Article

Balloon valvuloplasty and angioplasty in congenital heart disease.

Heart (Impact Factor: 6.02). 10/1985; 54(3):285-9. DOI: 10.1136/hrt.54.3.285
Source: PubMed

ABSTRACT Balloon dilatation valvuloplasty was performed in 16 patients with pulmonary valve stenosis aged 10 days to 17 years. Gradients were reduced in all but two patients and were less than or equal to 20 mm Hg after the procedure in all but these two and one other. Unsatisfactory initial results in these three patients were attributed to the use of too small a balloon in one patient (gradient subsequently abolished at repeat valvuloplasty), to a dysplastic valve in a neonate, and to the fact that there had been a previous surgical valvotomy with scar tissue formation in one patient. The good result was retained in six of seven patients followed up at three to six months. In one the gradient, having been reduced from 60 to 18 mm Hg, had risen to 35 mm Hg. Repeat valvuloplasty was technically impossible in this patient, but in two others residual gradients of 24 and 22 mm Hg were reduced to 4 and 8 mm Hg respectively by repeat valvuloplasty. Balloon dilatation angioplasty was successful in dilating a severe stenosis at the lower limb of an atrial baffle (previous correction of complete transposition) and in dilating supravalvar stenosis of the pulmonary artery resulting from previous banding and debanding. Thus balloon pulmonary valvuloplasty, though still a new technique, appears to be the treatment of choice in patients with typical pulmonary stenosis and thin mobile valves. Patients with dysplastic valves may be less suitable candidates for the procedure. Balloon angioplasty is likely to have other applications, including the treatment of postoperative stenotic lesions.

0 Bookmarks
 · 
188 Views
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Prosthetic heart valves of the Bjork-Shiley Convexo-Concave (BSCC) type have long been used extensively in implants; however, there have been reports of cases where one component of the valves failed, leading to the demise of the patient. This paper presents a new method for noninvasive electromagnetic evaluation for this type of valve, using an eddy current transducer with orthogonal coils. In vitro experiments have shown that discontinuities of outlet strut with depths equal or larger than 0.4mm can be detected with a probability of detection (POD) of 86.4%, and in the case of discontinuities with depth equal or larger than 0.6mm with POD of 97%.
    01/2002;
  • [Show abstract] [Hide abstract]
    ABSTRACT: Prosthetic heart valves of the Bjork-Shiley convexo-concave (BSCC) type have been used extensively in implants; however, there have been reports of cases where one component of the valves failed, leading to the demise of the patient. This paper presents a new method for noninvasive electromagnetic evaluation for this type of valve, using an eddy current transducer with orthogonal coils. In vitro experiments on BSCC prosthetic heart valve replicas have shown that discontinuities of outlet strut with depths equal or larger than 0.4 mm can be detected with a probability of detection (POD) of 86.4%, and in the case of discontinuities with depth equal or larger than 0.6 mm with POD of 97%. Blind tests effectuated on 32 BSCC prosthetic heart valves have shown that, using the proposed method, the tested valves have been correctly classified.
    NDT & E International 07/2009; · 1.72 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Between 1986 and 2003 49 consecutive neonates with severe pulmonary valve stenosis underwent ballonvalvuloplasty (PSVP). Age 1-25 days (median7 days).10 days to 16,8 years (median 86 months) after PSVP the patients were examined for follow up. 71% were treated only by PSVP. In 59% only one PSVP was performed, 12% needed two or more PSVP. 25 % needed surgery. Mortality after PSVP is 4%. 80% were free from further treatment after 1 year, 70% after 2,5 years, 65% after 5 years and 55% after 10 years. Conclusion: PSVP in neonates is the therapy of first choice. In comparison with other centers this study shows equal results. After cardiac surgery a smaller amount of patients needed further treatment, but these group of patients were significantly older. Patients with dysplastic valves, right ventricular hypoplasia and PSVP with too small sized balloons often needed further treatment. Nearly all patients developed pulmonary regurgitation, but the significance for follow up remains uncertain.
    01/2007;

Preview

Download
0 Downloads
Available from