Discontinuous flow centrifugation: One venous catheter line is required. Typically, a 300 ml batch of blood is removed at a time and centrifuged to separate plasma from blood cells.

间歇流动离心：需要一根静脉导管。典型地，一次去除300毫升血液，离心使血浆与血细胞分离开来。

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Objective: to study a new catheter method to measure blood flow of the pulmonary circuit.

目的：研究一种新的导管法测定肺循环血流量。

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Compared with a peripheral vessel, a central vein provides more blood flow around the catheter tip, reducing the risk of vein damage.

与周边血管比较，中央静脉提供导管附近更多血流，减少静脉损伤的风险。

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Compared with a peripheral vessel, a central vein provides more blood flow around the catheter tip, reducing the risk of vein damage.

与周边血管比较，中央静脉提供导管附近更多血流，减少静脉损伤的风险。

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