An inborn error of metabolism that causes a premature destruction of RBC?

Correct Answer: A

Rationale: Glucose-6-phosphate dehydrogenase (G6PD) deficiency is an inborn error of metabolism that leads to the premature destruction of red blood cells (hemolysis). G6PD is an enzyme responsible for protecting red blood cells from oxidative damage. In individuals with G6PD deficiency, the red blood cells are more susceptible to oxidative stress, leading to their destruction and resulting in hemolytic anemia. This condition is commonly triggered by certain medications, infections, or dietary factors that cause oxidative stress, leading to hemolysis. Homocystinuria, Phenylketonuria, and Celiac Disease are metabolic disorders that do not typically result in the premature destruction of red blood cells.

Correct Answer: C

Rationale: Pernicious anemia is a condition caused by a deficiency in vitamin B12 absorption due to the lack of intrinsic factor, a protein necessary for B12 absorption in the gastrointestinal tract. If a patient does not take vitamin B12, they can develop pernicious anemia. This condition leads to the inability to produce enough healthy red blood cells, resulting in anemia. Symptoms of pernicious anemia include fatigue, weakness, shortness of breath, and pale or yellowish skin. It is important for patients to take vitamin B12 supplements or receive injections if they are unable to absorb the vitamin properly in order to prevent or treat pernicious anemia.

Correct Answer: C

Rationale: When calculating the appropriate dose of morphine for a client, the nurse should consider the client's body weight. The most commonly used formula for calculating the appropriate dose of morphine is 0.1 to 0.2 mg/kg of body weight for hourly dosing or 2.5 to 10 mg/kg/day for continuous infusions.

Correct Answer: A

Rationale: Respiratory distress syndrome is primarily caused by deficient surfactant production in premature infants. Surfactant is a substance that coats the alveoli in the lungs and helps to reduce surface tension, preventing the collapse of the alveoli during exhalation. In premature infants, the lungs may not have produced enough surfactant, leading to difficulty in breathing and inadequate oxygen exchange. This results in respiratory distress syndrome, which is characterized by severe breathing problems in newborns. Overproduction of surfactant, overdeveloped alveoli, or absence of alveoli are not central factors in the development of respiratory distress syndrome.

Correct Answer: D

Rationale: Risk for obesity does not necessarily fall by 6 years.