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Int J Cardiol. 2013 Jul 31;167(2):458-63. doi: 10.1016/j.ijcard.2012.01.009. Epub 2012 Feb 2.

The prognostic value of very low admission LDL-cholesterol levels in ST-segment elevation myocardial infarction compared in statin-pretreated and statin-naive patients undergoing primary percutaneous coronary intervention.

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1
ayhanerkol@yahoo.com

Abstract

BACKGROUND:

Some recent trials reported that, low admission low-density lipoprotein-cholesterol (LDL-C) levels were associated with increased mortality in patients with acute coronary syndromes. We aimed to compare the effect of very low admission LDL-C levels on prognosis in statin-pretreated and statin-naive patients with acute ST-segment elevation myocardial infarction (STEMI) undergoing primary angioplasty.

METHODS:

The study population consisted of 1808 patients with acute STEMIs who underwent primary angioplasty. The patients were categorized into four groups as: statin-pretreated/LDL-C<70 mg/dl (n=128), statin-pretreated/LDL-C ≥ 70 mg/dl (n=290), statin-naive/LDL-C <70 mg/dl (n=146), statin-naive/LDL-C ≥ 70 mg/dl (n=1244). The median follow-up was 40 months.

RESULTS:

The incidences of diabetes mellitus, hypertension, renal insufficiency, anemia, cardiogenic shock on presentation and the mean age were significantly higher in the statin-naive/LDL-C < 70 mg/dl group. In-hospital (2.3% vs 2.4% vs 12.3% vs 3.9%, respectively p<0.001) and long-term mortalities (6.3% vs 7.3% vs 25.9% vs 11.3% respectively, p<0.001) were significantly lower in the "statin-pretreated/LDL-C<70" group. Statin pretreatment was independently predicting lower long-term mortality irrespective of LDL-C level [for the subgroup with LDL-C < 70 mg/dl, Hazard Ratio (HR) 0.24, 95% CI 0.10-0.59, p=0.013; for the subgroup with LDL-C ≥ 70 mg/dl, HR 0.31, 95% CI 0.14-0.83, p=0.022]. LDL-C levels on admission had no independent predictive role on long-term mortality.

CONCLUSIONS:

Statin induced low LDL-C levels on admission are associated with better short- and long-term outcomes in patients with STEMI and independently predict lower long-term mortality. However, spontaneously low admission LDL-C levels were associated with increased short- and long-term mortalities.

PMID:
22305817
DOI:
10.1016/j.ijcard.2012.01.009
[Indexed for MEDLINE]
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