真菌性角膜炎病原学及其预后

Etiological characteristics of fungal keratitis and treatment outcomes

  • 摘要: 目的 分析真菌性角膜炎患者感染病原菌分布及耐药性,探讨真菌性角膜炎患者的预后与感染真菌菌属的关系。方法 选取2016年3月-2017年12月陆军军医大学第三附属医院接受治疗的真菌性角膜炎患者228例(228眼),根据患者感染病原菌属将其分为4组,分别为镰刀菌属组(110例)、曲霉菌属组(53例)、链格孢属组(36例)和其他菌属组(29例)。记录患者的病原菌分布及其耐药率,比较四组患者的预后水平分级,观察药物治愈患者用药时间及最佳矫正视力(BCVA)的差异。结果 228例真菌性角膜炎患者共检出242株真菌; 镰刀菌属、曲霉菌属、链格孢属对那他霉素、两性霉素B的耐药性较低,对伊曲康唑、氟康唑的耐药性较高; 四组患者的预后水平分级比较差异有统计学意义(P<0.05),镰刀菌属、曲霉菌属组患者预后水平较差(P<0.05); 药物治愈患者用药时间和BCVA整体比较差异有统计学意义(P<0.05); 镰刀菌属组中药物治愈患者的用药时间较曲霉菌属组、链格孢属组和其他菌属组延长(P<0.05),链格孢属组中药物治愈者患者BCVA高于镰刀菌属组、曲霉菌属组、其他菌属组(P<0.05)。结论 镰刀菌属、曲霉菌属、链格孢属是真菌性角膜炎患者常见菌属,临床应根据药敏试验结果合理选择抗菌药物进行治疗,镰刀菌属和曲霉菌属感染的患者预后较差,镰刀菌属感染患者药物治愈用药时间最长,链格孢属感染药物治愈患者视力恢复最好。

     

    Abstract: OBJECTIVE To investigate the distribution and drug resistance of pathogens causing infection in the patients with fungal keratitis and observe the correlation between the prognosis of the patients and the genera of infectious fungi. METHODS A total of 228 patients with fungal keratitis (228 eyes) who were treated in the third affiliated hospital of army medical university from Mar 2016 to Dec 2017 were enrolled in the study and divided into four groups according to the pathogens causing the infection: the fusarium group with 110 cases, the Aspergillus group with 53 cases, the alternaria group with 36 cases and the other genera group with 29 cases.The distribution and drug resistance rates of the pathogens were recorded, the levels of prognosis were compared among the four groups of patients, and the medication duration and best corrected visual acuity (BCVA) were observed and compared among the cured patients. RESULTSJP+3 Totally 242 strains of fungi were isolated from the 228 patients with fungal keratitis.The drug resistance rates of Fusarium, Aspergillus and Alternaria to natamycin and amphotericin B were low, while the drug resistance rates to itraconazole and fluconazole were high.There was significant difference in the prognosis level among the four groups of patients (P<0.05), the prognosis of the patients in the fusarium group and the Aspergillus group was poor (P<0.05).There were significant differences in the medication duration and BCVA among the cured patients (P<0.05).The medication duration of the cured patients was significantly longer in the fusarium group than in the Aspergillus group, the alternaria group and the other genera group (P<0.05).The BCVA of the cured patients was significantly higher in the alternaria group than in the Fusarium group, the Aspergillus group and the other genera group (P<0.05). CONCLUSION The Fusarium, Aspergillus and Alternaria are the common genera isolated from the patients with fungal keratitis.It is necessary for the hospital to reasonably use antibiotics based on the result of drug susceptibility testing, the prognosis of the patients with Fusarium and Aspergillus infection is poor, the medication duration of the patients with Fusarium infection is longest, and the cured patients with Alternaria infection have the best vision recovery.

     

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