Enfektif endokarditli hastalarda D-dimer düzeyinin sistemik emboliyle ilişkisi

Relationship between D-dimer and systemic embolism in patients with infective endocarditis

Onur OMAYGENÇ, Olcay ÖZVEREN, Ruken Bengi BAKAL, Taylan AKGÜN, Suzan HATİPOĞLU AKPINAR, Nihal ÖZDEMİR, Gökhan KAHVECİ, Süleyman KARAKOYUN

Özet

Amaç: Çalışmanın amacı, enfektif endokarditli (EE) hastalarda plazma D-dimer (DD) düzeylerinin klinik bulgu veren sistemik embolik olayları öngörmedeki değerini araştırmaktır. Çalışma planı: Çalışmaya EE tanısı konulan 42 (ortalama yaş: 45±16, %78i erkek) hasta dahil edildi. Hastaların klinik, laboratuvar ve ekokardiyografik bulguları değerlendirildi. Bulgular: Sistemik emboli olan 13 hastada plazma DD düzeyi, olmayanlara göre daha yüksek tespit edildi (p=0.016). Ayrıca hastalar DD >500 ng/dL ve 500 ng/dL olan grupta klinik emboli oranı daha yüksek saptandı (p=0.036). ROC eğrisi (receiver operating curve) analizinde DD >425 ng/dL değerinde eğri altında kalan alan 0.735 olarak hesaplandı (%95 GA 0.560-0.909, p=0.016). DD >425 ng/dL değeri, %77 duyarlılık ve %62 özgüllükle klinik emboliyi öngörmektedir. Hematokrit (r=-0.31, p=0.045), trombosit (r=-0.40, p=0.009), albümin (r=-0.37, p=0.026) ve globülin (r=0.38, p=0.028) düzeyleri ile DD düzeyi arasında anlamlı korelasyon saptandı. Sonuç: Enfektif endokarditli hastalardan embolik olay gelişenlerde DD seviyeleri yüksek bulundu. Plazma DD düzeylerinin sessiz embolileri öngörmedeki yerini belirlemek için yeni çalışmalara ihtiyaç vardır.

Abstract

Objectives: The aim of this study was to investigate the value of plasma D-dimer (DD) levels for predicting systemic embo- lism in patients with infective endocarditis (IE). Study design: A total of 42 patients (mean age: 46±16 years; 78% males) with IE were included. Clinical, laboratory and echocardiographic findings of the patients were evaluated. Results: Increased plasma DD levels were determined in 13 patients with systemic embolism (p=0.016). Moreover, when patients were divided in two groups as DD >500 ng/dl and DD 500 ng/dl group (p=0.036). Receiver operating characteristics (ROC) curve analysis was performed to detect the best cut-off value of DD in the prediction of systemic embolism. DD >425 ng/dl yielded an area under the curve (AUC) value of 0.735 (95% CI 0.560-0.909, p=0.016). DD >425 ng/dl demonstrated a sensitivity of 77% and specificity of 62% for the prediction of clinical embolism. Hematocrit (r=-0.31, p=0.045), platelet count (r=-0.40, p=0.009), albumin (r=-0.37, p=0.026), and globulin (r=0.38, p=0.028) levels were correlated with DD levels. Conclusion: Plasma DD levels are increased in patients with IE who suffered from clinically significant systemic embolism. Further studies are needed to determine the predictive value of DD levels for clinically silent systemic embolism.