Nokea
The enzyme producing carbon monoxide within the human body is
- A. Aminolevulinic acid synthase
- B. Heme oxygenase
- C. Cyclo-oxygense
- D. Nitric oxide synthase
Correct Answer: B
Rationale: Heme oxygenase is responsible for the production of carbon monoxide during the breakdown of heme.
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A male client who reports feeling chronically fatigued has a hemoglobin of 11.0 grams/dl (110mmol/L), hematocrit of 34%, and microcytic and hypochromic red blood cells (RBCs). Based on these findings, which dinner selection should the nurse suggest to the client?
- A. Cheese pasta and a lettuce and tomato salad
- B. Beef steak with steamed broccoli and orange slices
- C. Broiled white fish with a baked sweet potato
- D. Grilled shrimp and season rice with asparagus salad
Correct Answer: B
Rationale: The client's lab results indicate iron deficiency anemia. Beef steak is rich in iron, and vitamin C from orange slices enhances iron absorption, making this the best choice to address the anemia.
Which assessment indicates that the parent of a 7-year-old is following the prescribed treatment for congestive heart failure (CHF)?
- A. HR of 56 beats per minute
- B. Elevated red blood cell count
- C. 50th percentile height and weight for age
- D. Urine output of 0.5 cc/kg/hr
Correct Answer: C
Rationale: Normal growth (50th percentile) indicates good nutrition and overall health, suggesting that CHF is well controlled.
All the following statements about spontaneous coronary artery dissection are true, except
- A. More common in young females
- B. Proximal coronary involvement associated with immuno-inflammatory disease
- C. Intra-coronary imaging shows 'accordion sign'
- D. Physical stress precipitates it by causing intimal tear
Correct Answer: C
Rationale: The 'accordion sign' is not typically associated with spontaneous coronary artery dissection.
While looking through the chart of an infant with a congenital heart defect (CHD) of decreased pulmonary blood flow, the nurse would expect which laboratory finding?
- A. Decreased platelet count
- B. Decreased ferritin level
- C. Respiratory alkalosis
- D. Polycythemia
Correct Answer: D
Rationale: Polycythemia is often seen in infants with congenital heart defects that cause decreased pulmonary blood flow, as the body produces more red blood cells to compensate for low oxygen levels.
All of the following are true about a small VSD EXCEPT
- A. spontaneous closure is more common in muscular vs. membranous defects
- B. closure usually occurs in the first 2 years of life
- C. there is no risk of endocarditis
- D. pulmonary pressures are normal
Correct Answer: C
Rationale: Even small VSDs carry a risk of endocarditis until they close.