Balloon dilatation of right ventricular outflow tract is an effective and safe palliative procedure for the TOF infants with small pulmonary arteries and with hypoxic spells.

• 气球导管扩张右心室出口处，是种有效而且安全的介入性导管治疗手术，对反覆缺氧发作及肺动脉发育不良的法洛氏四合症病婴，具有疗效。