Objective: To date, there is no consensus on which inflammatory biomarker is the best prognostic indicator and most clinically valuable in patients with recurrence after internal urethrotomy (IU). In this study our aim was to compare the ability of neutrophil/lymphocyte ratio (NLR), platelet/lymphocyte ratio (PLR) and systemic inflammatory index (SII) to predict recurrence after IU. Material and Methods: The data of 230 patients in the study were scanned, and age, stricture length, etiology, time of recurrence, NLR, PLR and SII values were recorded. The primary endpoint of the study was the ability of NLR, PLR and SII to predict recurrence and the secondary endpoint was to determine whether these three parameters were superior to each other in predicting early recurrence. Results: Our results showed that the optimal cut-off values of the NLR, the PLR and the SII for the prediction of recurrence were 1.4, 101 and 350, respectively. Using these cut-off values, SII, NLR and PLR predicted recurrence with a sensitivity of 89.2%, 75.5% and 54.9% respectively. While the positive predictive values and negative predictive values for SII were 65.3% and 89.7% respectively, these parameters were 70.4 and 80.2, 51.9 and 62.3 for NLR and PLR respectively. Conclusion: The SII is superior to the other hematological markers of inflammation.
Keywords: Urethral stricture; recurrence; inflammation; neutrophils; platelet count
Amaç: Bugüne kadar internal üretrotomi (İÜ) sonrası nüks gelişen hastalarda hangi inflamatuar biyobelirtecin en iyi prognostik gösterge olduğu ve klinik olarak en değerli olduğu konusunda bir fikir birliği yoktur. Bu çalışmada amacımız, nötrofil/lenfosit oranı (NLR), trombosit/lenfosit oranı (PLR) ve sistemik inflamatuar indeksin (Sİİ) İÜ sonrası nüksü öngörme başarısını karşılaştırmaktır. Gereç ve Yöntemler: Çalışmaya alınan 230 hastanın verileri taranarak yaş, striktür uzunluğu, etiyoloji, nüks zamanı, NLR, PLR ve Sİİ değerleri kaydedildi. Çalışmanın birincil sonlanım noktası NLR, PLR ve Sİİ'nin nüksü öngörebilme başarısı, ikincil sonlanım noktası ise bu üç parametrenin erken nüksü öngörmede birbirlerine üstünlüklerinin olup olmadığının belirlenmesiydi. Bulgular: Sonuçlarımız nüksü öngörmek için NLR, PLR ve Sİİ'nın optimal kesim değerlerinin sırasıyla 1,4, 101 ve 350 olduğunu göstermiştir. Bu kesim değerleri kullanıldığında, Sİİ, NLR ve PLR nüksü sırasıyla %89,2, %75,5 ve %54,9 duyarlılıkla öngörmüştür. Sİİ için pozitif prediktif değerler ve negatif prediktif değerler sırasıyla %65,3 ve %89,7 iken, bu parametreler NLR ve PLR için sırasıyla 70,4 ve 80,2, 51,9 ve 62,3 idi. Sonuç: Sİİ, inflamasyonun diğer hematolojik belirteçlerinden daha üstündür.
Anahtar Kelimeler: Üretra darlığı; yineleme; inflamasyon; nötrofiller; trombosit sayma
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