Nokea
The following syndromes are caused by 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, characterized by short stature, infertility, and heart defects.
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A 16-year-old being treated for hypertension has laboratory values of: Hemoglobin: 16 g/dL Hematocrit: 43% Sodium: 139 mEq/L Potassium: 4.4 mEq/L Total cholesterol: 220 mg/dL Which drug does the nurse suspect the patient takes based on the total cholesterol?
- A. Beta blockers
- B. Calcium channel blockers
- C. ACE inhibitors
- D. Diuretics
Correct Answer: A
Rationale: Beta blockers are used with caution in patients with hyperlipidemia, hyperglycemia, and impotence.
Malabsorption may be seen in:
- A. Ischaemia of the gut
- B. Giardiasis
- C. Lymphoma of the ileum
- D. Chronic lead poisoning
Correct Answer: B
Rationale: Giardiasis, caused by the parasite Giardia lamblia, is a well-known cause of malabsorption.
The school nurse has been following a child who frequently complains of dizziness and headache. Today, she is brought in after fainting in the cafeteria following a nosebleed. Her BP is 122/85, and her radial pulses are bounding. The nurse suspects she has:
- A. Transposition of the great vessels
- B. Coarctation of the aorta (COA)
- C. Aortic stenosis (AS)
- D. Pulmonic stenosis (PS)
Correct Answer: B
Rationale: In older children, COA can cause elevated blood pressure, headache, fainting, and bounding radial pulses.
Hemodynamic definition of 'Isolated post-capillary Pulmonary Hypertension' is
- A. Pulmonary artery wedge pressure > 15 mm Hg
- B. Right ventricular systolic pressure > 36 mm Hg
- C. Diastolic pressure gradient < 7 mm Hg
- D. Pulmonary vascular resistance > 3 Wood units
Correct Answer: A
Rationale: Isolated post-capillary pulmonary hypertension is defined by a pulmonary artery wedge pressure greater than 15 mm Hg.
In bronchopulmonary dysplasia:
- A. Lung compliance is increased
- B. Bronchial reactivity is increased
- C. Lung function typically improves with age
- D. Hyperinflation is an associated finding
Correct Answer: D
Rationale: Hyperinflation is a common finding in bronchopulmonary dysplasia due to lung damage and the need for prolonged mechanical ventilation.