9、肺通气灌注显像结果提示诊断肺血栓栓塞症（pulmonary thromboembolism, PTE）为高度可能性，那么诊断PTE的准确率大于80%。

When healthy pregnant women suddenly appear cyanosis, dyspnea and shock during delivery, the first consideration should be given to( ) A: Anaphylactic shock B: Amniotic fluid embolism C: Air embolism D: Thromboembolism E: Acute hemolysis caused by blood group incompatibility