Nokea
Between 2-6 months of life, all are true about infant sleep EXCEPT
- A. total sleep hours are about 14-16 hr/24 hr
- B. sleeps about 9-10 hr concentrated at night
- C. sleeps 2 naps/day
- D. the sleep cycle time is similar to that of adults
Correct Answer: D
Rationale: Infant sleep cycles are shorter and differ from adult patterns.
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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.
Calcium carbonate is given with meals to a child with chronic renal disease. What is the purpose of administering calcium carbonate?
- A. Prevent vomiting
- B. Bind phosphorus
- C. Stimulate appetite
- D. Increase absorption of fat-soluble vitamins
Correct Answer: B
Rationale: In chronic renal disease, the kidneys are not functioning properly, leading to an accumulation of phosphorus in the body. High levels of phosphorus can be harmful and contribute to bone and mineral disorders. Calcium carbonate is often given with meals to bind phosphorus in the gut and prevent its absorption. By binding with phosphorus, calcium carbonate helps lower the levels of phosphorus in the blood, thereby managing complications associated with chronic renal disease, such as renal osteodystrophy. It is an essential part of the treatment plan for patients with chronic kidney disease to help maintain appropriate phosphorus balance in the body and prevent further complications.
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.
Which defect results in increased pulmonary blood flow?
- A. Pulmonic stenosis
- B. Tricuspid atresia
- C. Atrial septal defect
- D. Transposition of the great arteries
Correct Answer: C
Rationale: Atrial septal defect (ASD) is a congenital heart defect where there is an abnormal opening in the atrial septum, leading to a left-to-right shunt of blood. This shunt causes increased pulmonary blood flow, as oxygenated blood from the left atrium is shunted back into the right atrium and then into the pulmonary circulation. Over time, this increased pulmonary blood flow can lead to pulmonary hypertension and potentially Eisenmenger syndrome if left untreated. Pulmonic stenosis, tricuspid atresia, and transposition of the great arteries all typically result in decreased pulmonary blood flow rather than increased pulmonary blood flow.
Miss OB's malignant tumor in her left breast was discovered to be spreading all over the surrounding and adjacent tissue and not entering the blood stream, it would be:
- A. Malignant
- B. Non-malignant
- C. Benign
- D. B and C
Correct Answer: C
Rationale: A malignant tumor is characterized by its ability to spread to surrounding tissues and potentially enter the bloodstream to form secondary tumors in distant organs (metastasis). In the scenario provided, the tumor in Miss OB's left breast is described as spreading all over the surrounding and adjacent tissue but specifically noted not to be entering the bloodstream. This behavior is more indicative of a benign tumor that is growing locally but is not capable of metastasis. Therefore, the tumor is best classified as benign in this case.