Could elevated platelet-lymphocyte ratio predict left ventricular systolic dysfunction in patients with non-ST elevated acute coronary syndrome?

Adem Bekler, Emine Gazi, Mustafa Yılmaz, Ahmet Temiz, Burak Altun, Ahmet Barutçu, Tezcan Peker
Anatolian Journal of Cardiology 2015, 15 (5): 385-90

OBJECTIVE: The prognostic value of a high platelet-lymphocyte ratio (PLR) has been reported in patients with non-ST elevated myocardial infarction (NSTEMI) and different oncologic disorders. We aimed to evaluate the predictive value of the PLR for left ventricular systolic dysfunction (LVSD) in patients with non-ST elevated acute coronary syndrome (NST-ACS).

METHODS: A total of 220 patients with NST-ACS were included in the study. The study population was divided into tertiles based on admission PLR values. High (n=73) and low PLR (n=147) groups were defined as patients having values in the third tertile (>135.6) and lower 2 tertiles (≤ 135.6), respectively. Left ventricular dysfunction was defined as ejection fraction ≤ 40%, and related variables were evaluated by backward conditional binary logistic regression analysis.

RESULTS: The patients in the high PLR group were older (p<0.001) and had a higher rate of previous myocardial infarction and NSTEMI (p=0.046, p=0.013, respectively). There were significantly more coronary arteries narrowed (p=0.001) and lower left ventricular ejection fraction (p<0.001) in the high PLR group. Baseline platelet levels were significantly higher (p<0.001) and triglyceride and lymphocyte levels were significantly lower (p=0.009 and p<0.001, respectively) in the high PLR group. PLR >135.6 was found to be an independent predictor of systolic dysfunction in the multivariate analyses (β: 0.306, 95% confidence interval: 0.151-0.619; p=0.001).

CONCLUSION: A high PLR is a strong and independent predictor for LVSD in patients with NST-ACS.

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