 38 weeks gestation tells the nurse, "I can finally breathe better, but now I feel pressure in my pelvis and I'm running to the bathroom constantly!" The nurse explains this is called lightening.
Which physiologic event is occurring?