Which is a common, serious complication of rheumatic fever?
- A. Seizures
- B. Cardiac arrhythmias
- C. Pulmonary hypertension
- D. Cardiac valve damage
Correct Answer: D
Rationale: Cardiac valve damage is the most significant complication of rheumatic fever. Seizures, cardiac arrhythmias, and pulmonary hypertension are not common complications of rheumatic fever.
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A tuberculosis intradermal skin test to detect tuberculosis infection is given to a high-risk adolescent. How long after the test is administered should the result be evaluated?
- A. Immediately
- B. Within 24 hours
- C. In 48 to 72 hours
- D. After 5 days
Correct Answer: C
Rationale: The tuberculin skin test reaction peaks in 48 to 72 hours, making this the optimal time for evaluation.
Left axis deviation of the QRS complex is associated with all the following except
- A. Inflow ventricular septal defect
- B. Pulmonary atresia with intact interventricular septum
- C. Double outlet right ventricle with subaortic ventricular septal defect
- D. Noonan syndrome with pulmonary stenosis
Correct Answer: A
Rationale: Left axis deviation is not typically associated with inflow ventricular septal defect.
The nurse reviews the laboratory results for a child with a suspected diagnosis of rheumatic fever. The nurse knows that which laboratory study would assist in confirming the diagnosis?
- A. Immunoglobulin
- B. Red blood cell count
- C. White blood cell count
- D. Anti-streptolysin O titer
Correct Answer: D
Rationale: The Anti-streptolysin O titer is used to confirm a diagnosis of rheumatic fever as it indicates a recent streptococcal infection, which is a precursor to rheumatic fever.
The following antibodies are seen in the conditions mentioned:
- A. Anti-endomysial antibodies in coeliac disease
- B. Anti-insulin receptor antibodies in diabetes mellitus
- C. Anti-epidermal antibodies in vitiligo
- D. Anti-acetylcholine receptor antibodies in spinal muscular atrophy
Correct Answer: A
Rationale: Anti-endomysial antibodies are specifically associated with coeliac disease, making (a) the correct answer. The other options are incorrect as they describe antibodies associated with different conditions.
Pulsus paradoxus is associated with
- A. pericarditis
- B. endocarditis
- C. rheumatic fever
- D. myocarditis
Correct Answer: A
Rationale: Pulsus paradoxus is commonly associated with pericardial diseases such as constrictive pericarditis.