Nokea
What is one of the most frequent causes of hypovolemic shock in children?
- A. Sepsis
- B. Blood loss
- C. Anaphylaxis
- D. Congenital heart disease
Correct Answer: B
Rationale: Blood loss is the most frequent cause of hypovolemic shock in children. Sepsis causes septic shock, which is overwhelming sepsis and circulating bacterial toxins. Anaphylactic shock results from extreme allergy or hypersensitivity to a foreign substance. Congenital heart disease contributes to hypervolemia, not hypovolemia.
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The most appropriate first-line treatment for status epilepticus in a child is:
- A. Diazepam
- B. Phenytoin
- C. Carbamazepine
- D. Valproate
Correct Answer: A
Rationale: Diazepam is commonly used as the first-line treatment in managing status epilepticus due to its fast-acting, long-lasting anticonvulsant effects.
A nurse assesses clients on a medical-surgical unit. Which client should the nurse identify as having the greatest risk for cardiovascular disease?
- A. An 86-year-old man with a history of asthma
- B. A 32-year-old Asian-American man with colorectal cancer
- C. A 45-year-old American Indian woman with diabetes mellitus
- D. A 53-year-old postmenopausal woman who is on hormone therapy
Correct Answer: C
Rationale: Diabetes mellitus is a significant risk factor for cardiovascular disease, and the 45-year-old American Indian woman with diabetes mellitus has the highest risk among the options provided.
All the following statements about spontaneous coronary artery dissection are true, except
- A. More common in young females
- B. Proximal coronary involvement associated with immuno-inflammatory disease
- C. Intra-coronary imaging shows 'accordion sign'
- D. Physical stress precipitates it by causing intimal tear
Correct Answer: C
Rationale: The 'accordion sign' is not typically associated with spontaneous coronary artery dissection.
Which physiological changes occur as a result of hypoxemia in congestive heart failure (CHF)?
- A. Polycythemia and clubbing
- B. Anemia and barrel chest
- C. Increased white blood cells and low platelets
- D. Elevated erythrocyte sedimentation rate and peripheral edema
Correct Answer: A
Rationale: Hypoxemia stimulates erythropoiesis, causing polycythemia, which along with chronic hypoxemia can lead to digital clubbing.
Causes of a discrete osteolytic bone lesion in a two-year-old include:
- A. Rickets
- B. Non-accidental injury
- C. Eosinophilic granuloma
- D. Acute lymphoblastic leukaemia
Correct Answer: C
Rationale: Eosinophilic granuloma is a benign bone lesion that can present with osteolytic lesions, typically seen in children as part of Langerhans cell histiocytosis.