Nokea
An adult has a Hickman type central venous catheter and needs to have blood drawn from it. Which of the following should the nurse do first?
- A. Use sterile technique to assemble supplies needed
- B. Aspirate and discard the first 10 ml of the blood
- C. First flush the catheter with heparinized solution, then withdraw the blood
- D. Remove the cap of the catheter and replace it with a new one
Correct Answer: C
Rationale: Before drawing blood from a central venous catheter like a Hickman type, it is essential to ensure that the catheter is patent and free of any clots. Flushing the catheter with a heparinized solution (to prevent clot formation) before withdrawing blood helps clear the catheter and ensures accurate blood sample collection. Removing clots or obstructions from the catheter is crucial to prevent complications and maintain the catheter's function. Therefore, it is important to first flush the catheter with a heparinized solution before drawing blood from it.
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Which of the following statements about fluid replacement is accurate for a client with hyperosmolar hyperglycemic nonketotic syndrome (HHNS)?
- A. Administer 2 to 3L of IV fluid rapidly
- B. Administer 6L of IV fluid over the first 24 hours
- C. Administer a dextrose solution containing normal saline solution
- D. Administer IV fluid slowly to prevent circulatory overload and collapse
Correct Answer: B
Rationale: For a client with hyperosmolar hyperglycemic nonketotic syndrome (HHNS), the correct statement is to administer 6L of IV fluid over the first 24 hours (option B). The management of HHNS focuses on correcting dehydration and hyperglycemia. The initial fluid resuscitation in HHNS aims to address the profound dehydration that occurs due to osmotic diuresis from hyperglycemia. The recommended rate is to administer 1 to 1.5 L/hour of IV fluid until the patient is hemodynamically stable and urine output is adequate. Administering fluid rapidly helps to address the hypovolemia and prevent complications associated with shock. Administering fluid too slowly may delay the correction of dehydration and lead to further complications.
The nurse has a 2-year-old boy sit in "tailor" position during palpation for the testes. What is the rationale for this position?
- A. It prevents cremasteric reflex.
- B. Undescended testes can be palpated.
- C. This tests the child for an inguinal hernia.
- D. The child does not yet have a need for privacy.
Correct Answer: A
Rationale: The "tailor" position, also known as the frog-leg position, is used during palpation for the testes in young boys because it helps prevent the cremasteric reflex. The cremasteric reflex is a normal reflex in which the testes are pulled upwards towards the inguinal canal when the inner thigh is stroked. By having the child sit in the tailor position, with the knees pulled up and legs rotated outwards, the reflex is less likely to be elicited, allowing for a more accurate examination of the testes.
Which painful, tender, pea-sized nodules may appear on the pads of the fingers or toes in bacterial endocarditis?
- A. Osler nodes
- B. Janeway lesions
- C. Subcutaneous nodules
- D. Aschoff nodes
Correct Answer: A
Rationale: Osler nodes are painful, tender, pea-sized nodules that can appear on the pads of the fingers or toes and are associated with bacterial endocarditis. These nodules result from immune-complex deposition in the small blood vessels of the skin. They are not to be confused with Janeway lesions, which are painless, non-tender macules found on the palms and soles in infective endocarditis. Subcutaneous nodules are seen in conditions like rheumatic fever, while Aschoff nodes are characteristic of rheumatic fever involving the heart.
Prenatal exposure to cigarette smoke is associated with
- A. shorter neonatal length
- B. lower birthweight
- C. changes in neonatal behavior
- D. neonatal diabetes
Correct Answer: D
Rationale: Neonatal diabetes is not commonly associated with prenatal cigarette smoke exposure.
You are evaluating a 6-year-old child with ALL on interim maintenance phase who has frequent mucositis and myelosuppression that needs frequent discontinuation of his treatment. Of the following, the MOST valuable test for this child is
- A. complete blood count
- B. pharmacogenetic testing of the thiopurine S-methyltransferase (TPMT) gene
- C. renal function test
- D. bone marrow study
Correct Answer: B
Rationale: TPMT gene testing helps determine the child's ability to metabolize thiopurine drugs, which may explain the adverse effects.