Nokea
Which is usually the only symptom of pediculosis capitis (head lice)?
- A. Itching
- B. Vesicles
- C. Scalp rash
- D. Localized inflammatory response
Correct Answer: A
Rationale: The most common symptom of pediculosis capitis, also known as head lice infestation, is itching of the scalp. Head lice feed on blood from the scalp, leading to irritation and allergic reactions, causing itching. Itching is often more prominent behind the ears and at the nape of the neck where head lice tend to lay their eggs (nits). While secondary symptoms such as scalp rash, vesicles, and localized inflammatory responses can occur due to scratching or allergic reactions, itching is typically the initial and predominant symptom of head lice infestation.
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A 3-year-old boy is hospitalized after falling down the stairs. His mother cries, 'This is all my fault.' Which is the nurse's best response?
- A. Accidents happen; you shouldn't blame yourself.
- B. Falls are one of the most common injuries in this age group.
- C. It might help to install a baby gate on the stairs.
- D. Your son should be proficient at walking down stairs by now.
Correct Answer: B
Rationale: Reassuring the parent that falls are common in young children can help reduce guilt and anxiety.
When can a donor and recipient of blood be considered compatible?
- A. If there is no change in the blood color when both samples are mixed in the laboratory
- B. If there are blood clots when both samples are mixed in the laboratory
- C. If there is no clumping or hemolysis when both samples are mixed in the laboratory
- D. If a blood drop does not sink when dropped in water after both samples are mixed in the laboratory
Correct Answer: C
Rationale: Compatibility between a donor and recipient of blood is determined by testing for compatibility of blood types. The most common blood typing systems are ABO and Rh. In compatibility testing, both the donor and recipient blood samples are mixed in the laboratory. If there is no clumping (agglutination) or hemolysis (rupture of red blood cells) observed when the samples are mixed, then the donor and recipient are considered compatible. Clumping or hemolysis indicates an incompatible blood transfusion, which can lead to serious complications like agglutination, blood clotting, or immune responses. Therefore, the absence of clumping or hemolysis is a key indicator of blood compatibility in transfusion medicine.
A newborn is diagnosed with retinopathy of prematurity. What should the nurse know about this diagnosis?
- A. Blindness cannot be prevented.
- B. No treatment is currently available.
- C. Cryotherapy and laser therapy are effective treatments.
- D. Long-term administration of oxygen will be necessary.
Correct Answer: C
Rationale: Retinopathy of prematurity (ROP) is a disorder of the developing retinal blood vessels in premature infants. Cryotherapy and laser therapy are both effective treatments for ROP. These treatments can help prevent vision loss and improve the chances of maintaining good vision. Prompt detection and intervention are key in managing ROP to prevent long-term visual impairment. Therefore, the nurse should be aware that cryotherapy and laser therapy are effective interventions for ROP, contrary to the options suggesting blindness cannot be prevented or no treatment is available. Long-term administration of oxygen can contribute to the development of ROP, so careful monitoring and management of oxygen levels are necessary in premature infants to prevent this condition.
Mr. Galino is diagnosed to have Raynaud's disease. Nurse Oliver gives instructions to the client to stop smoking because it causes:
- A. cyanosis and necrosis
- B. vasoconstriction, vasospasms
- C. decreased blood oxygen content
- D. pain and tingling
Correct Answer: B
Rationale: Raynaud's disease is a condition characterized by vasospasms of the small arteries, usually in the fingers and toes, in response to cold temperatures or stress. Smoking can worsen the symptoms of Raynaud's disease because it causes vasoconstriction, which is the narrowing of blood vessels. Nicotine in cigarettes can trigger vasospasms, leading to further restriction of blood flow to the extremities. Therefore, it is essential for individuals with Raynaud's disease to stop smoking to help improve blood circulation and reduce the frequency and severity of vasospasms.
Laboratory findings consistent with acute glomerulonephritis include all of the following except :
- A. hematuria.
- B. polyuria.
- C. proteinuria.
- D. white cell casts.
Correct Answer: B
Rationale: Acute glomerulonephritis is a condition characterized by inflammation of the glomeruli in the kidneys, leading to kidney dysfunction. Common laboratory findings consistent with acute glomerulonephritis include hematuria (blood in the urine), proteinuria (protein in the urine), and white cell casts (indicative of inflammation in the kidney tubules). Polyuria, which refers to excessive urination, is not a typical laboratory finding associated with acute glomerulonephritis. Instead, patients with acute glomerulonephritis often present with oliguria or reduced urine output due to impaired kidney function. Therefore, polyuria is not consistent with the typical laboratory findings of acute glomerulonephritis.