Urine Output Calculations

Flashcards about urine output calculations and considerations.

Minimum Hourly Urine Output

The minimum expected urine output for a patient is 30 mL/hour.

Expected Urine Output Over 6 Hours

A patient should produce at least 180 mL of urine over 6 hours.

Expected Urine Output Over 7 Hours

A patient's Foley catheter shows 210 mL in 7 hours, which is the expected amount.

Normal Daily Urine Output

Normal daily urine output is typically around 1,200-1,500 mL/day.

1,080 mL/day Urine Output

A urine output of 1,080 mL/day is on the slightly low end of the normal daily average.

Minimum Urine Output in 24 Hours

A patient should produce at least 720 mL in 24 hours.

240 mL Urine Output Deficit

A deficit of 240 mL indicates a potential risk of dehydration.

90 mL in 6 Hours Urine Output

Producing 90 mL of urine in 6 hours is less than the expected amount, indicating possible oliguria.

Oliguria

Oliguria is defined as a urine output of less than 0.5 mL/kg/hour.

Expected Output Over 6 Hours

The expected amount of urine output over 6 hours is 180 mL.

A patient's urine output is 150 mL over 6 hours. Is this within the expected range? Why or why not?

Compare the patient's urine output to the expected output of 180 mL over 6 hours. Since 150 mL is less than 180 mL, this is below the expected range, potentially indicating dehydration or kidney issues.

A patient weighs 60 kg. What is the minimum hourly urine output that would indicate normal kidney function?

Calculate the minimum hourly urine output using the formula: 0.5 mL/kg/hour. For a 60 kg patient, this would be 0.5 \times 60 = 30 mL/hour. This is the minimum acceptable output.

A patient has a urine output of 800 mL in 24 hours. Is this sufficient?

First calculate the minimum expected output in 24 hours, multiplying the hourly minimum (30 mL) by 24 hours, which equals 720 mL. Since the patient exceeded the minimum, it shows adequate hydration and kidney function.