Concerning tetanus:
- A. The infection is usually fatal
- B. The muscle spasms are often localized
- C. Immunization confers lifelong immunity
- D. Incubation period is usually weeks
Correct Answer: C
Rationale: Immunization with the tetanus toxoid provides long-lasting immunity, though booster shots are recommended to maintain protection.
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Contributing features to renal osteodystrophy include:
- A. Hypophosphataemia
- B. Hyperparathyroidism
- C. Increased loss of calcium in the kidney
- D. Hypoalbuminaemia
Correct Answer: B
Rationale: Hyperparathyroidism is a key contributor to renal osteodystrophy due to secondary hyperparathyroidism in chronic kidney disease.
The following statements are true:
- A. Unexplained vaginal discharge in a 3-year-old might be a sign of sexual abuse
- B. Spiral fracture of femur is always non-accidental
- C. Retinal bleeding in a 3-month-old unconscious baby is a sign of 'shaken baby' syndrome
- D. Bruises on the elbows and knees in a 4-year-old are suggestive of physical abuse
Correct Answer: C
Rationale: Retinal bleeding in a 3-month-old unconscious baby is a sign of 'shaken baby' syndrome: Retinal bleeding in infants, especially with other signs of physical abuse, is a key indicator of 'shaken baby' syndrome.
The following cardiac lesions are at increased risk for bacterial endocarditis EXCEPT
- A. mitral insufficiency
- B. aortic stenosis
- C. atrial septal defect seccundum
- D. coarctation of the aorta
Correct Answer: C
Rationale: ASD seccundum is generally not considered a high-risk lesion for bacterial endocarditis.
Increased TSH is seen in a neonate with:
- A. Thyroxine insensitivity
- B. Iodine deficiency
- C. Hyperbilirubinaemia
- D. Thyroid agenesis
Correct Answer: B
Rationale: Iodine deficiency: Neonates with iodine deficiency often present with increased TSH levels as the body attempts to compensate for low thyroid hormone production.
Indications for an exchange transfusion include:
- A. ABO incompatibility
- B. Acute chest syndrome
- C. Sepsis
- D. Polycythaemia
Correct Answer: A
Rationale: Exchange transfusion is indicated in conditions like ABO incompatibility to prevent severe hemolytic disease in newborns. Acute chest syndrome sepsis polycythaemia and sickle nephropathy are not typical indications for exchange transfusion.