Instructions: Calculate the flow rate in units/hr (Equipment used is programmable in whole units/hr). Order: 100,000 units of Heparin in 1,000 mL to infuse at 50 mL/hr. Calculate the rate in units/hr.
A.
5000 units/hr
B.
500 units/hr
C.
2000 units/hr
D.
2500 units/hr
E.
2500 units/hr
The correct answer and Explanation is :
To calculate the flow rate in units per hour, follow these steps:
- Determine the concentration of Heparin: The total amount of Heparin in the solution is 100,000 units in 1,000 mL. To find the concentration in units per mL, use the formula: [
\text{Concentration} = \frac{\text{Total Units}}{\text{Total Volume}} = \frac{100,000 \text{ units}}{1,000 \text{ mL}} = 100 \text{ units/mL}
] - Calculate the flow rate in units per hour: The infusion rate is 50 mL per hour. To find out how many units are infused per hour, multiply the flow rate in mL per hour by the concentration in units per mL: [
\text{Flow Rate in Units/hr} = \text{Infusion Rate (mL/hr)} \times \text{Concentration (units/mL)}
] Plugging in the values: [
\text{Flow Rate in Units/hr} = 50 \text{ mL/hr} \times 100 \text{ units/mL} = 5,000 \text{ units/hr}
]
Thus, the flow rate is 5,000 units/hr. The correct answer is:
A. 5000 units/hr
Explanation:
The calculation involves first determining the concentration of the Heparin solution by dividing the total number of units by the total volume of the solution. This concentration tells us how many units are present in each milliliter of the solution. Next, to find out how many units are delivered per hour, you multiply the concentration by the infusion rate (in mL/hr). This gives you the total units being delivered each hour, which, in this case, is 5,000 units per hour. This value is necessary to ensure that the patient receives the correct dosage of Heparin as per the prescribed infusion rate.