Assessment of neutrophil / lymphocyte ratio in patients with myocardial bridge

Abstract

Objective: Myocardial bridge (MB) is a congenital anomaly characterized by systolic narrowing of the epicardial coronary arterial segment while traveling in the myocardium. It is a benign entity but previous studies showed that the proximal portion is prone to an enhanced atherosclerosis. Neutrophil/lymphocyte ratio (NLR) is a sensitive marker of systemic inflammation used as a predictor for adverse cardiovascular outcomes in atherosclerotic heart disease. So in this study, we sought to evaluate the association between NLR and myocardial bridging. Methods: A total of 172 patients (mean age: 50.8 &plusmn; 11.5 years, 77.3% men) with either angiographically proven MB or normal coronary arteries were included in the study. For the entire study population, hematologic parameters were measured using an automatic blood counter. Results: The study population consisted of 71 patients with MB (mean age: 51.4 &plusmn; 11.9 years, 80.3% male) and 101 patients with normal coronary arteries (mean age: 50.5 &plusmn; 11.3 years, 75.2% male). There were no significant differences between groups regarding hemoglobin level, platelet count, glucose and creatinine. Compared to the control group, NLR was significantly higher in patients with MB (2.45 &plusmn; 1.19 vs. 1.72 &plusmn; 0.48; p< 0.001). In ROC analysis, NLR > 1.82 predicted myocardial bridge presence with 70% sensitivity and 71% specificity (ROC area under curve: 0.733, 95% CI: 0.654-0.811, p < 0.001). Conclusion: Our study findings demonstrated that MB is associated with elevated NLR, which is used to assess inflammatory status of the body. J Clin Exp Invest 2014; 5 (1): 24-28

Keywords

• Inflammation, neutrophil/lymphocyte ratio, and myocardial bridge

Miyokardiyal kas bandı olan hastalarda nötrofil / lenfosit oranının değerlendirilmesi

Abstract

Amaç: Miyokardiyal kas bandı miyokart içinde seyreden epikardiyal koroner arterlerin sistolde daralması ile seyreden konjenital bir anomalidir. İyi huylu olmasına rağmen önceki çalışmalarda proksimal kesimlerin artmış ateroskleroza eğilimli olduğu gösterilmiştir. Nötrofil/lenfosit oranı (NLO) aterosklerotik kalp hastalıklarında kötü prognozu öngören sistemik enflamasyonun duyarlı bir belirtecidir. Biz bu çalışmada NLO ile miyokardiyal kas bandı arasında bir ilişki var olup olmadığını araştırmayı amaçladık. Metodlar: Anjiyografik olarak tespit edilmiş miyokardiyal kas bandı veya normal koroner arterleri olan 172 hasta (ortalama yaş: 50.8 &plusmn; 11.5 yıl, %77.3 erkek) çalışmaya dahil edildi. Otomatik kan sayacı kullanılarak tüm hastaların hematolojik parametreleri ölçüldü. Bulgular: Çalışma 71 miyokardiyal kas bandı (ortalama yaş: 51,4 &plusmn; 11,9 yıl, %80,3 erkek) ve 101 normal koroner arterleri (ortalama yaş: 50,5 &plusmn; 11,3 yıl, %75.2 erkek) olan hastadan oluşmaktaydı. Hemoglobin, trombosit sayısı, glukoz ve kreatinin açısından gruplar arasında fark saptanmadı. Kontrol grubuna göre miyokardiyal kas bandı grubunda NLO anlamlı olarak daha yüksekti (2,45 &plusmn; 1,19 vs. 1,72 &plusmn; 0,48; p< 0,001). ROC analizinde, NLO > 1,82 miyokardiyal kas bandı varlığını %70 duyarlılık ve %71 özgüllükle öngörmüştür (ROC eğri altında kalan alan: 0.733, 95% güvenlik aralığı: 0.654-0.811, p < 0.001). Sonuç: Çalışmamız miyokardiyal kas bandının vücutta enflamatuar düzeyi gösteren yüksek NLO seviyeleri ile ilişkili olduğunu göstermiştir.

Keywords

• İnflamasyon, nötrofil/lenfosit oranı, miyokardiyal kas bandı

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