Nokea
Which condition must occur in order for identical (monozygotic) twins to develop?
- A. One sperm fertilizes two ova
- B. Two sperm fertilize two ova
- C. One sperm fertilizes one ovum
- D. Two sperm fertilize one ovum
Correct Answer: C
Rationale: The correct answer is C: One sperm fertilizes one ovum. Identical twins result from the fertilization of a single egg by a single sperm, leading to the formation of a zygote that later splits into two embryos. This process results in genetically identical individuals. Choices A, B, and D involve multiple fertilization events, which would lead to fraternal (dizygotic) twins with different genetic compositions. Therefore, the only condition that can lead to the development of identical twins is when one sperm fertilizes one ovum.
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A 16-year-old client reports to the school nurse because of nausea and vomiting. After exploring the signs and symptoms with the client, the nurse asks the girl whether she could be pregnant. The girl confirms that she is pregnant, but states that she does not know how it happened. Which nursing diagnosis is most important?
- A. Altered nutrition: less than body requirements related to nausea and vomiting
- B. Risk for altered family processes related to the client's age
- C. Ineffective individual coping related to denial of pregnancy
- D. Knowledge deficit related to the client's developmental stage and age
Correct Answer: D
Rationale: The correct answer is D: Knowledge deficit related to the client's developmental stage and age. This nursing diagnosis is most important because the client's lack of understanding about how pregnancy occurs indicates a significant gap in knowledge. It is crucial to provide education on sexual health and reproduction to prevent future unplanned pregnancies and promote informed decision-making.
Choice A is incorrect as addressing altered nutrition is important but not the priority in this situation. Choice B is incorrect as the client's age does not necessarily indicate a need for immediate intervention in family processes. Choice C is incorrect as the primary issue is the client's lack of knowledge, not denial of pregnancy.
In summary, choice D is the most important nursing diagnosis as it directly addresses the root cause of the client's situation and has the potential to positively impact her future health and well-being.
A new mother is crying in her room. She tells the nurse that her new baby boy has enlarged breasts and she thinks that there is something wrong. How should the nurse respond?
- A. Enlarged breasts are common for both boys and girls. It will go away.
- B. Let me look at the baby for you.
- C. Everything is going to be just fine. Your baby is healthy.
- D. You should ask your doctor about that.
Correct Answer: A
Rationale: The correct answer is A. Enlarged breasts in newborn boys and girls are a common physiological phenomenon called breast engorgement due to maternal hormones. The nurse should reassure the mother that it is normal and will resolve on its own. Choice B is unnecessary as the nurse already knows the cause. Choice C is vague and does not address the mother's concern directly. Choice D is not ideal as the nurse can provide basic information on the issue.
Which explanation is most appropriate when describing physiological jaundice to the parents of a newborn?
- A. The baby has a minor incompatibility of the blood.
- B. The baby is breaking down the extra red blood cells that were present at birth.
- C. The baby is getting too much breast milk, but this is not dangerous.
- D. The baby may have gotten exposed to hepatitis B during the delivery.
Correct Answer: B
Rationale: The correct answer is B: The baby is breaking down the extra red blood cells that were present at birth. Physiological jaundice in newborns occurs due to the breakdown of excess red blood cells, leading to an increase in bilirubin levels. This is a normal process as the baby's liver is still maturing.
Choice A is incorrect because minor blood incompatibility usually leads to a condition known as hemolytic disease of the newborn, not physiological jaundice. Choice C is incorrect as breast milk does not cause physiological jaundice. Choice D is incorrect because hepatitis B exposure does not directly cause physiological jaundice in newborns.
A nurse is reinforcing teaching with the parent of a child with a urinary tract infection.
- A. "I will bring my child to the bathroom before we leave for extended trips."'
- B. "I need to switch my child from cotton underwear to nylon underwear."'
- C. "I should teach my child to wipe from back to front after urinating."'
- D. "I will have my child soak in a bubble bath once or twice a week."'
Correct Answer: A
Rationale: Correct Answer: A. "I will bring my child to the bathroom before we leave for extended trips."
Rationale: Bringing the child to the bathroom before extended trips helps prevent urinary stasis and decreases the risk of urinary tract infections by promoting regular voiding. This practice ensures that the bladder is emptied regularly, reducing the chances of bacterial growth. It is important to encourage frequent urination to flush out bacteria and prevent infection.
Summary of other choices:
B: Switching from cotton to nylon underwear can increase moisture retention and promote bacterial growth, leading to an increased risk of urinary tract infections.
C: Teaching a child to wipe from back to front can introduce bacteria from the anal area to the urethra, increasing the risk of urinary tract infections.
D: Soaking in a bubble bath can irritate the urethra and disrupt the natural balance of bacteria in the genital area, potentially leading to urinary tract infections.
A nurse on a pediatric unit is assigned to care for a child with Reye syndrome. Which of the following is the most serious clinical manifestation for which the nurse should monitor?
- A. Anaphylaxis
- B. Cerebral edema
- C. Impaired coagulation
- D. Hypervolemia
Correct Answer: B
Rationale: The correct answer is B: Cerebral edema. In Reye syndrome, cerebral edema is the most serious manifestation due to increased intracranial pressure, potentially leading to brain damage or death. Anaphylaxis (A) is not typically associated with Reye syndrome. Impaired coagulation (C) can occur but is not as immediately life-threatening as cerebral edema. Hypervolemia (D) is a possible complication but not as critical as cerebral edema in Reye syndrome.