Nokea
What does the nurse explain that a ventricular septal defect will allow?
- A. Blood to shunt left to right, causing increased pulmonary flow and no cyanosis
- B. Blood to shunt right to left, causing decreased pulmonary flow and cyanosis
- C. No shunting because of high pressure in the left ventricle
- D. Increased pressure in the left atrium, impeding circulation of oxygenated blood in the circulating volume
Correct Answer: A
Rationale: Pulmonary blood flow is increased when a ventricular septal defect exists. The blood shifts from left to right because of the higher pressure in the left ventricle. This particular shift does not cause cyanosis.
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The patient most probably has
- A. severe aortic stenosis
- B. patent ductus arteriosus
- C. Williams syndrome
- D. none of the above
Correct Answer: A
Rationale: The clinical features suggest severe aortic stenosis with left ventricular hypertrophy.
Cataracts are recognised in:
- A. Hyperthyroidism
- B. Down syndrome
- C. Graves' disease
- D. PKU
Correct Answer: B
Rationale: Cataracts are a recognized feature in Down syndrome. They are not typically associated with Hyperthyroidism, Graves' disease, or PKU.
Water excretion:
- A. Is influenced by the proximal tubule
- B. Is influenced by vasopressin
- C. Depends on erythropoietin
- D. Is influenced by the ascending limb of the loop of Henle
Correct Answer: B
Rationale: Is influenced by vasopressin
The nurse reviews the laboratory results of a client during an annual physical examination and identifies a positive guaiac test of stool. Which additional serum laboratory test result should the nurse review?
- A. Glucose
- B. Platelet count
- C. White blood cell count
- D. Amylase
Correct Answer: B
Rationale: A positive guaiac test indicates gastrointestinal bleeding. A platelet count is essential to assess for thrombocytopenia, which could contribute to bleeding.
The following conditions are associated with hyperammonaemia:
- A. Reye syndrome
- B. Citrullinaemia
- C. Methylmalonic acidaemia
- D. Homocystinuria
Correct Answer: A
Rationale: Reye syndrome is associated with hyperammonaemia due to liver dysfunction and impaired urea cycle function, leading to ammonia accumulation.