开口面积指数
Opening area index
以上为机器翻译结果，长、整句建议使用 人工翻译 。
目前认为术后经胸超声测得的瓣膜有效开口面积指数是唯一可准确描述该现象的指标。
Currently the indexed effective orifice area measured by postoperative transthoracic echocardiography is considered the only appropriate parameter which can accurately describe the mismatch.
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