title: Coronary dissection resulting from angioplasty with slow oscillating vs. rapid inflation and slow vs. rapid deflation.
abstract: To determine if slow inflation or slow deflation (compared to standard rapid inflation/deflation) would minimize coronary arterial dissection, we randomized 162 lesions from 136 patients undergoing coronary angioplasty with polyolefin copolymer balloons to slow oscillating (1 atmosphere/20 sec) vs. rapid (over 30 sec) inflation and slow (over 15 sec) vs. rapid deflation. The incidence of any dissection was nearly identical in the four inflation/deflation groups. The incidence of severe dissection, however, was significantly higher for the slow inflation/slow deflation group compared to the other three groups (38% vs. 15%, P = .024). For angioplasty performed with polyolefin copolymer balloons, slow deflation combined with slow oscillating inflation is associated with more frequent severe dissections.
mesh_terms: D000328:Adult; D000368:Aged; D000784:Aortic Dissection / Q000000981:diagnostic imaging / Q000209:etiology*; D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation*; D001274:Atmospheric Pressure; D003323:Coronary Aneurysm / Q000000981:diagnostic imaging / Q000209:etiology*; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D017211:Treatment Failure; D016896:Treatment Outcome