Balloon dilatation of heart valves.

Balloon dilatation of porcine bioprosthetic valves in the pulmonary position.

Balloon dilatation (BD) of bioprosthetic valves was investigated in vivo and in vitro. Four children with stenotic bioprosthetic porcine valves in the pulmonary position underwent BD of the valve 10 to 24 months after its insertion. Average valve gradient was reduced from 47.5 to 27 mm Hg. Obstruction at the conduit-branch pulmonary artery connection became apparent after dilatation of the valv...

Balloon dilatation in congenital heart disease.

Complete heart block after balloon dilatation for congenital pulmonary stenosis.

Permanent complete heart block developed in a five year old child during balloon dilatation for pulmonary valve stenosis. Damage to the atrioventricular node by pressure from the inflated balloon may have caused the conduction defect.

Percutaneous balloon valve dilatation.

opting out would negate much of the enterprise. The public must be told repeatedly about the likely consequences of the proposals, and the BMA council has launched this exercise. And negotiation must take place-and on equal terms, with flexibility and without the duress of a short timetable which owes more to political expediency than to the issues at stake. In the negotiations the BMA and the ...

Visibility of Balloon Dilatation Catheters

In this study, an easy to use measurement method was developed to quantify the balloon dilatation catheters visibility, thus making them comparable. The visibility of the distal and proximal markers and the balloon (average values of the markers) was determined for fourteen balloons of the same type and material, but different lengths and diameters. Repeatability of these values was tested by o...