A child with severe anemia requires a unit of red blood cells (RBCs). The nurse explains to the child that the transfusion is necessary to:

To calculate the daily fluid requirements for a child, you typically use the Holliday-Segar method, which provides guidelines based on the child's weight:

1. For the first 10 kg of body weight, you give 100 ml per kg.
2. For the second 10 kg of body weight, you give 50 ml per kg.
3. For any weight above 20 kg, you give 20 ml per kg.

First, convert the child's weight from pounds to kilograms. To do this, divide the weight in pounds by 2.2.

For a child weighing 33 pounds:

• The weight in kilograms is approximately 15 kg (33 divided by 2.2).

Now, calculate the fluid requirement:

• For the first 10 kg of the child's weight, you need 1000 ml (10 kg multiplied by 100 ml).
• For the remaining 5 kg, you need 250 ml (5 kg multiplied by 50 ml).

Adding these together, the total daily fluid requirement is 1250 ml.

So, the daily fluid requirement for a child weighing 33 pounds is 1250 ml.

In this scenario, the infant has a heart rate of 190/min and a fever of 40°C (104°F). Fever in infants can cause an increase in heart rate, which is a normal physiological response to elevated body temperature. Fever is the body's way of responding to an infection or illness, and it triggers various physiological changes, including an increase in heart rate. This helps the body to circulate blood and deliver immune cells to fight off the infection.
The other options are not accurate or relevant to the infant's current condition:
A. "This is within the expected range for your baby." - A heart rate of 190/min is above the normal expected range for a 2-month-old infant, which is typically between 120 to 160 beats per minute. This response would not address the elevated heart rate and fever.
C. "As your baby begins to fall asleep, his heart rate will decrease." - While heart rate may decrease during sleep, it does not explain the elevated heart rate and fever observed in this situation.
D. "Your baby's heart is beating fast in an attempt to cool down his body." - While tachycardia (fast heart rate) can be associated with increased metabolic demands during fever, the main reason for the increased heart rate in this case is the fever itself, not the body's attempt to cool down. Fever is a response to infection or illness and can cause an increase in heart rate as part of the body's normal immune response.