The appropriate test the nurse should perform next to determine the cause of the swelling is the bulge test.
If swelling is detected in the knee, the nurse should perform the bulge test to determine if the swelling is due to an accumulation of fluid or soft-tissue swelling. The bulge test will help to detect small amounts of fluid in the knee. Ballottement is a knee test used to assess for the presence of large amounts of fluid in the knee. McMurray's test is useful to confirm a meniscal tear. Pain or clicking during the test is indicative of a torn meniscus of the knee. Range of motion is not useful in determining the cause of the swelling.
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