BackgroundSevere polytrauma is a high-energy trauma, has complicated associated injuries with massive hemorrhage, and always leads to high mortality and the rate of disability.

背景严重多发伤是一种高能创伤，由于创伤重，合并伤复杂，出血量多，常导致高死亡率和高致残率；

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BackgroundSevere polytrauma is a high-energy trauma, has complicated associated injuries with massive hemorrhage, and always leads to high mortality and the rate of disability.

背景严重多发伤是一种高能创伤，由于创伤重，合并伤复杂，出血量多，常导致高死亡率和高致残率；

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