The rates of platelet aggregation ( PAG ) in the immediate postoperative ASD/VSD occlusion were significantly higher than those in the preoperative ASD/VSD occlusion ( adenosine diphosphate -LSB- ADP -RSB- - induced PAG : @ % @ % vs. @ % @ % , p < @ ; arachidonic acid -LSB- AA -RSB- - induced PAG : @ % @ % vs. @ % @ % , p < @ , respectively ) .