While examining the knee of a patient, the nurse places the patient in the supine position and uses firm pressure to stroke the medial aspect of the knee upward while applying pressure to the lateral side and observing the medial side
The nurse is utilizing the _____________ diagnostic test to assess this patient. 1. Bulge sign
2. Balloon sign
3. Ballottement
4. Tinel's sign
Bulge sign
Rationale: The bulge sign is used to detect fluid in the knee. After stroking the medial aspect of the knee upward to displace the fluid, a hand is placed on the lateral side of the knee while looking for a bulge of fluid in the hollow area medial to the patella. The balloon sign is done by placing the thumb and index finder of one hand on each side of the patella while the other hand compresses the suprapatellar pouch against the femur in efforts to feel for fluid. The ballottement test is used to assess for fluid in the suprapatellar pouch and is done by pressing against the sides of the patella with the thumb and index finder of one hand while pushing the patella against the femur with the opposite hand. While pressing on the sides of the patella, fluid is moved into the suprapatellar pouch and then while pushing the patella against the femur, the fluid returns to the pouch and a wave can be felt. Tinel's sign is used to help diagnose carpal tunnel syndrome.
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