Journals / Turkish Journal of Hematology / 2016 / Cilt: 33 - Sayı: 2

D-index: A New Scoring System in Febrile Neutropenic Patients for Predicting Invasive Fungal Infections

D-index: Febril Nötropenik Hastalarda İnvazif Mantar Enfeksiyonlarının Tanımlanmasında Yeni Bir Skorlama Sistemi

Pages
102–106
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: The D-index and especially the c-D-index could be useful tools with high negative predictive value to exclude as well as to predict IFIs in the management of neutropenic patients

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Neutropenia is a critical risk factor for invasive fungal infections (IFIs).
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Key Findings & Data:We retrospectively performed this study to assess the performance of the D-index, a new test that combines both the duration and the severity of neutropenia, in predicting IFIs among patients with acute myelogenous leukemia.
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Conclusion & Impact:Conclusion: The D-index and especially the c-D-index could be useful tools with high negative predictive value to exclude as well as to predict IFIs in the management of neutropenic patients
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Neutropenia is a critical risk factor for invasive fungal infections (IFIs). We retrospectively performed this study to assess the performance of the D-index, a new test that combines both the duration and the severity of neutropenia, in predicting IFIs among patients with acute myelogenous leukemia. Materials and Methods: Fifteen patients with IFIs and 28 patients who did not develop IFIs were enrolled in the study. The D-index was defined as the area over the neutrophil curve, whereas the cumulativeD-index (c-D-index) was the area over the neutrophil curve from the start of neutropenia until the first clinical manifestation of IFI. Results: The D-index and the c-D-index tended to be significantly higher in patients with IFIs, with medians of 10,150 (range: 400022,000) and 5300 (range: 2300-22,200), respectively (p=0.037 and p=0.003, respectively). The receiver operating characteristic analyses showed that there was a cutoff point of 3875 for the D-index in predicting IFI; the sensitivity, specificity, and positive and negative predictive values were 100%, 67.9%, 35.4%, and 100%, respectively. There was also a cutoff point of 4225 for the c-D-index in predicting IFI; the sensitivity, specificity, and positive and negative predictive values for the c-D-index were 93.3%, 71.4%, 36.6%, and 98.4%. Conclusion: The D-index and especially the c-D-index could be useful tools with high negative predictive value to exclude as well as to predict IFIs in the management of neutropenic patients

Özet

Amaç: İnvaziv fungal enfeksiyonların (İFE) gelişiminde nötropeni önemli bir risk faktörüdür. Biz bu çalışmayı, akut miyeloid lösemi olup, İFE gelişen hastalarda, nötropeni süresini ve sayısını birlikte değerlendiren yeni bir test olan D-indeks'in performansını ölçmek için geriye dönük olarak yaptık.Gereç ve Yöntemler: Çalışmaya 50 tane İFE gelişen hasta, 28 tane İFE gelişmeyen hasta alındı. D-indeks nötrofil eğrisinin üzerinde kalan alan olarak, kümülatif-D-indeks (k-D-indeks) ise, nötropeninin ilk başladığı günden İFE'nin belirtilerinin başladığı ilk güne kadar çizilen nötrofil eğrisinin üzerinde kalan alan olarak belirlendi.Bulgular: D-indeks ve k-D-indeks İFE gelişen hastalarda yüksek olma eğilimindedir. D-indeks ve k-D-indeks için değerler ortalama 10,150 (aralık: 4000-22,000) ve 5300 (aralık: 2300-22,200) olup, sırası ile p=0,037 ve p=0,003 saptandı. Yapılan analizlerde D-indeks için eşik değerin 3875 olup, duyarlılık, özgüllük, pozitif ve negatif prediktif değerleri sırası ile %100, %67,9, %35,4 ve %100 saptandı. k-D-index için eşik değer 4225 olup, duyarlılık, özgüllük, pozitif ve negatif prediktif değeri sırası ile %93,3, %71,4, %36,6 ve %98,4 saptandı.Sonuç: D-indeks ve özellikle k-D-indeks nötropenik hastaları günlük değerlendirmede kullanılabilecek bir testtir. Negatif prediktif değerinin yüksek olması nedeni ile İFE olan hastaları erken yakalamanın yanı sıra, İFE'yi dışlamak için de etkili bulunmuştur

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Cite This Article

YILMAZ, G., COŞKUN, B., ELHAN, A., AZAP, A., AKAN, H. (2016). D-index: A New Scoring System in Febrile Neutropenic Patients for Predicting Invasive Fungal Infections. Turkish Journal of Hematology, Cilt: 33 - Sayı: 2, 102–106. https://ajindex.com/articles/412470

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