Final answer:
DVT usually presents with leg swelling, pain, and redness while arterial occlusion causes severe pain and paleness, with PE being a risk for DVT and tissue damage for arterial occlusion. Heart failure can increase DVT risk due to blood pooling.
Step-by-step explanation:
The presentation of deep vein thrombosis (DVT) is different from that of arterial occlusion in several ways. DVT typically presents with symptoms such as swelling, pain, redness, and warmth in the affected leg, due to a blood clot in a deep vein. In contrast, arterial occlusion, which may be a result of atherosclerotic coronary arteries, can lead to ischemia and hypoxia, and presents with symptoms like severe pain, paleness, and coldness of the affected limb, along with possible loss of pulse. While DVT poses a risk of pulmonary embolism (PE) if the blood clot breaks off and travels to the lungs, arterial occlusion can result in tissue damage or necrosis if blood flow is not restored. Heart failure is a condition that increases the risk of DVT because reduced cardiac output may lead to blood pooling and clot formation, especially in situations with prolonged immobility like long flights.