HESI LPN
HESI Maternal Newborn
1. What is the typical sex chromosome pattern for females?
- A. XX
- B. XYY
- C. XY
- D. XXY
Correct answer: A
Rationale: The typical sex chromosome pattern for females is XX. Females have two X chromosomes, which is represented as XX. Choice B (XYY) is incorrect as it represents the sex chromosome pattern for males with an extra Y chromosome. Choice C (XY) is the sex chromosome pattern for males. Choice D (XXY) represents a genetic disorder known as Klinefelter syndrome, where males have an extra X chromosome.
2. A nurse is teaching about clomiphene citrate to a client who is experiencing infertility. Which of the following adverse effects should the nurse include?
- A. Tinnitus
- B. Urinary Frequency
- C. Breast Tenderness
- D. Chills
Correct answer: C
Rationale: The correct answer is C: 'Breast Tenderness.' Clomiphene citrate is known to cause breast tenderness as a common side effect due to its hormonal effects on the body. Tinnitus (choice A), which is a ringing in the ears, is not typically associated with clomiphene citrate. Urinary frequency (choice B) is not a common adverse effect of this medication. Chills (choice D) are also not commonly linked to clomiphene citrate use.
3. After meiosis, each new cell nucleus contains _____ chromosomes.
- A. 46
- B. 35
- C. 23
- D. 12
Correct answer: C
Rationale: After meiosis, each resulting cell contains 23 chromosomes. Meiosis is a process that involves two sequential divisions resulting in four daughter cells, each with half the number of chromosomes as the parent cell. In humans, the parent cell has 46 chromosomes (diploid), and after meiosis, the resulting cells (sperm or ova) have 23 chromosomes (haploid). Choice A (46 chromosomes) is incorrect because this is the number of chromosomes in a human diploid cell before meiosis. Choices B (35 chromosomes) and D (12 chromosomes) are incorrect as they do not represent the correct number of chromosomes after meiosis in human cells.
4. What is the most critical action in caring for the newborn immediately after birth?
- A. Keeping the airway clear.
- B. Fostering parent-newborn attachment.
- C. Drying the newborn and wrapping the infant in a blanket.
- D. Administering eye drops and vitamin K.
Correct answer: A
Rationale: The most critical action in caring for the newborn immediately after birth is keeping the airway clear. This is essential to ensure that the newborn can breathe effectively and prevent any respiratory distress. Fostering parent-newborn attachment, although important, is not the most critical action immediately after birth. Drying the newborn and wrapping the infant in a blanket is important for temperature regulation but is not as critical as maintaining a clear airway. Administering eye drops and vitamin K is typically done later and is not the most critical action immediately after birth.
5. Rico is a man who has enlarged breasts and suffers from mild mental retardation. He has a problem learning languages, and his body produces less of the male sex hormone testosterone than normal males. Rico is most likely suffering from:
- A. Klinefelter syndrome.
- B. Tay-Sachs disease.
- C. Turner syndrome.
- D. Down syndrome.
Correct answer: A
Rationale: Rico's symptoms align with Klinefelter syndrome, which is characterized by an extra X chromosome in males (XXY). Enlarged breasts (gynecomastia), mild mental retardation, learning difficulties, and reduced testosterone production are common features of Klinefelter syndrome. Choice B, Tay-Sachs disease, is a genetic disorder that affects the nervous system and is not associated with the symptoms described. Choice C, Turner syndrome, occurs in females with a missing or partially missing X chromosome and does not fit Rico's profile. Choice D, Down syndrome, is caused by an extra copy of chromosome 21 and typically does not present with the symptoms mentioned for Rico.
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