Nokea
Which of the following is the most numerous type of white blood cell (WBC)?
- A. Neutrophil
- B. Basophil
- C. Eosinophil
- D. Lymphocyte
Correct Answer: A
Rationale: Neutrophils are the most numerous type of white blood cell (WBC) in the body, comprising about 60-70% of the total WBC count. They are a critical component of the immune system, playing a key role in fighting bacterial infections through phagocytosis (engulfing and destroying pathogens). Neutrophils are known for their rapid response to infections and are often the first responders to sites of inflammation. Their abundance and rapid mobilization make them essential in the body's defense against harmful pathogens.
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Regarding the gross motor skills, a 2-year-old child can
- A. heel-toe walk
- B. balance on each foot 6 sec
- C. walk up and down stairs
- D. balance well on each foot
Correct Answer: C
Rationale: A 2-year-old typically can walk up and down stairs with support.
What is the earliest age at which a satisfactory radial pulse can be taken in children?
- A. 1 year
- B. 2 years
- C. 3 years
- D. 6 years
Correct Answer: A
Rationale: A satisfactory radial pulse can be taken in children as young as 1 year old. The radial pulse is commonly checked in the wrist and is a valuable indicator of cardiac function. Children as young as 1 year old can have a palpable radial pulse, allowing healthcare providers to assess their heart rate and rhythm. It is important to be gentle when palpating a pulse in young children to avoid causing discomfort or distress.
Which of the ff nursing interventions should a nurse perform to relieve tachycardia that may develop in a client with myocarditis from hypoxemia?
- A. Maintain the client on bed rest c.Elevate the clients head
- B. Administer a prescribed anti pyretic
- C. Administer supplemental oxygen
Correct Answer: C
Rationale: Administering supplemental oxygen is the most appropriate nursing intervention to relieve tachycardia that may develop in a client with myocarditis from hypoxemia. Myocarditis can lead to decreased oxygen delivery to the tissues, which may result in tachycardia as the body tries to compensate for the lack of oxygen. Providing supplemental oxygen will help increase oxygen levels in the blood, improving tissue perfusion and thus reducing the tachycardia. This intervention aims to address the underlying cause of the tachycardia in this situation.
Children with high-risk neuroblastoma have poor survival. Current treatment consists of all the following EXCEPT
- A. surgery
- B. intensive chemotherapy
- C. radiation
- D. allogenic bone marrow transplantation
Correct Answer: E
Rationale: Differentiating agents like 13-cis-retinoic acid are used instead of allogenic bone marrow transplantation in high-risk neuroblastoma.
During a routine examination of a 10-mo-old male infant, you find a white pupillary reflex of the right eye; the eye movements are normal. You suspect retinoblastoma. Of the following, the BEST confirmatory diagnostic evaluation of this infant is
- A. indirect ophthalmoscopy with slit-lamp examination
- B. examination under general anesthesia by an experienced ophthalmologist
- C. orbital ultrasonography
- D. brain MRI
Correct Answer: B
Rationale: Examination under anesthesia by an experienced ophthalmologist is the gold standard for diagnosing retinoblastoma.