Question

Mrs Jones is a 55 year old woman, she is 5'6" tall and weighs 140 lbs (63.6 kg). She has suffered a stroke and is unable to eat; therefore, she is receiving a tube feeding. The tube feeding ordered for her provides: 1 calorie/mL and 40 grams of protein/1000 mL. It is infusing at a rate of 50 mL/hour for 24 hours.

Hints:

Calorie needs: Since she is close to an ideal weight and is considered noncritical care, use the formula of 30 calories per kg of weight (page 142)
Protein needs: Use the RDA for adults of 0.8 gms protein per kg of weight (page 50, note that some experts think that a range of 1.0 to 1.2 may be beneficial)
Volume: mL per hour x hours of feeding = total volume of feeding
Calories provided by tube feeding: number of calories per mL x total volume of feeding = total calories
Protein provided by tube feeding: grams of protein per liter (1000 mL) x total liters of feeding provided = grams of protein. [Liters of formula = volume of formula / 100.]

Answer 1

To calculate the total calorie requirements for Mrs. Jones, we use the formula of 30 calories per kg of weight and for protein needs, we use the RDA for adults which is 0.8 gms protein per kg of weight. The total volume of feeding is calculated by multiplying the tube feeding rate by the number of hours. The total calories provided by the tube feeding can be calculated by multiplying the number of calories per mL by the total volume of feeding and the protein provided can be calculated by multiplying the grams of protein per liter by the total liters of feeding provided.

Step-by-step explanation:

To calculate the total calorie requirements for Mrs. Jones, we first need to determine her weight in kilograms. Since she weighs 140 lbs (63.6 kg), we can use the formula of 30 calories per kg of weight. So, her calorie needs would be 63.6 kg x 30 calories/kg = 1908 calories.

To calculate the protein needs, we use the RDA for adults which is 0.8 gms protein per kg of weight. So, her protein needs would be 63.6 kg x 0.8 gms/kg = 50.88 grams.

Next, we calculate the total volume of feeding. Since the tube feeding is infusing at a rate of 50 mL/hour for 24 hours, the total volume would be 50 mL/hour x 24 hours = 1200 mL.

Finally, we can calculate the total calories provided by the tube feeding by multiplying the number of calories per mL (1 calorie/mL) by the total volume of feeding (1200 mL) which gives us 1 calorie/mL x 1200 mL = 1200 calories.

The protein provided by the tube feeding can be calculated by multiplying the grams of protein per liter (40 grams/1000 mL) by the total liters of feeding provided (1200 mL / 1000) which gives us 40 grams/1000 mL x 1.2 liters = 48 grams.