Which of the following would ruin an aseptic environment in the operating room?

The use of powdered gloves can compromise an aseptic environment in the operating room for several reasons. Powders, often made from cornstarch or other materials, can become airborne and create a high risk of contamination by introducing pathogens or particulate matter into the sterile field. This airborne contamination can disrupt the carefully maintained sterility necessary for surgical procedures, potentially leading to infections or complications for patients.

In contrast, the other options listed provide support for maintaining aseptic conditions. Millipore filters are designed to remove contaminants, rinsing instruments with saline can help keep them clean without introducing unnecessary materials, and lint-free drapes help to prevent fibers and dust from settling in the sterile environment. Thus, these practices are beneficial to preserving the aseptic conditions required for safe surgical operations.