A nurse is preparing to administer digoxin to a 6-month-old infant. Before administering the dose, the nurse measures the apical heart rate.

The nurse should withhold the dose if the infant’s apical heart rate is less than what rate? .

Choice A rationale
Keeping the head of the bed at a 30-degree angle is not typically necessary following scoliosis repair with Harrington rod instrumentation. The position of the bed is usually determined by the patient’s comfort and the surgeon’s specific post-operative instructions.
Choice B rationale
Initiating the use of a PCA (Patient-Controlled Analgesia) pump for pain control is a common intervention following scoliosis repair with Harrington rod instrumentation. This allows the patient to self-administer pain medication as needed, providing effective and individualized pain control.
Choice C rationale
Repositioning the client by log rolling every 4 hours is a common practice after spinal surgery to prevent pressure ulcers and maintain alignment of the spine. However, it is not the primary intervention in this case.
Choice D rationale
Placing the client in protective isolation is not typically necessary following scoliosis repair with Harrington rod instrumentation. Isolation is usually reserved for patients who are at high risk of infection or who have an infection that could be transmitted to others.

Choice A rationale
While fat-soluble vitamins are essential for overall health, they do not specifically prevent iron deficiency anemia. Iron deficiency anemia occurs when the body doesn’t have enough iron to produce hemoglobin, the part of red blood cells that gives them their red color and enables them to carry oxygen in the blood.
Choice B rationale
Limiting intake of high-protein foods is not a recommended method for preventing iron deficiency anemia. In fact, many high-protein foods, such as meat and eggs, are good sources of iron.
Choice C rationale
While fluoridated water can help prevent tooth decay, it does not prevent iron deficiency anemia. Iron deficiency anemia is prevented by consuming adequate amounts of iron, either from food sources or from supplements.
Choice D rationale
A diet that consists primarily of milk, particularly cow’s milk, can contribute to iron deficiency anemia. Cow’s milk is low in iron and can also decrease absorption of iron and irritate the lining of the intestine, causing small amounts of bleeding and the gradual loss of iron in the stool (poop)4.