A prosthesis for banding the main pulmonary artery, capable of serial dilatation by balloon angioplasty

• Published in: The Journal of thoracic and cardiovascular surgery Vol. 97; no. 3; pp. 421 - 427
• Main Authors: Vince, DJ, Culham, JA
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA AATS/WTSA 01.03.1989; Elsevier
• Subjects: Angioplasty, Balloon; Animals; Biological and medical sciences; Blood Vessel Prosthesis; Cardiology. Vascular system; Congenital heart diseases. Malformations of the aorta, pulmonary vessels and vena cava; Dogs; Heart; Heart Defects, Congenital - surgery; Ligation - methods; Medical sciences; Palliative Care; Pulmonary Artery - pathology; Pulmonary Artery - surgery; Fissipedia; Hooping; Carnivora; Congenital; Prosthesis; Cuffed tube; Instrumentation therapy; Cardiovascular disease; Instrumental dilatation; Experimental study; Pulmonary artery; Percutaneous route; Vertebrata; Mammalia; Sequential; Heart disease; Dog
• ISSN: 0022-5223; 1097-685X
• DOI: 10.1016/s0022-5223(19)34581-7

A prosthesis constructed with a fatigued steel helix encased in a silicone rubber shield was used to band the main pulmonary artery in 10 dogs. After a mean duration of 138 days the banded site was dilated with a 20 mm diameter angioplasty catheter. This dilatation produced a mean increase of 44.3% in the cross-sectional area. A further mean increase of 2.2% in the cross-sectional area was measured 137 days after the dilatation. In five uncomplicated experiments a second dilatation was performed with a 23 mm diameter angioplasty catheter after a mean interval of 140 days. The second dilatation produced a further 21% increase in the cross-sectional area. In the five experiments in which two dilatations were performed, there was a total increase in the mean cross-sectional area of 94% produced 273 days after banding. This prosthesis maintains banding of the main pulmonary artery and can be serially dilated by balloon angioplasty.