Morphologic changes in the pulmonary arteries after percutaneous balloon angioplasty for pulmonary arterial stenosis

B. S. Edwards, R. V. Lucas, J. E. Lock, J. E. Edwards

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

The pathologic appearance of pulmonary arteries subjected to balloon dilation was studied in four subjects with stenosis of pulmonary arteries. Nine vessels were dilated. Successful dilation in seven vessels was accompanied by intimal disruption and tearing of the media. In one vessel, at the site of a previous surgical procedure, dilation could not be accomplished. Histologically, this vessel was encased by reactive fibrous tissue, which may have precluded successful dilation. In one case, simultaneous rupture of the dilating balloon and the left pulmonary artery occurred. Morphologic examination could not adequately explain the cause of vessel rupture. Among the six vessels successfully dilated and studied 4 to 14 months after the dilation, the postdilation luminal diameter had been maintained. Tears in the intima and media as seen histologically had been filled in by scar tissue. In one artery a dilated segment distal to a residual obstruction revealed marked intimal proliferation.

Original languageEnglish (US)
Pages (from-to)195-201
Number of pages7
JournalCirculation
Volume71
Issue number2
DOIs
StatePublished - 1985

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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