The classic measurement of the pressure of pulmonary artery is by cardiac catheter of rightheart, and the gold standard of PAH is also this method.
肺动脉压力经典的测量方法是通过右心导管检查术，肺动脉高压其诊断的金标准也是有创性右心导管检查法。
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METHODS: Changes in rightheart load in 46 patients with trans-catheter ASD occlusion were detected by echocardio gr aghy before and after the occlusion.