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本文观察了体外反搏（ＥＣＰ）对右房血血小板功能的影响。结果显示：①血小板内５－羟色胺（５－ＨＴ）在反搏过程中有下降趋势，但血浆５－ＨＴ在ＥＣＰ过程中则变化不明显；②循环血小板聚集比（ＣＰＡＲ）在ＥＣＰ３０分钟有所升高，６０分钟达高峰，停机后１５分钟恢复至ＥＣＰ前水平；③循环血小板计数（ＣＰＣ）在ＥＣＰ３０分钟时开始升高，６０分钟时达高峰，停机后１５分钟已有所下降，但尚未恢复至ＥＣＰ前水平。提示ＥＣＰ虽能使血小板部分激活，但却能抑制其聚集。
This article examines the effect of extracorporeal counterpulsation (ECP) on right atrial platelet function. The results showed that: (1) Platelet serotonin (5-HT) has a tendency of declining during the counterpulsation process, but plasma 5-HT has no obvious change during the ECP process; ② Circulating platelet aggregation ratio (CPAR) (P <0.05), and reached its peak at 60 minutes and returned to the pre-ECP level 15 minutes after downtime. (3) The circulating platelet count (CPC) began to rise at 30 minutes of ECP and reached a peak at 60 minutes. Return to pre-ECP levels. Tip ECP although platelet activation, but can inhibit its aggregation.