Question

What is a minimally acceptable urine output for a patient weighing 75 kg?

1) Less than 30 mL/hour
2) 37 mL/hour
3) 80 mL/hour
4) 150 mL/hour

Answer 1

The minimally acceptable urine output for a 75 kg patient is 37 mL/hour, aligning with the lower bound of the minimum range of 0.5 to 1 mL/kg/hour. Values less than this may indicate oliguria, whereas values higher than the minimum are generally adequate.

Step-by-step explanation:

The minimally acceptable urine output for a patient to rid the body of wastes is generally around 500 mL/day. For a patient weighing 75 kg, the minimum urine output is calculated based on the standard requirement per kilogram of body weight, which is about 0.5 to 1 mL/kg/hour. Thus, for a 75 kg patient, the minimum would range from 37.5 to 75 mL/hour.

When considering the answer choices given:

1. Less than 30 mL/hour would be indicative of oliguria
2. 37 mL/hour aligns with the lower bound of the minimum acceptable range
3. 80 mL/hour is above the minimum required and is generally considered adequate
4. 150 mL/hour is also well above the minimum required.

Therefore, the closest answer to the minimally acceptable urine output for a 75 kg patient is option 2, which is 37 mL/hour.