FACTORS INFLUENCING RESULT OF PBPV
AND LONG-TIME FOLLOW-UP
Xia
W, Yang XJ, Wang YW, Zhao CF, et al
Qilu
Hospital of Shandong University, Jinan, China
Objective: To discuss the influencing factors of percutaneous balloon
pulmonary valvuloplasty (PBPV) and the changes of cardiac morphology after
PBPV.
Methods:
Multiple linear regression was adopted to studying peak gradient,
balloon-anulus ratio(BAR), pulmonary orifice area and time of inflation
before and after PBPV. T test was adopted to studying diameter of right
ventricular (RV), thickness of RV and Rv1 of EKG before and follow-up. F
test was applied to determine peak gradient of before, after PBPV and
follow-up.
Result:
82 patients (age between 10months and 28 years, mean 8.25±0.62). There was
a resultant reduction in the peak to peak gradient from 12.34±0.73 kPa to
4.79±0.36 kPa (p<0.001). Clinical and Doppler follow-up of 87±26.3 (38
to 126) months after PBPV was obtained in 42 patients and a further
decrease in the gradient was noted, to 3.73±0.42 kPa (p＜0.001). Diameter of RV, thickness of RV and Rv1 of EKG have
gotten good changes(p＜0.05). Obtained regression equation.
A=13.46+0.3208X-6.9626Y-0.7535Z (A resdue gradient after PBPV; X peak
gradient before PBPV; Y balloon-anulus ratio; Z pulmonary orifice area.),
R2=0.6506.
Conclusion: Patient’s condition of pulmonary valve stenosis(PVS) is key
fact influencing result of PBPV; proper BAR is a preparative condition; the
results of late follow-up of PBPV are excellent. Cardiac good changes in
morphology after PBPV have acquired in low-age children more than high-age
patients. It is suggested that PVS had been diagnosed, the patient should
be treated with PBPV at once.