text_1: 本 试验 仅 要求 中度 狭窄 ( 50% ~ 69% ) 患者 有 FFR 测定 值 ( ≤ 0.80 ) 证明 缺血 ; 本 试验 仅 纳入 了 少数 此类 患者 .
  
text_2: evidence of ischemia in the form of an FFR measurement of 0.80 or less was required only in patients with moderate stenosis ( 50 to 69 % ) , and only a small number of such patients were enrolled in the trial .
  