Oregon Certified Nursing Assistant State Practice Exam

To convert ounces to milliliters, the nursing assistant should multiply by which number?

1. 30

2. 20

3. 60

4. 15

The correct answer is: 30

To convert ounces to milliliters, the correct approach is to multiply the number of ounces by 30. This is based on the conversion factor that establishes 1 ounce is approximately equal to 30 milliliters. Understanding this conversion is essential in nursing and healthcare settings, where precise measurements of liquid medications, fluids, and nutritional supplements are vital for patient safety and treatment efficacy. For instance, if a physician prescribes a medication that is measured in ounces, the nursing assistant must accurately convert that measurement to milliliters to ensure the correct dosage is administered. Using the conversion factor of 30 creates a straightforward calculation. For example, if a patient requires 2 ounces of fluid, the nursing assistant would calculate this as 2 x 30, resulting in 60 milliliters. This practice ensures that healthcare providers use standardized measurements for accurate treatment and care.