Nokea
In normal neonates:
- A. Extracellular fluid volume exceeds intracellular fluid volume
- B. In a term baby, plasma calcium levels exceed that of the mother
- C. Clamping the umbilical cord after cessation of cord pulsations increases the blood volume by 20% in the baby
- D. There are two arteries and one vein in the umbilical cord
Correct Answer: A
Rationale: In neonates, extracellular fluid volume is greater than intracellular fluid volume, reflecting the transition from intrauterine to extrauterine life.
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In the electrocardiogram of a 40-year old male, the QRS amplitude in lead I and aVF measured (+) 10 and (-)10mV respectively. The frontal QRS axis is
- A. (+) 15°
- B. (-) 45°
- C. (-) 75°
- D. (-) 90°
Correct Answer: B
Rationale: The frontal QRS axis is (-) 45° given the QRS amplitudes in leads I and aVF.
Distal renal tubular acidosis:
- A. Is characterised by hypokalaemia
- B. May be primary or secondary
- C. Presents with growth failure in infancy
- D. Urinary pH is usually < 5
Correct Answer: B
Rationale: Distal renal tubular acidosis (RTA) can be either primary (inherited) or secondary (acquired due to other conditions), affecting acid excretion in the distal tubule.
A client with carcinoma of the lung is complaining of weakness and has a serum sodium level of 117 mEq/L. Which nursing problem should the nurse include in this client's plan of care?
- A. Altered urinary elimination
- B. Impaired gas exchange
- C. Fluid volume excess
- D. Decreased cardiac output
Correct Answer: C
Rationale: Hyponatremia (low sodium level) is often associated with fluid volume excess in clients with lung carcinoma.
Which is the most common causative agent of bacterial endocarditis?
- A. Staphylococcus albus
- B. Streptococcus hemolyticus
- C. Staphylococcus albicans
- D. Streptococcus viridans
Correct Answer: D
Rationale: S. viridans is the most common causative agent in bacterial (infective) endocarditis.
List FOUR other cardiac manifestations for Marfan’s syndrome, aside from aortopathy.
- A. Mitral valve prolapse/regurgitation
- B. Calcification of the mitral valve <40 years
- C. Dilation of pulmonary artery
- D. Dilation or dissection of ascending/descending aorta (<50 years old)
Correct Answer: A
Rationale: Marfan's syndrome may involve multiple cardiac complications including mitral valve prolapse and other structural heart abnormalities.