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What are FIVE indications for surgical intervention in infective endocarditis?
- A. Heart block
- B. Abscess
- C. Valve dysfunction causing heart failure
- D. Large mobile vegetation
Correct Answer: A
Rationale: These are typical indications for surgery when complications of infective endocarditis progress to life-threatening stages.
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Afterload reducers are not indicated in children with heart failure secondary to
- A. cardiomyopathy
- B. severe mitral insufficiency
- C. aortic stenosis
- D. ventricular septal defect
Correct Answer: C
Rationale: Afterload reducers are contraindicated in conditions where forward flow is already compromised, such as aortic stenosis.
22q11 deletion is commonly associated with all except
- A. Tetralogy of Fallot
- B. Truncus arteriosus
- C. Interrupted aortic arch
- D. D-Transposition of great arteries
Correct Answer: D
Rationale: 22q11 deletion is not commonly associated with D-Transposition of great arteries.
The parents of a young child with heart failure tell the nurse that they are “nervous†about giving digoxin (Lanoxin). The nurse’s response should be based on which statement?
- A. It is a safe, frequently used drug.
- B. It is difficult to either overmedicate or undermedicate with digoxin.
- C. Parents lack the expertise necessary to administer digoxin.
- D. Parents must learn specific, important guidelines for administration of digoxin.
Correct Answer: D
Rationale: Digoxin has a narrow therapeutic range. The margin of safety between therapeutic, toxic, and lethal doses is very small. Specific guidelines are available for parents to learn how to administer the drug safely and to monitor for side effects. Digoxin is a frequently used drug, but it has a narrow therapeutic range. Small amounts of the liquid are given to infants, making it easy to overmedicate or undermedicate. Parents may lack the necessary expertise to administer the drug at first, but with discharge preparation, they should be prepared to administer the drug safely.
Blueberry muffin' lesions seen in rubella is due to
- A. Dermal erythropoiesis
- B. Thrombocytopenia
- C. Ecchymosis
- D. Vasculitis
Correct Answer: A
Rationale: Blueberry muffin' lesions in congenital rubella are due to dermal erythropoiesis, where extramedullary hematopoiesis occurs in the skin.
The clinical features of subaortic membrane stenosis can include all, except
- A. Ejection systolic murmur
- B. Ejection click
- C. End-diastolic murmur of aortic regurgitation
- D. Low pulse volume
Correct Answer: B
Rationale: An ejection click is not typically a feature of subaortic membrane stenosis.