İnfeksiyon: Kronik Yarada Ampirik Lokal Antibiyotik Kullanımı
Özet
Kronik yaralarda sistemik antibiyotik kullanımı önerilirken, topikal antibiyotiklerin rolü henüz netleşmemiştir ve kısıtlı kanıtlar nedeniyle rutin kullanımdan kaçınılması tavsiye edilmektedir. Lokal antibiyotikler cilt irritasyonu, dermatit, yara iyileşmesinde gecikme ve yara yatağında sitotoksik yan etkilere yol açabilir; ayrıca dirençli mikroorganizma kolonizasyonunu artırabilir. Ancak, klasik enfeksiyon bulgusu göstermeyen ama iyileşmeyen, bakteri yükü yüksek (kritik kolonizasyon) derin yaralarda topikal antimikrobiyaller sürece katkı sağlayabilir. Kötü kokulu yaralar, yanıklar ve revaskülarizasyon sağlanamayan enfekte iskemik vakalar gibi özel durumlarda lokal antibiyotikler tercih edilebilir. Örneğin, anaerop kolonizasyonu olan yaralarda kokuyu azaltmak için kısa süreli metronidazol kullanılabilir. Türkiye’de basitrasin, neomisin, polimiksin B gibi ajanlar kombine olarak hafif yaralarda kullanılırken; MRSA dekolonizasyonunda mupirosin, geniş spektrumlu etkisiyle gümüş sülfadiazin ve iyi biofilm penetrasyonu olan rifamisin türevleri tercih edilmektedir. Geniş cerrahi kullanımına rağmen nitrofurazonun sık alerjik reaksiyon gösterdiği ve yara iyileşmesini geciktirdiği bilinmektedir. Sonuç olarak, direnç seçilimi ve lokal yan etkiler nedeniyle bu özel klinik durumlar dışında topikal antibiyotik uygulamalarından kaçınılmalıdır.
While systemic antibiotics are recommended for infected chronic wounds, the role of topical antibiotics remains unclear, and avoiding routine use is advised due to limited evidence. Local antibiotics can cause skin irritation, dermatitis, delayed wound healing, and cytotoxic side effects in the wound bed, alongside increasing the risk of resistant microorganism colonization. However, topical antimicrobials may contribute to the healing process in deep wounds with a high bacterial load (critical colonization) that lack classic infection signs but fail to heal. Local antibiotics may be considered in specific circumstances such as foul-smelling wounds, burns, and infected ischemic wounds where revascularization cannot be achieved. For instance, short-term local metronidazole can be utilized to reduce odor in wounds with anaerobic colonization. In Turkey, agents like bacitracin, neomycin, and polymyxin B are used in combination for minor wounds, whereas mupirocin is preferred for MRSA decolonization, silver sulfadiazine for its broad-spectrum effects, and rifamycin derivatives for their good biofilm penetration. Despite its widespread surgical use, nitrofurazone is known to cause frequent allergic reactions and delay wound healing. Consequently, except for these specific clinical situations, topical antibiotic applications should be avoided considering the risks of resistant microorganism selection and local adverse effects.
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