A woman calls the nurse triage line at the OB clinic.
She explains that she usually has a 28-day menstrual cycle but that she started bleeding today, a week early, on day 21. The nurse asks the patient if she has had recent intercourse, to which the patient replies, "Yes, seven days ago.”. The nurse asks this because she knows:
The patient likely has a pelvic infection.
The patient may be experiencing implantation bleeding, which can occur 6-10 days following ovulation and fertilization and occurs as a result of the blastocyst burrowing into the endometrium.
The patient may be experiencing secondary amenorrhea, or bleeding between periods.
The patient may be experiencing primary amenorrhea, or bleeding between periods.
The Correct Answer is B
Choice A rationale
While a pelvic infection can cause abnormal bleeding, it is not the most immediate or scientifically direct explanation for bleeding occurring precisely seven days after intercourse, especially in the context of a 28-day cycle with early onset bleeding. Pelvic infections typically present with other symptoms such as pain, fever, or unusual discharge, which are not mentioned.
Choice B rationale
This is the most scientifically plausible explanation. Implantation bleeding occurs when the blastocyst, typically 6 to 12 days (averaging 6-10 days) after fertilization, burrows into the richly vascularized endometrial lining of the uterus. This process can disrupt small blood vessels, leading to light spotting or bleeding, which aligns with the timing of 7 days post-intercourse and a slightly early menstrual period.
Choice C rationale
Secondary amenorrhea refers to the cessation of menstruation in a woman who has previously menstruated regularly. Bleeding between periods is more accurately termed intermenstrual bleeding or metrorrhagia, not amenorrhea. Therefore, classifying this early bleeding as secondary amenorrhea is an incorrect medical definition and does not accurately describe the patient's symptom.
Choice D rationale
Primary amenorrhea refers to the absence of menstruation by age 15 in girls who have developed secondary sexual characteristics, or by age 13 in girls without. This patient clearly has a history of regular menstrual cycles, making primary amenorrhea an inappropriate diagnosis. Bleeding between periods is not categorized as primary amenorrhea. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Dark, cloudy urine is generally indicative of dehydration or a urinary tract infection, not an impending ovulation. Urine characteristics are primarily related to hydration status and renal function, not the hormonal fluctuations associated with the ovulatory cycle. Therefore, it is not a reliable indicator of fertility.
Choice B rationale
Breast tenderness is often a symptom associated with the luteal phase of the menstrual cycle, occurring after ovulation, due to rising progesterone levels. It is caused by hormonal influences on mammary gland tissue, but it does not reliably predict the immediate approach of ovulation.
Choice C rationale
Cervical mucus that becomes thin, clear, stretchy, and abundant, often described as "egg-white" consistency, is a reliable physiological indicator of impending ovulation. This change is induced by rising estrogen levels, which facilitate sperm transport through the cervix into the uterus, increasing fertility around the time of ovulation.
Choice D rationale
A consistently low basal body temperature (BBT) typically characterizes the follicular phase before ovulation. A sustained slight increase in BBT (0.5 to 1.0°F or 0.2 to 0.5°C) occurs after ovulation, driven by the thermogenic effect of progesterone. Therefore, a consistently low temperature indicates pre-ovulatory status, not imminent ovulation.
Correct Answer is C
Explanation
Choice A rationale
Human placental lactogen (hPL) is a hormone produced by the placenta during pregnancy. Its primary functions include modulating maternal metabolism to ensure nutrient supply to the fetus and promoting mammary gland development. It is not involved in stimulating ovarian follicle development for the purpose of inducing ovulation in fertility treatments.
Choice B rationale
Estrogen cream, typically estradiol, is a form of hormone replacement therapy used to alleviate symptoms of menopause, such as vaginal atrophy, by topical application. While estrogen plays a crucial role in follicular development, exogenous estrogen cream is not the primary medication used to stimulate ovarian follicle maturation in fertility protocols.
Choice C rationale
Clomiphene, a selective estrogen receptor modulator, works by blocking estrogen receptors in the hypothalamus and pituitary gland. This blockade prevents negative feedback, leading to an increase in gonadotropin-releasing hormone (GnRH) and subsequent surges in follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which stimulate ovarian follicular growth and ovulation.
Choice D rationale
Progestin, or progesterone, is a hormone primarily involved in preparing the uterine lining for implantation and maintaining pregnancy. In fertility treatments, it is often administered after ovulation or embryo transfer to support the luteal phase and enhance endometrial receptivity, not to stimulate the initial development of ovarian follicles.
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