Jain Vidhi, Hussain Nayani Amrin Fatema Afzal, Siddiqui Tasneem, Sahu Chinmoy, Ghar Malay, Prasad Kashi Nath
Department of Microbiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India.
JMM Case Rep. 2017 Oct 16;4(10):e005122. doi: 10.1099/jmmcr.0.005122. eCollection 2017 Oct.
Species of the genus are emerging healthcare-associated pathogens, often colonizing the hospital environment. There are no clear guidelines available for antimicrobial susceptibility of this organism. In this report we present the first case, to our knowledge, of simultaneous central-line-associated bloodstream infection (CLABSI) and ventilator-associated pneumonia (VAP) due to from India. A 62 years old man with a history of a road traffic accident 1 month previously was referred to our center for further management. He developed features of sepsis and aspiration pneumonia on day 3 of admission. Four blood cultures (two each from central and peripheral lines) and two tracheal aspirate cultures grew pure yellow colonies of bacteria. Both matrix assisted laser desorption ionization time of flight mass spectrometry, (MALDI-TOF MS; bioMérieux, Marcy-L'Etoile, France,) and BD Phoenix (BD Biosciences, Maryland, USA) identified the organism as . However, BD Phoenix failed to provide MIC breakpoints. The isolates of both from blood and tracheal aspirate showed identical susceptibility patterns: resistant to cephalosporins and carbapenems and susceptible to ciprofloxacin, levofloxacin, amikacin, trimethoprim+sulfamethoxazole, piperacillin-tazobactam, cefoperazone-sulbactam, doxycycline, minocycline and vancomycin. Following levofloxacin therapy, the fever responded within 48 h and procalcitonin levels decreased without removal of the central line or endotracheal tube. However, the patient developed sudden cardiac arrest on day 10 of treatment and could not be resuscitated. Rapid and accurate identification of in the laboratory, preferably based on MALDI-TOF, is essential for guiding therapy. responds well to fluoroquinolones without the need to remove indwelling catheters.
该属的物种是新出现的与医疗保健相关的病原体,常定殖于医院环境中。目前尚无关于该微生物抗菌药敏性的明确指南。据我们所知,在本报告中,我们呈现了首例来自印度的因该菌导致的同时发生中心静脉导管相关血流感染(CLABSI)和呼吸机相关性肺炎(VAP)的病例。一名62岁男性,1个月前有道路交通事故史,被转诊至我们中心进行进一步治疗。入院第3天,他出现了脓毒症和吸入性肺炎的症状。四份血培养(中心静脉和外周静脉各两份)以及两份气管吸出物培养均培养出纯黄色菌落的细菌。基质辅助激光解吸电离飞行时间质谱仪(MALDI-TOF MS;法国马西-埃图瓦勒生物梅里埃公司)和BD Phoenix(美国马里兰州BD生物科学公司)均将该微生物鉴定为该菌。然而,BD Phoenix未能提供最低抑菌浓度(MIC)断点。来自血液和气管吸出物的该菌分离株显示出相同的药敏模式:对头孢菌素和碳青霉烯类耐药,对环丙沙星、左氧氟沙星、阿米卡星、甲氧苄啶+磺胺甲恶唑、哌拉西林-他唑巴坦、头孢哌酮-舒巴坦、多西环素、米诺环素和万古霉素敏感。接受左氧氟沙星治疗后,发热在48小时内得到缓解,降钙素原水平下降,且未拔除中心静脉导管或气管内导管。然而,患者在治疗第10天突然心脏骤停,未能复苏。在实验室中快速准确地鉴定该菌,最好基于MALDI-TOF,对于指导治疗至关重要。该菌对氟喹诺酮类药物反应良好,无需拔除留置导管。