Final answer:
The proper order on the back table for a surgeon and first assistant's sterile attire, with the assistant arriving first, is XL gown, 7-1/2 glove, 7 glove, L gown, 7 glove, 6-1/2 glove as per their wearing preferences.
Step-by-step explanation:
The proper order to place the sterile attire on the back table for a surgeon and an assistant who double-glove and require different sizes of gowns and gloves should take into account the order in which the operating room team will be donning their sterile attire. As the first assistant will be arriving before the surgeon, their gown and gloves should be laid out first, followed by the surgeon's. Therefore, the correct order would be option B: XL gown, 7-1/2 glove, 7 glove, L gown, 7 glove, 6-1/2 glove.
It is important to ensure that the sterile attire is organized in such a way that it corresponds to the sequence of individuals getting ready, which in this case, starts with the first assistant. This approach is critical for maintaining sterile technique and preventing contamination, ultimately contributing to better patient health outcomes by reducing the risk of surgical site infections (SSIs).