Complete the metric equivalent of 4 ounces or 1 cup = __ mL.

(Enter only the number, no label)

Choice A rationale:

The anterior surface of the drape is not the correct choice because it includes the central sterile area, which should never be touched by the nurse. Touching the central sterile area contaminates the field.

Choice B rationale:

The outer 1-inch border of the drape is the correct choice for the nurse to touch. This border is considered non-sterile and can be handled without contaminating the sterile field. It acts as a barrier, preventing contaminants from reaching the central sterile area.

Choice C rationale:

The top inner corners of the drape are part of the central sterile area and should not be touched by the nurse. Touching this area would contaminate the sterile field.

Choice D rationale:

The posterior aspect of the drape is not the correct choice because it is part of the central sterile area. Touching this area would contaminate the sterile field. When preparing a sterile field, it is essential for the nurse to follow strict aseptic techniques to maintain the sterility of the field. This includes touching only the designated non-sterile areas, such as the outer 1-inch border of the sterile drape, to avoid contamination.

The correct answer is choice: 473.

To convert 4 ounces to milliliters (mL), the following steps can be taken:

Understand the Conversion Factor: 1 fluid ounce (oz) is approximately 29.57 mL. Therefore, 4 oz can be converted to mL using the following calculation: 4 × 29.57 = 118.28

4oz × 29.57mL/oz = 118.28mL.

Convert Cups to Ounces: 1 cup is equal to 8 fluid ounces.

Therefore, 1 cup is 8 × 29.57= 236.56

8oz × 29.57mL/oz = 236.56mL.

So, 1 cup is equal to 236.56 mL. The correct answer is 473 mL (2 cups)