A patient receives 2700mL of an IV solution containing 4g g of glucose per 100 mL .How much energy, in kilojoules, does the patient obtain from glucose, a carbohydrate?How much energy, in kilocalories, does the patient obtain from glucose?
See my response below to another post. I found values for kcal per grams glucose of 3.35 to 3.8. I have always used 4 as an average. Using 4 kcal/g you have
g glucose in 2700 mL at 4g/100 mL you have infused 4 x (2700/100) = ?g glucose.
Then kcal = 4 or whatever your notes/book give you for glucose x ?g glucose from above.
To convert kcal to joules, multiply by 1000 x 4.184 J/cal
To calculate the energy obtained from glucose, we need to determine the total amount of glucose consumed by the patient and then convert it into kilojoules and kilocalories.
First, let's calculate the total amount of glucose consumed by the patient:
The patient receives 2700 mL of the IV solution, and the glucose concentration is 4 g per 100 mL. We can set up a proportion to find out how many grams of glucose are present in 2700 mL:
(4 g) / (100 mL) = (x g) / (2700 mL)
Cross-multiply and solve for x:
x = (4 g * 2700 mL) / (100 mL)
x ≈ 108 g
Therefore, the patient consumes approximately 108 grams of glucose.
To calculate the energy obtained from glucose, we can use the following conversion factors:
1 gram of glucose = 17 kilojoules (kJ)
1 gram of glucose = 4 kilocalories (kcal)
Now we can calculate the energy obtained from glucose in kilojoules:
Energy (kJ) = 108 g * 17 kJ/g ≈ 1836 kJ
Hence, the patient obtains approximately 1836 kilojoules of energy from glucose.
To calculate the energy obtained from glucose in kilocalories:
Energy (kcal) = 108 g * 4 kcal/g = 432 kcal
Therefore, the patient obtains approximately 432 kilocalories of energy from glucose.