Which assessment finding is a hallmark of deep vein thrombosis (DVT)?

The hallmark assessment finding of deep vein thrombosis (DVT) is warmth and redness in the affected leg. This occurs due to inflammation and increased blood flow in the area where the clot is located. When a thrombus forms in a deep vein, it can lead to localized swelling and may cause the skin overlying the affected area to become reddened and warm to the touch.

These signs are part of the body's inflammatory response to the clot, which prompts vasodilation and increased perfusion to the area. DVT can also cause pain, particularly when the affected leg is moved or pressed upon. The presence of warmth and redness is significant as it indicates potential venous congestion and a need for further evaluation to prevent complications like pulmonary embolism.

Other findings, such as coldness in the affected limb, would typically suggest other conditions, such as arterial occlusion, and no changes in skin color would not indicate the inflammatory activity associated with DVT. An increased heart rate may occur as a response to pain or distress but is not a specific indicator of DVT itself. Thus, the combination of warmth and redness serves as clear indicators of DVT, making this the correct assessment finding.