Nokea
Neural crest derivatives include:
- A. Adrenal cortical cells
- B. Melanocytes
- C. Langerhans cells
- D. Gastric epithelial cells
Correct Answer: B
Rationale: Melanocytes are derived from the neural crest and are responsible for pigment production in the skin.
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Increased pulmonary markings (increased pulmonary blood flow) is seen in
- A. pulmonary atresia
- B. truncus arteriosus
- C. tetralogy of Fallot
- D. tricuspid atresia
Correct Answer: B
Rationale: Truncus arteriosus results in increased pulmonary blood flow leading to increased pulmonary markings on chest X-ray.
An adult client is admitted with diabetic ketoacidosis (DKA) and a urinary tract infection (UTI). Prescriptions for intravenous antibiotics and an insulin infusion are initiated. Which serum laboratory value warrants the most immediate intervention by the nurse?
- A. Glucose of 350 mg/dl
- B. White blood cell count of 15,000 mm3
- C. Blood PH of 7.30
- D. Potassium of 2.5 mEq/L
Correct Answer: D
Rationale: A potassium level of 2.5 mEq/L is dangerously low and must be corrected immediately to prevent cardiac arrhythmias.
Recognised features in Ehlers-Danlos syndrome include:
- A. Mutation in fibrillin gene
- B. Short stature
- C. Keratoconus
- D. Easy scarring
Correct Answer: D
Rationale: Easy scarring: Ehlers-Danlos syndrome is characterized by hyperelastic skin and joint hypermobility, with easy scarring and tissue fragility being common features.
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.
The nurse is assessing a child after a cardiac catheterization. Which complication should the nurse be assessing for?
- A. Cardiac arrhythmia
- B. Hypostatic pneumonia
- C. Heart failure
- D. Rapidly increasing blood pressure
Correct Answer: A
Rationale: Because a catheter is introduced into the heart, a risk exists of catheter-induced dysrhythmias occurring during the procedure. These are usually transient. Hypostatic pneumonia, heart failure, and rapidly increasing blood pressure are not risks usually associated with cardiac catheterization.