Page 372 - 先天性心脏病的导管术：从婴幼儿期到成人期

354 先天性心脏病的导管术：从婴幼儿期到成人期

超声心动图可以评估早期或晚期导管内阻塞，以区分支架内增生或支架未覆盖导
管引起的阻塞。如果超声发现穿过支架导管的“纯”血流速度小于 2.5 m/s，这与柔顺
性较差的动脉导管有关，而与明显的导管阻塞无关。
如果在经导管手术后几天内获得的临床、血流动力学、超声心动图和实验室（脑

利钠肽 [BNP] 值）数据稳定，则可出院，至少在出院后的 10-14 d 可能不会出现问题，
后期患者则需要在门诊定期复查。

29.14 随访

导管支架置入术是一种姑息方法。如果有任何原因导致导管阻塞，则完全导管依
赖体循环的患者具有很高的死亡风险。因此，在进行下一步治疗前，必须对所有此类
患者进行密切的随访。

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