Nokea
Undescended testis is a risk factor for the development of which of the following tumors?
- A. rhabdomyosarcoma
- B. leukemia
- C. yolk sac tumor
- D. lymphoma
Correct Answer: C
Rationale: Undescended testis is a well-documented risk factor for yolk sac tumors and other testicular cancers.
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Nurse Lorna is assessing infantile reflexes in a 9-month-old baby; which of the following would she identify as normal?
- A. Persistent rooting
- B. Bilateral parachute
- C. Absent moro reflex
- D. Unilateral grasp
Correct Answer: B
Rationale: The parachute reflex typically emerges around 9 months of age and is considered a normal reflex in infants. This reflex is characterized by the infant extending their arms to protect themselves when they feel like they are falling. This is an important protective reflex that helps a child develop their sense of balance and coordination. Persistent rooting is not a normal reflex in a 9-month-old baby, as it typically disappears by 4 months of age. The Moro reflex is typically present in infants and involves an outstretched movement of the arms when startled, so its absence would not be considered normal at this age. A unilateral grasp is also not a normal reflex at 9 months, as infants should be able to show coordinated bilateral movements by this age.
Which of the following immunoglobulins is first produced during an acute infection?
- A. IgG
- B. IgE
- C. IgM
- D. IgD
Correct Answer: C
Rationale: IgM is the first immunoglobulin produced during an acute infection. It is the first class of antibodies secreted by B cells in response to an antigenic challenge. IgM antibodies are produced initially in primary immune responses and play a crucial role in activating the complement system. IgG is produced after IgM and is the most abundant immunoglobulin in the secondary immune response. IgE is responsible for allergic reactions, and IgD's function is not fully understood but is believed to be involved in the activation of B cells.
A nurse is assessing a preterm newborn for the possibility of necrotizing enterocolitis (NEC). Which assessment findings should the nurse expect to find if NEC is confirmed? (Select all that apply.)
- A. Minimal gastric residual
- B. Abdominal distention
- C. Apnea
- D. Urinary output at 2 ml/kg/hr
Correct Answer: B
Rationale: Abdominal distention: NEC is characterized by abdominal distention due to gas and fluid accumulation in the intestines, leading to a bloated appearance of the abdomen.
You are evaluating a 6-year-old male child with Langerhans cell histiocytosis (LCH); the parents state that the most common site of bone involvement is
- A. skull
- B. vertebra
- C. mandible
- D. pelvis
Correct Answer: A
Rationale: Skull is the most common site of bone involvement in LCH.
A nurse is admitting a child to the hospital with a diagnosis of giardiasis. Which medication should the nurse expect to be prescribed?
- A. Metronidazole (Flagyl)
- B. Amoxicillin clavulanate (Augmentin)
- C. Clarithromycin (Biaxin)
- D. Prednisone (Orapred)
Correct Answer: A
Rationale: Giardiasis is an intestinal infection caused by a protozoan parasite called Giardia lamblia. Metronidazole (Flagyl) is the drug of choice for treating giardiasis in children and adults. It is an antibiotic that is effective against a wide range of anaerobic bacteria and protozoa, including Giardia lamblia. Metronidazole works by disrupting the DNA of the parasite, leading to its death. It is usually well-tolerated and has a high cure rate for giardiasis. Amoxicillin clavulanate (Augmentin) is a combination antibiotic used to treat bacterial infections, not parasitic infections like giardiasis. Clarithromycin (Biaxin) is primarily used for treating bacterial infections, such as respiratory tract infections. Prednisone (Orapred) is a corticosteroid used to reduce