75. How many days would a bottle of Humulin N 10 mL last a patient using 28 units in the morning and 8 units in the evening?
Answer: C
The bottle of Humulin N 10 mL would last 27 days for the patient.
The total daily usage of Humulin N for the patient is 36 units (28 units in the morning and 8 units in the evening). A 10 mL bottle contains 1000 units of insulin, so dividing 1000 by 36 gives approximately 27.78, which rounds down to 27 days of use.
A) 3
Option A is incorrect because 3 days of usage would suggest a much higher daily intake. With the patient's total daily requirement of 36 units, a 10 mL bottle containing 1000 units would last significantly longer than just 3 days.
B) 10
Option B is also incorrect as it underestimates the duration the insulin would last. At a daily consumption of 36 units, the patient would have enough supply for more than 10 days, calculated to be around 27 days.
C) 27
Option C is correct. The calculation shows that the total number of units in the 10 mL bottle (1000 units) divided by the total daily dose (36 units) results in approximately 27 days of use, confirming this as the accurate answer.
D) 30
Option D is incorrect because it overestimates the time the bottle would last. Given the daily total of 36 units, a 30-day supply would require 1080 units, which exceeds the 1000 units available in the 10 mL bottle.
Conclusion
The correct answer is 27 days, derived from calculating the total insulin units available against the patient's daily requirements. The other options misinterpret the dosage and duration, failing to reflect the actual usage based on the provided information. Thus, only Option C accurately represents the situation.