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NCLEX National Council Licensure Examination(NCLEX-RN) Sample Questions (Q751-Q756):

NEW QUESTION # 751
When a client questions the nurse as to the purpose of exercise electrocardiography (ECG) in the diagnosis of cardiovascular disorders, the nurse's response should be based on the fact that:

  • A. Ischemia can be diagnosed because exercise increases O2 consumption and demand
  • B. The client can be monitored while cardiac conditioning and heart toning are done
  • C. The procedure simulates usual daily activity and myocardial performance
  • D. The test provides a baseline for further tests

Answer: A

Explanation:
(A)
The purpose of the study is not to provide a baseline for further tests. (B) The test causes an increase in O2 demand beyond that required to perform usual daily activities.
(C)
Monitoring does occur, but the test is not for the purpose of cardiac toning and conditioning. (D) Exercise ECG, or stress testing, is designed to elevate the peripheral and myocardial needs for O2 to evaluate the ability of the myocardium and coronary arteries to meet the additional demands.


NEW QUESTION # 752
An 11-month-old infant is admitted with a possible diagnosis of pyloric stenosis. Which of the following best describes the characteristic clinical manifestations of pyloric stenosis?

  • A. Palpable olive-shaped mass in the epigastrium just right of the umbilical cord
  • B. Poor appetite and sucking reflex
  • C. Pain, especially when eating
  • D. Increased frequency and quantity of stools

Answer: A

Explanation:
(A) There is no evidence of pain in infants with pyloric stenosis whether eating or not. (B) There are both good appetite and feeding habits in these children. (C) Because of regurgitation, there is usually decreased frequency and quantity of stools and also signs of dehydration and weight loss. (D) Along with upper abdominal distention, there is a characteristic palpable olive-shaped mass located to the right of the umbilicus.


NEW QUESTION # 753
A primigravida with a blood type A negative is at 28 weeks' gestation. Today her physician has ordered a RhoGAM injection. Which statement by the client demonstrates that more teaching is needed related to this therapy?

  • A. "This shot should help to protect me in future pregnancies if this baby is Rh positive, like my husband."
  • B. "I understand that if my baby is Rh positive I'll be getting another one of these injections."
  • C. "This shot will prevent me from becoming sensitized to Rh-positive blood."
  • D. "I'm getting this shot so that my baby won't develop antibodies against my blood, right?"

Answer: D

Explanation:
Section: Questions Set E
Explanation:
(A) RhoGAM is given to Rh-negative mothers to prevent the maternal Rh immune response to fetal Rh-positive antigens. (B) If the infant is Rh positive, the mother will receive another dose postdelivery to prevent maternal sensitization. (C) Prevention of maternal sensitization will protect future pregnancies because the mother's blood will be free of antibodies against her fetus. (D) RhoGAM prevents maternal sensitization to Rh-positive blood.


NEW QUESTION # 754
What specific hormone must be present in serum or urine laboratory tests used to diagnose pregnancy?

  • A. Estrogen
  • B. Sphingomyelin
  • C. -fetoprotein
  • D. Human chorionic gonadotropin

Answer: D

Explanation:
Explanation
(A) Human chorionic gonadotropin is the biochemical basis for pregnancy tests. It is produced by the placenta to help maintain the corpus luteum. Its levels climb rapidly following conception, peaking at about 8 weeks and then gradually decreasing to low levels after 16 weeks. (B) Estrogen does steadily rise throughout pregnancy, increasing to 30 times that of prepregnancy levels. Although estrogen levels do change during pregnancy, it is not used as the main hormone of evaluation in pregnancy tests. (C) -Fetoprotein is the major protein in the serum of theembryo. It is initially produced by the yolk sac. (D) Lecithin and sphingomyelin are two phospholipids of which fetal lung surfactant is composed. Levels are evaluated to determine fetal lung maturity.


NEW QUESTION # 755
Morphine sulfate 4 mg IV push q2h prn for chest pain was ordered for a client in the emergency room with severe chest pain. The nurse administering the morphine sulfate knows which of the following therapeutic actions is related to the morphine sulfate?

  • A. Increased rate and depth of respirations
  • B. Increased level of consciousness
  • C. Increased peripheral vasodilation
  • D. Increased perception of pain

Answer: C

Explanation:
(A) Morphine sulfate, a narcotic analgesic, causes sedation and a decrease in level of consciousness. (B) The side effects of morphine sulfate include respiratory depression. (C) Morphine sulfate causes peripheral vasodilation, which decreases afterload, producing a decrease in the myocardial workload. (D) Morphine sulfate alters the perception of pain through an unclear mechanism. This alteration promotes pain relief.


NEW QUESTION # 756
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