Revista medico-chirurgicala a Societatii de Medici si Naturalisti din Iasi · 2010
[Fungi as emergent etiologic agents in ventilator-associated pneumonia after cardiac surgery].
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Serban Raluca Ioana, Dan Maria, Pânzaru Carmen Valentina, Anghel Diana, Dăscălescu D, Ciucu Liliana, Serban I, Tinică G
Аннотация
UNLABELLED: Evaluation of the fungal involvement in the etiology of ventilator-associated pneumonia (VAP) after cardiac surgery. The study had as target the patients diagnosed with VAP after cardiac surgery at the Institute of Cardiovascular Diseases in Iaşi, between April 2nd 2002 and December 31st 2009.
MATERIAL AND METHOD: Our study included only cases with fungal etiology of VAP. We examined quantitatively the tracheal aspirates with cytology quality score Q = 2+: microscopy and cultivation. The isolates with clinical significance (= 10(6)UFC/mL significantly associated to inflammatory cells) were identified by standard methods or based on the API system (bioMérieux) and tested by the breakpoints method for susceptibility to antifungal agents.
RESULTS: Among the 2167 operated patients, 35 of them were diagnosed with VAP through the clinical pulmonary infection score = 6. Fungi caused 15 of 44 VAP episodes. With a frequency of 30.19%, fungi are on 2nd place within the etiologic agents of VAP after non-fermenting Gram-negative bacilli (45.28%). The fungi involved in VAP were: Candida albicans (16.97%), Pneumocystis jirovecii (3.77%), while Candida glabrata, Candida sake, Candida krusei, Geotrichum capitatum and Cryptococcus humicola, amounted 1.89% each. The widespread use of broad spectrum antibiotics led to the emergence of fungi as a common cause of ventilator-associated pneumonia. The involvement in the VAP etiology of P. jirovecii, an un-cultivable fungus with special sensitivity to antibiotics, requires a careful microscopy of specimens.
MATERIAL AND METHOD: Our study included only cases with fungal etiology of VAP. We examined quantitatively the tracheal aspirates with cytology quality score Q = 2+: microscopy and cultivation. The isolates with clinical significance (= 10(6)UFC/mL significantly associated to inflammatory cells) were identified by standard methods or based on the API system (bioMérieux) and tested by the breakpoints method for susceptibility to antifungal agents.
RESULTS: Among the 2167 operated patients, 35 of them were diagnosed with VAP through the clinical pulmonary infection score = 6. Fungi caused 15 of 44 VAP episodes. With a frequency of 30.19%, fungi are on 2nd place within the etiologic agents of VAP after non-fermenting Gram-negative bacilli (45.28%). The fungi involved in VAP were: Candida albicans (16.97%), Pneumocystis jirovecii (3.77%), while Candida glabrata, Candida sake, Candida krusei, Geotrichum capitatum and Cryptococcus humicola, amounted 1.89% each. The widespread use of broad spectrum antibiotics led to the emergence of fungi as a common cause of ventilator-associated pneumonia. The involvement in the VAP etiology of P. jirovecii, an un-cultivable fungus with special sensitivity to antibiotics, requires a careful microscopy of specimens.