1. 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?
Answer: C
The required dosage to be administered daily is 0.7 mL.
To administer 7000 units of heparin, which is supplied at a concentration of 10,000 units per mL, the calculation shows that 0.7 mL is necessary for the prescribed dosage.
A) 0.07
This option is incorrect because administering 0.07 mL would only provide 700 units of heparin, which is significantly less than the required 7000 units.
B) 0.14
This option is also incorrect, as 0.14 mL would result in 1400 units of heparin. This amount is still far below the required dosage of 7000 units.
C) 0.7
This option is correct because administering 0.7 mL will deliver exactly 7000 units of heparin. The calculation is straightforward: 7000 units divided by 10,000 units/mL equals 0.7 mL.
D) 1.42
This option is incorrect as 1.42 mL would provide 14200 units of heparin, exceeding the required dosage of 7000 units significantly.
Conclusion
The correct answer is 0.7 mL, as it accurately delivers the prescribed dose of heparin based on the supplied concentration. All other options fail to meet the required dosage, either falling short or exceeding the necessary amount. Thus, understanding the conversion and calculation for medication dosage is crucial in medical practice.