Nokea
The following are true of vitamin K:
- A. It is a water-soluble vitamin
- B. It is found mainly in red meat
- C. After infancy most is synthesised by the gut flora
- D. Low levels after birth may lead to intracerebral haemorrhage
Correct Answer: C
Rationale: Vitamin K is synthesized by gut flora after infancy. It is a fat-soluble vitamin, and low levels after birth can lead to hemorrhagic disease of the newborn.
You may also like to solve these questions
A cardiac catheterization of a client with heart disease indicates the following blockages: 95% proximal left anterior descending (LAD), 99% proximal circumflex, and ? % proximal right coronary artery (RCA). The client later asks the nurse 'what does all this mean for me?' What information should the nurse provide?
- A. Blood supply to the heart is diminished by atherosclerotic lesions, which necessitate lifestyle changes.
- B. Blood vessels supplying the pumping chamber have blockages indicating a past heart attack.
- C. Three main arteries have major blockages, with only 1 to 5% of blood flow getting through to the heart muscle.
- D. The heart is not receiving enough blood, so there is a risk of heart failure and fluid retention.
Correct Answer: C
Rationale: This explanation provides a clear understanding of the severity of the blockages and the implications for the client's heart function.
Paediatric HIV infection:
- A. Is similar to adult HIV infection except for the mode of transmission
- B. Antenatal screening of pregnant women is not of proven benefit
- C. Developmental delay is a recognised presentation
- D. In an infant, the diagnosis is established first before any management steps are undertaken
Correct Answer: C
Rationale: Developmental delay is a recognized presentation of paediatric HIV infection, reflecting the impact of the virus on the developing nervous system.
Regarding coarctation of aorta
- A. Associated with Turner's syndrome
- B. Commonest is preductal type
- C. Radio femoral delay is a feature
- D. Systolic BP in lower limb is higher than in upper limb
Correct Answer: C
Rationale: Radio-femoral delay is a characteristic feature of coarctation of the aorta due to the obstruction in blood flow.
In Wilson's disease:
- A. There is an association with high caeruloplasmin levels
- B. Hepatic copper deposition is pathognomonic
- C. There is increased urinary excretion of copper
- D. There are copper deposits on the cornea
Correct Answer: D
Rationale: Copper deposits on the cornea (Kayser-Fleischer rings) are a hallmark of Wilson's disease, a genetic disorder leading to copper accumulation in tissues.
Increased left ventricular end diastolic volume is seen in:
- A. Mitral regurgitation
- B. Congestive cardiomyopathy
- C. Hypertrophic obstructive cardiomyopathy
- D. Aortic stenosis
Correct Answer: A
Rationale: Mitral regurgitation leads to increased left ventricular end-diastolic volume due to backflow of blood into the left atrium.