Singh Rajender, Kakati Barnali, Mittal Garima
Microbiology, Himalayan Institute of Medical Sciences, Swami Rama Himalayan University, Dehradun, IND.
Cureus. 2025 Jun 17;17(6):e86241. doi: 10.7759/cureus.86241. eCollection 2025 Jun.
Introduction Candidemia is a significant cause of morbidity and mortality in patients with sepsis, particularly in tertiary care settings. Shifts in species distribution and antifungal resistance underscore the need for localized epidemiological surveillance. Aim and objective This study aimed to evaluate the prevalence, species distribution, clinical risk factors, and antifungal susceptibility patterns of isolates in sepsis patients admitted to a tertiary care hospital in Uttarakhand, India. Methods A retrospective observational study was conducted from February 2022 to January 2024. Blood culture records of 17,712 sepsis patients were reviewed, among which 312 cases of candidemia were identified. Blood cultures were processed using the BAC-T ALERT system, and isolates were identified to the species level using conventional microbiological methods and the Vitek-2 system. Antifungal susceptibility testing was performed as per Clinical and Laboratory Standards Institute (CLSI) guidelines. Relevant demographic, clinical, and risk factor data were extracted and statistically analyzed using SPSS version 26.0. Associations between species and clinical variables were evaluated, with p-values < 0.05 considered statistically significant. Results The prevalence of candidemia among sepsis patients was 1.76% (312/17,712), with a mean age of 37.7 years and a male-to-female ratio of 1.72:1. Non- species predominated, led by 84 (26.9%), followed by 68 (21.8%), 58 (18.6%), and 37 (11.8%). was significantly associated with chronic kidney disease: 21 (25.0%) (p = 0.00018); with low-birth-weight neonates: 15 (25.9%) (p = 0.00024); and 12 (63.2%) with diabetes mellitus (p = 0.0067). was predominant in neonates: 31 (83.8%) (p < 0.001). Most isolates were susceptible to fluconazole 284 (91.0%), voriconazole 290 (93.0%), amphotericin B 296 (94.9%), and echinocandins 300 (96.1%). Fluconazole resistance was highest in 2/3 (66.7%) and 8/8 (100%), while echinocandin resistance was noted in caspofungin 7/19 (36.8%) and micafungin 3/19 (15.8%). Conclusion The study highlights an epidemiological shift toward non- species, particularly and , in candidemia cases. Routine species-level identification and antifungal susceptibility testing are crucial for guiding effective therapeutic strategies and supporting institutional antifungal stewardship.
引言
念珠菌血症是脓毒症患者发病和死亡的重要原因,在三级医疗环境中尤为如此。物种分布和抗真菌药物耐药性的变化凸显了进行局部流行病学监测的必要性。
目的
本研究旨在评估印度北阿坎德邦一家三级医院收治的脓毒症患者中念珠菌血症的患病率、物种分布、临床危险因素及分离株的抗真菌药敏模式。
方法
2022年2月至2024年1月进行了一项回顾性观察研究。回顾了17712例脓毒症患者的血培养记录,其中确诊312例念珠菌血症病例。使用BAC-T ALERT系统处理血培养样本,并采用传统微生物学方法和Vitek-2系统将分离株鉴定到物种水平。根据临床和实验室标准协会(CLSI)指南进行抗真菌药敏试验。提取相关的人口统计学、临床和危险因素数据,并使用SPSS 26.0版进行统计分析。评估物种与临床变量之间的关联,p值<0.05被认为具有统计学意义。
结果
脓毒症患者中念珠菌血症的患病率为1.76%(312/17712),平均年龄为37.7岁,男女比例为1.72:1。非白色念珠菌属占主导,光滑念珠菌84例(26.9%)居首,其次是热带念珠菌68例(21.8%)、近平滑念珠菌58例(18.6%)和克柔念珠菌37例(11.8%)。光滑念珠菌与慢性肾脏病显著相关:21例(25.0%)(p = 0.00018);热带念珠菌与低出生体重新生儿相关:15例(25.9%)(p = 0.00024);克柔念珠菌12例(63.2%)与糖尿病相关(p = 0.0067)。近平滑念珠菌在新生儿中占主导:31例(83.8%)(p < 0.001)。大多数分离株对氟康唑敏感284例(91.0%)、伏立康唑290例(93.0%)、两性霉素B 296例(94.9%)和棘白菌素300例(96.1%)。氟康唑耐药在光滑念珠菌中最高为2/3(66.7%),克柔念珠菌中为8/8(100%),而棘白菌素耐药在卡泊芬净中为7/19(36.8%),米卡芬净中为3/19(15.8%)。
结论
该研究突出了念珠菌血症病例中向非白色念珠菌属,尤其是光滑念珠菌和克柔念珠菌的流行病学转变。常规的物种水平鉴定和抗真菌药敏试验对于指导有效的治疗策略和支持机构抗真菌管理至关重要。