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