Balloon pulmonary valvoplasty: factors determining short- and long-term results

Effect of the Balloon-Anulus Ratio on the Intermediate and Follow-Up Results of Pulmonary Balloon Valvuloplasty

“…Moreover, the mean absolute pressures as Balloon-Anulus Ratio for Pulmonary Valvuloplasty well as their fractional changes were found to be signifi cantly improved at the follow-up assessment as compared with the immediate results. Similar improvement during follow-up has also been reported by Ray et al [9] and Masura et al [11] and has been attributed to infundibular spasm provoked by the procedure. Ben-Shachar et al [21 ] have described a 14-month-old boy whose RVSP in creased from 105 to 214 mm Hg following a successful balloon valvuloplasty.…”

“…Their results were based on 34 valvuloplasties in whom the balloon size exceeded the anulus diameter by up to 58% (mean 22%). Ray et al [9] also did not find the balloon size to be pre dictive of the period immediately following dilatation and those during follow-up. [4,5,10] has reported the effect of the BAR on both immediate and intermediate-term outcome of PBV.…”

Mid-Term Results of Balloon Pulmonary Valvuloplasty in Children at Queen Alia Heart Institute

“…(21) Although the majority of our patients with pulmonary valve stenosis were asymptomatic, our rationale for taking our patients for BPV when their peak to peak maximum PG≥5OmmHg in order to prevent and relieve the symptoms, to prevent the secondary changes in the right ventricle and the pulmonary artery and to prevent the progression into more severe degrees of obstruction. (6,22) We noticed also that re-stenosis rate was higher in patients who were below two years of age and actually these cases had their peak to peak PG before BPV significantly higher than those above two years (P=0.001), this also was noticed by Ray et al, (27) and McCrindle et al (28) The subvalvular stenosis of the right ventricle outflow tract was noticed immediately post BPV in 13.6% of patients. These patients received propranolol for 2-3 months period with obvious regression of the subpulmonic obstruction.…”

Surgical treatment of severe pulmonic stenosis under cardiopulmonary bypass in small dogs

“…This may be because the pulmonary valve was modified and palliated directly under visual observation. Incomplete reduction of obstruction with poor results has been reported to be due to residual gradients at the infundibular level (Fontes and others 1988, Ray and others 1993, Gupta and others 2001). In our study, cases 5 and 8 continued to show a moderate residual stenosis, whereas cases 1 and 2 showed severe stenosis.…”