Nokea
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
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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.
The initial treatment of choice for a symptomatic patient with isolated pulmonic stenosis is
- A. closed surgical blade valvotomy
- B. open surgical valvotomy
- C. balloon catheter valvuloplasty
- D. Blalock-Taussig shunt
Correct Answer: C
Rationale: Balloon catheter valvuloplasty is less invasive and effective for relieving pulmonic stenosis.
What are the SIX anatomic features associated with AVSD?
- A. AV-valve leaflets at the same level
- B. Absent AV septum
- C. Unwedged aortic valve
- D. Gooseneck elongated LVOT
Correct Answer: D
Rationale: AVSD involves multiple anatomic features that lead to a characteristic appearance and functional issues in the heart.
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.
The following syndromes are due to chromosomal abnormalities:
- A. Cri-du-chat syndrome
- B. Kearns-Sayre syndrome
- C. Marfan's syndrome
- D. Turner's syndrome
Correct Answer: D
Rationale: Turner's syndrome: Turner's syndrome is caused by a monosomy of the X chromosome (45,X), leading to characteristic features such as short stature and ovarian insufficiency.