title: Risk factors for restenosis after percutaneous transluminal coronary angioplasty: role of lipoprotein (a).
abstract: To evaluate serum levels of lipoprotein (a) (Lp[a]) as a predictor of restenosis after percutaneous transluminal coronary angioplasty (PTCA), we evaluated 71 patients who underwent elective single-vessel angioplasty. Patients were divided into two groups according to the presence (n = 24 [34%]; group R) or absence (n = 47 [66%]; group N) of restenosis. Serum insulin levels were similar before and after the glucose challenge test in both groups. The median level of serum Lp(a) was 34.9 mg/dl in group R compared with 19.4 mg/dl in group N (p < 0.01). The frequency of the apo E4 allele was 4 (17%) in group R and 4 (9%) in group N (p = NS). The incidence of restenosis was significantly higher in patients with Lp(a) levels > or = 30 mg/dl than in those with Lp(a) levels < 30 mg/dl (65% vs 26%; p < 0.01). Our results indicate that a serum Lp(a) level > or = 30 mg/dl is a risk factor for restenosis.
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D003251:Constriction, Pathologic; D003327:Coronary Disease / Q000097:blood* / Q000000981:diagnostic imaging / Q000601:surgery*; D005260:Female; D006801:Humans; D017270:Lipoprotein(a) / Q000097:blood* / Q000502:physiology; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011446:Prospective Studies; D011859:Radiography; D012307:Risk Factors
chemical_list: D017270:Lipoprotein(a)