Evaluated Balloon Valvuloplasty in Different Aged Children with Pulmonary Valve Stenosis with Transthoracic Doppler Echocardiography

  • Xiaojuan Ji, Children’s hospital of ChongQing medical university, China
  • Qin Lin, the children’s hospital of ChongQing medical university, China
  • Qijian Yi, the children’s hospital of ChongQing medical university, China
  • Yonghong Bai, the children’s hospital of ChongQing medical university, China
  • Mi Li, the children’s hospital of ChongQing medical university, China

    • Objective: The efficacy of balloon valvuloplasty (BV) in different aged children with pulmonary valve stenosis(PS)has not been fully elucidated with transthoracic doppler echocardiography(TTE).
    Methods: BV was successfully performed in 76 consecutive children. Of these children, group A was consisted with younger than 1-years-old children, group B was composed of 1-5 years-old, the 5-10 years-old was divided into group C, older than 10 years was group D. TTE was used to register the mean systolic transpulmonary Doppler gradient before and 1 day and 1 month after BV. Right ventricular pressure (RVP) recorded during transcatheter intervention was compared to the measurement with echo.
    Results: RVP of group C(91.6±23.93)mmHg was the severe group before BV, but RVP decreased to(25.1±10.08)mmHg after BV(P < 0.05). The pressure gradient across the pulmonary valve were about group A(53.0±29.82)mmHg , group B(38.2±11.78)mmHg , group C(66.7±44.99)mmHg , group D(49.3±27.29)mmHg before BV, accordingly,(22.7±6.64)mmHg, (17.0±5.55)mmHg, (24.1±10.70)mmHg and(19.3±5.33)mmHg 1 day after BV,(19.7±5.60)mmHg, (15.7±4.71)mmHg, (22.2±11.01)mmHg,(20.08±4.73)mmHg 1 month after BV. The measurement with echo were comparable with those by transcatheter intervention(P >0.05).There are about 85.5% children whose pressure gradient across the pulmonary valve less than 20 mmHg 1day after BV, meanwhile, about 93.4% children whose pressure gradient across the pulmonary valve less than 20 mmHg 1month after BV.
    Conclusion: BV was a safe and effective technique for treating different aged children with pulmonary valve stenosis. It was feasible to follow up with TTE.