Nokea
Which of the following approaches is the most accurate way to measure the heart rate of a 10-month-old infant?
- A. "Apical"'
- B. "Radial"'
- C. "Ulna"'
- D. "Brachial"'
Correct Answer: A
Rationale: The correct answer is A: "Apical." This method involves placing the stethoscope over the apex of the heart to directly listen to the heart sounds. In infants, especially 10-month-olds, the apical pulse is more accurate as it allows for a direct assessment of the heart rate without interference from other factors like peripheral pulses. The apical pulse is easier to locate in infants due to their smaller chest size and thinner chest walls. Choices B, C, and D (Radial, Ulna, and Brachial) are incorrect for measuring heart rate in infants as they involve peripheral pulse sites which may not provide an accurate representation of the heart rate due to various factors like weak pulses or difficulty in palpating them accurately in infants.
You may also like to solve these questions
A 17-year-old client delivered her first baby 8 hours ago. Which of the following is an indication that appropriate bonding is occurring? The client:
- A. makes eye contact with the baby.
- B. wonders why the baby cries so much.
- C. asks the nurse to help change the baby's diaper.
- D. asks the nurse if the baby is cute.
Correct Answer: A
Rationale: The correct answer is A: makes eye contact with the baby. This indicates appropriate bonding as eye contact fosters emotional connection and attachment between mother and baby. It shows the mother is engaging with her child, seeking to establish a bond. Choice B suggests lack of understanding of infant communication, choice C indicates practical caregiving rather than emotional bonding, and choice D focuses on the baby's appearance rather than emotional connection.
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.
A new mother receives instructions about care of her newborn son's circumcision. Which statement made by the mother indicates that further teaching is needed?
- A. I will call the doctor if my baby's penis starts to bleed.
- B. I should wash off any yellowish mucous on my baby's penis.
- C. I will put vaseline on his penis every time I change his diaper.
- D. I should give my baby a sponge bath for the first week.
Correct Answer: B
Rationale: The correct answer is B. Washing off yellowish mucous is not recommended as it may be a normal part of the healing process after circumcision. The yellowish mucous is likely to be a scab or healing tissue, and washing it off could interfere with the healing process or cause infection. It is essential to let it fall off naturally. Choices A, C, and D are correct because calling the doctor for bleeding, applying vaseline for protection, and giving a sponge bath for hygiene are appropriate post-circumcision care.
A client at 33 weeks gestation is admitted for suspected abruptio placenta. Which factor in the client's history supports this diagnosis? The client states that she:
- A. drinks two glasses of wine before dinner every night.
- B. has intermittent contractions that are relieved by walking.
- C. had intercourse with her partner last night.
- D. used crack an hour before the symptoms began.
Correct Answer: D
Rationale: The correct answer is D: used crack an hour before the symptoms began. Abruptio placenta is a condition where the placenta prematurely separates from the uterine wall. Substance abuse, such as crack cocaine, can lead to vasoconstriction and increased risk of abruptio placenta due to compromised blood flow to the placenta. This can result in fetal distress and maternal bleeding. The other choices (A, B, C) do not directly correlate with abruptio placenta. Intermittent contractions relieved by walking are more suggestive of Braxton Hicks contractions, intercourse is not a known risk factor for abruptio placenta, and drinking wine does not typically cause this condition.
A nurse is caring for a child who has hemophilia. The nurse should expect abnormal results in which of the following diagnostic tests?
- A. Fibrinogen
- B. Hemoglobin level
- C. Prothrombin time (PT)
- D. Partial thromboplastin time (PTT)
Correct Answer: D
Rationale: The correct answer is D: Partial thromboplastin time (PTT). In hemophilia, there is a deficiency in specific clotting factors, leading to prolonged PTT due to impaired intrinsic pathway function. A: Fibrinogen level is normal in hemophilia as it is not affected by clotting factor deficiencies. B: Hemoglobin level is unrelated to hemophilia and reflects oxygen-carrying capacity of blood. C: Prothrombin time (PT) evaluates the extrinsic pathway, which is typically normal in hemophilia. Therefore, the abnormal result is in PTT, making it the correct choice.