Journals / Mikrobiyoloji Bülteni / 2008 / Cilt: 42 - Sayı: 1

Investigation of the effect of constructions in hospital environment on the crucial unıts for immunocompromised patiends and the development of opportunistic mold infections

Hastanede yapılan inşaat çalışmalarının immün sistemi baskılanmış hastaların bulunduğu çevre ve fırsatçı küf enfeksiyonları gelişimi üzerindeki etkisinin araştırılması

Pages
83–93
DOI
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AI Summary & Key Takeaways

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

This study has emphasized the importance of examination of mold flora of indoor air and clinical samples of high risk group patients intermittantly, in order to prevent opportunistic mold infections in crucial units especially during hospital constructions.

📌 3 Key Takeaways

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Objective & Hypothesis:This study was planned to determine the effect of building constructions in and around our hospital, on the development of opportunistic mold infections in immunocompromised patients hospitalized in bone marrow and kidney transplantation units and haematology and oncology units.
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Key Findings & Data:Samples were collected from high risk units by an air sampler (Air Ideal) from indoors and outdoors of a total of 43 patient rooms.
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Conclusion & Impact:This study has emphasized the importance of examination of mold flora of indoor air and clinical samples of high risk group patients intermittantly, in order to prevent opportunistic mold infections in crucial units especially during hospital constructions.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

This study was planned to determine the effect of building constructions in and around our hospital, on the development of opportunistic mold infections in immunocompromised patients hospitalized in bone marrow and kidney transplantation units and haematology and oncology units. Samples were collected from high risk units by an air sampler (Air Ideal) from indoors and outdoors of a total of 43 patient rooms. The most commonly isolated species from indoor air cultures of our hospital were Penicillium spp. (50.6%), Cladosporium spp. (20%), Chrysonilia spp. (11%) and Aspergillus (10.6%) species. When outdoor samples were considered, Penicillium spp. (38.8%) was still in the first line, followed by Cladosporium spp. (24.3%), Paecillomyces spp. (10.7%) and Aspergillus (8.7%) species. There was no statistically significant difference of total colony and spore numbers between the samples obtained from indoor and outdoor air (p>0.05), indicating the close relation with the construction studies in and around the hospital. Clinical samples including bronchoalveoler lavage (BAL) fluid, sputum, endotracheal aspirate and sinus tissue were collected from the total of 43 patients staying at these air sampled rooms, and eight of them (18.6%) yielded positivity for the growth of molds. Of them four were identified as Penicillium chrysogenum (sputum isolates), two as Aspergillus fumigatus (sputum and BAL isolates), one as Aspergillus flavus (BAL isolate), and one as Valsa sordida (sinus tissue) which is considered as a plant pathogen. A total of 53 sera, BAL, and tissue supernatant samples were screened by ELISA for the presence of galactomannan antigen, and five of the eight patients whose cultures were positive were also found positive for galactomannan antigen. One patient has died due to invasive aspergillosis whose BAL specimen and indoor air sample were positive for A. fumigatus. In evaluation of indoor air samples before and after the change of HEPA filters, statistically significant decrease was detected in total colony and spore numbers between the samples taken before and after the filter changes (p<0.005). This study has emphasized the importance of examination of mold flora of indoor air and clinical samples of high risk group patients intermittantly, in order to prevent opportunistic mold infections in crucial units especially during hospital constructions.

Özet

Bu çalışmada, hastanemizde devam eden inşaat çalışmalarının, immün sistemi baskılanmış hastalarda görülen fırsatçı küf enfeksiyonları üzerindeki etkisinin incelenmesi amaçlanmıştır. Fırsatçı enfeksiyon riski yüksek olan hastaların bulunduğu kemik iliği ve böbrek transplantasyon üniteleri, hematoloji ve onkoloji üniteleri gibi bölümlerde yatan toplam 43 hastanın odalarının iç ve dış ortam havalarından "Air İdeal Hava Örnekleme Cihazı" ile kültürler alınmıştır. İç ortam hava örneklerinden en sık izole edilen küf mantarları, Penicillium (%50.6), Cladosporium (%20), Chrysonilia (%11) ve Aspergillus türleri (%10.6) olmuştur. Dış ortam hava örneklerinden izole edilen küf mantarları içinde yine Penicillium (%38.8) ilk sırayı almış, bunu Cladosporium (%24.3), Paecillomyces (%10.7) ve Aspergillus türleri (%8.7) izlemiştir. İç ve dış ortam hava örnekleri arasında üreme olması açısından ve toplam koloni ve spor sayıları bakımından istatistiksel olarak anlamlı bir farklılık bulunmamış (p>0.05), bu durum hastane çevresinde ve içerisinde yürütülen çeşitli inşaat çalışmalarına bağlanmıştır. Hava örneği alınan odalarda yatan hastalara ait 43 örneğin [bronkoalveoler lavaj (BAL), balgam, endotrakeal aspirat, sinüs dokusu] kültürleri yapılmış ve sekizinden (%18.6) çeşitli küf mantarları izole edilmiştir. Bunların dördü Penicillium chrysogenum (balgam izolatları), ikisi Aspergillus fumigatus (balgam ve BAL izolatı), birisi Aspergillus flavus (BAL izolatı) ve birisi de bir bitki patojeni olan Valsa sordida (sinüs dokusu izolatı) olarak tanımlanmıştır. Toplam 53 serum, BAL ve doku örneğinde ise ELISA ile galaktomannan antijeni araştırılmış ve klinik örneklerinden küf mantarı izole edilen sekiz hastanın beşinde pozitif bulunmuştur. BAL örneğinde ve odasının hava örneğinde A. fumigatus üretilen bir hasta invazif aspergilloz nedeniyle kaybedilmiştir. Hastanemizin kemik iliği nakil ünitesinde yer alan odaların havasında, HEPA filtre değişiminden önce ve sonra alınan örneklerde saptanan küf mantarlarının toplam koloni ve spor sayılarında istatistiksel olarak anlamlı bir azalma görülmüştür (p<0.005). İnşaat yapılanmalarının olduğu dönemlerde ve risk grubundaki hastaların bulunduğu ünitelerde, gerek havadaki küf florasının, gerekse hastaların kolonizasyonunun incelenmesinin, olası fırsatçı küf enfeksiyonlarını önlemede etkili olabileceği düşünülmüştür.

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Cite This Article

EREN, A., KUŞTİMUR, S., KALKANCI, A., ÜNVERDİ, S., AKTAŞ, F., SUCAK, G. T. (2008). Investigation of the effect of constructions in hospital environment on the crucial unıts for immunocompromised patiends and the development of opportunistic mold infections. Mikrobiyoloji Bülteni, Cilt: 42 - Sayı: 1, 83–93. https://ajindex.com/articles/298974

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