Lipoprotein(a) and Coronary Calcification: Prognostic Implications in Rotational Atherectomy Patients

Yaolin Chen1,2,3, Wei Gao2,3,4, Yinman Wang1,2,3,4

  • 1Department of Cardiology, Zhongshan Hospital, Fudan University (Xiamen Branch), Xiamen, China.

Insights

Elevated Lipoprotein(a) [Lp(a)] levels (≥50 mg/dL) are linked to major adverse cardiac events (MACE) in patients undergoing rotational atherectomy. Markedly elevated Lp(a) (≥68.3 mg/dL) also predicts cardiovascular death, particularly in smokers and those with comorbidities.

Area of Science:

  • Cardiology
  • Vascular Biology
  • Interventional Cardiology

Background:

  • Elevated Lipoprotein(a) [Lp(a)] is a known risk factor for major adverse cardiac events (MACE).
  • The prognostic role of Lp(a) in patients with severe coronary calcifications undergoing rotational atherectomy (RA) is not well-defined.
  • This study investigates the association between Lp(a) levels and clinical outcomes post-RA in this specific patient cohort.

Purpose of the Study:

  • To determine the prognostic value of Lipoprotein(a) [Lp(a)] in patients with severe coronary calcifications after rotational atherectomy (RA).
  • To assess the relationship between Lp(a) levels and the risk of major adverse cardiac events (MACE) and cardiovascular death (CVD).

Main Methods:

  • Retrospective analysis of data from 494 patients who underwent RA.
  • Stratification of Lp(a) levels into <50 mg/dL and ≥50 mg/dL categories.
  • Evaluation of MACE and CVD as primary outcomes, with survival analysis and Cox regression.

Main Results:

  • Patients with Lp(a) ≥50 mg/dL showed a significantly higher incidence of MACE (log-rank p=0.006).
  • An optimal threshold of 68.3 mg/dL for CVD was identified, with Lp(a) ≥68.3 mg/dL associated with increased CVD risk (log-rank p=0.02).
  • Lp(a) was an independent risk factor for MACE, especially in smokers and patients with comorbidities.

Conclusions:

  • Lp(a) ≥50 mg/dL is independently associated with MACE in patients with severe coronary calcification undergoing RA.
  • Markedly elevated Lp(a) levels (≥68.3 mg/dL) are associated with cardiovascular death.
  • Lp(a) identifies a higher MACE risk subgroup, including smokers and those with comorbidities.
Abstract

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