Journals / Mikrobiyoloji Bülteni / 2009 / Cilt: 43 - Sayı: 4

A rare case of endocarditis due to Moraxella catarrhalis in an immunocompetent patient

Nadir görülen bir olgu: İmmün kompetan bir hastada Moraxella catarrhalis'e bağlı endokardit

Pages
667–670
DOI
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AI Summary & Key Takeaways

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

In conclusion, M.catarrhalis should be considered as a possible cause of infective endocarditis even in immunocompetent patients.

📌 3 Key Takeaways

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Objective & Hypothesis:Moraxella catarrhalis is a gram-negative, catalase and oxidase positive diplococcus.
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Key Findings & Data:Forty three years old female patient was admitted to our hospital with the complaints of fever, nausea, night sweating and arthralgia for 20 days.
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Conclusion & Impact:In conclusion, M.catarrhalis should be considered as a possible cause of infective endocarditis even in immunocompetent patients.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Moraxella (branhamella) catarrhalis · İlaç tedavisi · kombinasyon

Abstract

Moraxella catarrhalis is a gram-negative, catalase and oxidase positive diplococcus. While it causes otitis media, sinusitis, bronchitis and conjunctivitis in children and adults, it has a tendency to cause lower respiratory tract infections in older ages. More severe clinical pictures with the range of sepsis to endocarditis are also seen in immunocompromised patients. In this report, a case of M.catarrhalis endocarditis in an immunocompetent host who needed valve replacement has been presented. Forty three years old female patient was admitted to our hospital with the complaints of fever, nausea, night sweating and arthralgia for 20 days. Physical examination revealed systolic murmurs on the apex, and vegetation on the atrial surface of mitral valve was detected by transthoracic echocardiography. Intravenous (IV) ampicillin (4x3 g/day) and gentamicin (3 x 80 mg/day) treatment was started empirically with pre-diagnosis of infective endocarditis. The treatment was modified to IV ceftriaxone (1x2 g/day) and gentamicin (3 x 80 mg/day) due to the reporting of gram-negative bacilli in blood culture (BacT/ALERT 3D, bioMerieux, France) on the next day. Gram-negative cocobacilli/diplococci were detected with Gram stain on the smear prepared from the blood culture bottle. Simultaneous subcultures to blood agar and eosin methylene blue agar yielded white colored, S-type, non-hemolytic colonies on only blood agar. Catalase and oxidase tests were positive, while beta-lactamase activity was negative. The isolate was identified as M.catarrhalis by using API NH (bioMerieux, France) identification strips. M.catarrhalis was isolated from five different blood culture specimens of the patient. The focus for bacteremia could not be detected. The patient underwent mitral valve replacement operation as an emergency since the vegetation exhibited rapid growth on the fifth day of medical treatment. Antibacterial therapy was completed for 6 weeks. Control echocardiography revealed that artificial mitral valve was open and functional, thus the patient recovered completely without sequela. In conclusion, M.catarrhalis should be considered as a possible cause of infective endocarditis even in immunocompetent patients.

Özet

Gram-negatif, katalaz ve oksidaz pozitif bir diplokok olan Moraxella cotarrhalis, çocuk ve erişkinlerde otitis media, sinüzit, bronşit ve konjunktivite yol açarken, yaşlılarda alt solunum yolu enfeksiyonları oluşturma eğilimindedir. Immün sistemi bozuk olan hastalarda ise sepsisten endokardite kadar ciddi klinik tablolara yol açabilir. Bu raporda, immün kompetan bir konakta M.catarrhalis ile oluşan ve kapak replas-manı gerektiren bir endokardit olgusu sunulmuştur. Kırk üç yaşındaki bayan hasta, yirmi gündür devam eden ateş, bulantı, gece terlemesi ve artralji yakınmaları ile hastanemize başvurmuştur. Hastanın fizik muayenesinde sistolik üfürümün tespit edilmesi nedeniyle yapılan transtorasik ekokardiyografide, mitral kapak atrial yüzde vejetasyon belirlenmiştir. Enfektif endokardit ön tanısı ile hastaya ampirik olarak intrave-nöz (IV) ampisilin (4x3 g/gün) ve gentamisin (3 x 80 mg/gün) tedavisi başlanmıştır. Bir gün sonra, kan kültürlerinde (BacT/ALERT 3D, bioMerieux, France) gram-negatif basil sinyali olması üzerine, tedavi IV seftriakson (1x2 g/gün) ve gentamisin 3 x 80 mg olarak değiştirilmiştir. Kan kültür şişesinden hazırlanan preparatın Gram boyamasında gram-negatif kokobasil/diplokok tespit edilmiştir. Eş zamanlı yapılan pasajlarda 24 saatlik inkübasyondan sonra kanlı ağarda saf olarak üremiş, beyaz, S tipi, hemolizsiz koloniler gözlenmiştir. Bakterinin oksidaz ve katalaz testleri pozitif, beta-laktamaz aktivitesi negatif bulunmuş, tanımlama API NH (bioMerieux, France) stripleri ile yapılmıştır. Hastadan alınan toplam beş şişe kan kültüründe M.catarrhalis üremiş; bakteriyemi odağı ise saptanamamıştır. Tedavinin beşinci gününde vejetasyonun büyümesi üzerine hasta acil olarak öpere edilmiş, antibiyotik tedavisi altı haftaya tamamlanmıştır. Kontrol ekokardiyografisinde mitral protez kapağı açık ve fonksiyonel olan hasta iyileşmiş olarak taburcu edilmiştir. Sonuç olarak, altta yatan hastalığı ve immün süpresyonu olmayan olgularda da, M.catarrha-//s'in endokardit etkeni olabileceği akılda tutulmalıdır.

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Cite This Article

TANYEL, E., FIŞGIN, T. N., ESEN, Ş., DARKA, Ö., BAHÇIVAN, M., LEBLEBİCİOĞLU, H., TÜLEK, N. (2009). A rare case of endocarditis due to Moraxella catarrhalis in an immunocompetent patient. Mikrobiyoloji Bülteni, Cilt: 43 - Sayı: 4, 667–670. https://ajindex.com/articles/298900

References (1)

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