How effective is beta glucan test in early diagnosis of invasive fungal infection in patient with hematologic malignancy?

Yıl 2015, Cilt: 48 Sayı: 3, 102 - 107, 26.12.2015

Mehmet Kürşat Keskin Fahir Özkalemkaş Nizameddin Koca Vildan Özkocaman Beyza Ener Rıdvan Ali Tülay Özçelik Hakan Yorulmaz Ahmet Tunalı

https://doi.org/10.5505/aot.2015.49091

Öz

INTRODUCTION: Invasive fungal infections (IFI) are commonly seen in immunosuppressive patients. Early diagnosis is key to optimizing antifungal treatment success. Betaglucan (BG) assay can detect most of the fungal pathogens except mucormycosis and Cryptococcus. In this study we aimed to evaluate the value of BG as a diagnostic tool in patients with hematological malignancy and IFI.METHODS: Forty-six hematological malignancy patients under induction and consolidation chemotherapy that expected to have neutropenia for more than 14 days with no clinical and radiological signs of IFI are included in this study. Blood Galactomannan (GM) and BG levels were measured 2 times in a week during the hospitalization period. Method A (proven + probable groups vs non IFI) and Method B (proven + probable + possible groups vs. non IFI) variables were determined to assess the sensitivity, specifity and predictive values.RESULTS: In method A; BG test's sensitivity, specifity, positive predictive value (PPV), negative predictive value (NPV) was determined as 68.75%, 84.1%, 52.4%, 91.4% respectively. In method B (proven + probable + possible groups vs. non IFI) BG test sensitivity, specifity, PPV, NPV was determined as 60%, 88.9%, 71.4%, and 82.8% respectively.DISCUSSION AND CONCLUSION: Depending on our data and present literature; we conclude that BG and GM is a non-invasive contributory test for the diagnosis of IFI The current treatment of the symptomatic extremity

Anahtar Kelimeler

Invasive Fungal Infections, Beta glucan, galactomannan, sensitivity, specifity

Hematolojik kanserli hastalarda Invaziv fungal enfeksiyonun erken tanısındabeta glukan testi ne kadar etkilidir?

Öz

GİRİŞ ve AMAÇ: İnvaziv fungal enfeksiyonlar (IFE) sıklıkla immün süpresif hastalarda görülmektedir. Antifungal tedavi başarısı için erken tanı anahtar öneme sahiptir. Betaglucan (BG) testi mucormikoz ve kriptokoklar dışında birçok mantar patojeni tespit edebilir. Bu çalışmada betaglucan düzeyinin hematolojik kanserli ve IFE'li hastalarda tanısal bir araç olarak değerlendirmeyi amaçladık.YÖNTEM ve GEREÇLER: Indüksiyon veya konsolidasyon tedavisi alan, klinik ve radyolojik IFE bulguları olmayan 14 günden uzun süreli nötropeni beklentisi olan 46 hasta çalışmaya dahil edildi. Hastanede yattıkları süre içerisinde haftada 2 defa kan galaktmannan (GM) ve BG düzeyleri ölçüldü. Sensitivite, spesifite ve öngörğlen değerlerin yorumlanması için Metod A (kanıtlanmış + muhtemel grup vs non-IFE) ve Metod B (kanıtlanmış + muhtemel +olası grup vs non-IFE ) değişkenleri tanımlandı.BULGULAR: Metod A'da; BG testinin sensitivitesi, spesifitesi, pozitif öngörülen değer (PÖD), Negatif öngörülen değer (NÖD) sırasıyla %68.75, %84.1, %52.4, %91.4 olarak tespit edildi. Metod B'de; BG testinin sensitivitesi, spesifitesi, PÖD, NÖD sırasıyla %60, %88.9, %71.4, %82.8 olarak tespit edildi.Hiçbir hastada ameliyat içi istenmeyen durum olmadı. Cerrahi gruptaki 3 hastaya embolizasyon uygulandı. Postoperatif takiplerde 1 hastada enfeksiyon, 2 hastada nüks saptandı.TARTIŞMA ve SONUÇ: Bizim verilerimiz ve mevcut literature dayanarak BG ve GM'nin IFE tanısına katkı sağlayan non-invaziv test olduğu sonucuna vardık.

Anahtar Kelimeler

İnvaziv fungal enfeksiyonlar, beta glukan, galaktomannan, sensitivite, spesifite

Kaynakça

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