A physician has ordered heparin 7000 units subcutaneously daily. The medication is supplied in heparin 10,000 units in 1 mL. How many mL should be administered daily?

Rationale

0.7 mL should be administered daily.

To determine the volume of heparin to be administered, divide the ordered dosage (7000 units) by the concentration of the supplied medication (10,000 units/mL). This calculation yields 0.7 mL, which is the correct volume to administer.

A (0.07) YOUR ANSWER

This choice is incorrect because it represents a calculation error. If 7000 units were mistakenly calculated as 700 units instead of dividing by 10,000 units/mL, then 0.07 mL would be the incorrect amount. The correct calculation yields a larger volume.

B (0.14) YOUR ANSWER

This option is also incorrect. It seems to stem from a misunderstanding of the unit conversion or calculation process. Dividing 7000 units by 10,000 units/mL does not result in 0.14 mL. The actual calculation gives a volume of 0.7 mL, which is significantly larger than this choice.

C (0.7) CORRECT

Correctly calculated, this option reflects the accurate volume to administer. By dividing the ordered 7000 units by the concentration of 10,000 units/mL, the result is 0.7 mL, confirming this as the correct choice.

D (1.42) YOUR ANSWER

This choice is incorrect as it likely arises from a miscalculation, possibly confusing the units or performing an incorrect arithmetic operation. The proper calculation clearly shows that 7000 units divided by 10,000 units/mL equals 0.7 mL, making 1.42 mL an erroneous amount.

Conclusion

In administering heparin, precise calculations are essential to ensure patient safety and efficacy. The correct dosage of 0.7 mL is derived from dividing the ordered amount of 7000 units by the provided concentration of 10,000 units/mL. All other options either reflect calculation errors or misunderstandings of the dosage requirements, underscoring the importance of accuracy in medication administration.

A physician has ordered heparin 7000 units subcutaneously daily. The medication is supplied in heparin 10,000 units in 1 mL. How many mL should be administered daily?

0.7 mL should be administered daily.

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