Conclusion The percutaneous balloon dilatation of the stenotic right outflow tract is one of the effective palliative therapies for infants with tetralogy of Fallot.

• 结论经皮球囊导管扩张狭窄的右心室流出口，是对法洛四联症患儿合并缺氧发作的有效姑息疗法之一。