Vora Agam, Krishnaprasad K
Senior Consulting Pulmonologist; Advanced Multi - Specialty Hospital, Mumbai, Maharashtra.
Consulting Physician, Mumbai, Maharashtra.
J Assoc Physicians India. 2017 Aug;65(8):51-52.
Respiratory tract infections have been an important cause of morbidity and mortality worldwide that is looming large especially in context of antibiotic resistance that is confronted both by a pulmonologist as well as a general practitioner. A reflection to this trend has been the rising phenomenon of MICs as shown the respiratory pathogens towards conventional antibiotics including macrolides or β lactam/β lactamase inhibitor combinations. Respiratory fluoroquinolones offer broad yet potent cover of respiratory pathogens leading to their obvious choice for empirical therapy for clinical persisters or high risk cases with prior history of antibiotics not-withstanding the clinical concerns in tropical countries.
To further assess the clinical role of respiratory quinolones in outpatient settings of India especially in line with the known endemicity of chronic infections or tuberculosis.
Cross-sectional, national survey questionnaire survey to explore the clinical perceptions, attitude and insights on the clinical use of respiratory fluoroquinolones was rolled out amongst pulmonologists and consultant physicians practicing respiratory medicine in India. Descriptive statistics was utilized to describe the numerical and categorical data.
Nationwide representative sample of fourteen pulmonologists provided response and clinical insight on the current management strategies for community acquired pneumonia (CAP) with 'respiratory' fluoroquinolones. Each of the doctor in the panel agreed that the ideal antibiotic for the treatment in CAP or lower respiratory tract infection (LRTI) should be highly effective with lesser side effects and broader spectrum covering atypical bacteria. Doctors agreed that most the fixed dose combination (FDC) has gone into disrepute probably because of pharmacokinetic incompatibility that could have further fuelled the epidemic of antibiotic resistance. 9 (64%) doctors suggested that there is omnipresence if not overwhelming presence of patient poor response to beta-lactam or fluoroquinolones in clinical practice. It was agreed that fluoroquinolones would be the rightful choice for patients with prior history of antibiotic use with or without comorbidities. Amongst the newer fluoroquinolones available, Garenoxacin offers broad and potent action against resistant strains for CAP. Despite the overwhelming concern of tropical infection in Indian context, Garenoxacin could be considered for mono- or add-on therapy in moderate to severe yet stable cases of CAP. Short course therapy of 5 to 10 days should offer no complimentary masking of anti-mycobacterial activity since the relevant minimum inhibitory concentration (MIC90) are high that are beyond the comprehension of suggested therapeutic dose of 400 mg tablets.
The growing incidence of Macrolide resistance suggests the clinical role of new generation fluoroquinolones including Garenoxacin as a clinically useful therapeutic strategy for moderate to severe CAP as monotherapy or in combination.
呼吸道感染一直是全球发病和死亡的重要原因,尤其是在抗生素耐药性的背景下,这一问题日益突出,肺科医生和全科医生都面临着这一挑战。 MIC值不断上升的现象反映了这一趋势,呼吸道病原体对包括大环内酯类或β-内酰胺/β-内酰胺酶抑制剂组合在内的传统抗生素的耐药性不断增强。呼吸喹诺酮类药物对呼吸道病原体具有广泛而有效的覆盖范围,因此对于临床持续感染患者或有抗生素使用史的高危病例,它们显然是经验性治疗的首选药物,尽管在热带国家存在临床担忧。
进一步评估呼吸喹诺酮类药物在印度门诊环境中的临床作用,特别是考虑到慢性感染或结核病的已知地方性。
在印度从事呼吸医学的肺科医生和顾问医生中开展了一项横断面全国调查问卷,以探讨对呼吸喹诺酮类药物临床使用的临床认知、态度和见解。使用描述性统计来描述数值和分类数据。
全国范围内有14名肺科医生的代表性样本对使用“呼吸”喹诺酮类药物治疗社区获得性肺炎(CAP)的当前管理策略提供了反馈和临床见解。小组中的每位医生都同意,治疗CAP或下呼吸道感染(LRTI)的理想抗生素应该是高效、副作用小且能覆盖非典型细菌的广谱抗生素。医生们一致认为,大多数固定剂量组合(FDC)已声名狼藉,可能是因为药代动力学不相容,这可能进一步助长了抗生素耐药性的流行。9名(64%)医生表示,在临床实践中,即使不是绝大多数患者,对β-内酰胺类或喹诺酮类药物反应不佳的情况也很普遍。大家一致认为,对于有或没有合并症的有抗生素使用史的患者,喹诺酮类药物是正确的选择。在现有的新型喹诺酮类药物中,加雷沙星对CAP的耐药菌株具有广泛而有效的作用。尽管在印度背景下对热带感染存在诸多担忧,但对于中度至重度但稳定的CAP病例,可以考虑将加雷沙星用于单药治疗或联合治疗。5至10天的短疗程治疗不应掩盖抗分枝杆菌活性,因为相关的最低抑菌浓度(MIC90)很高,超出了建议的400毫克片剂治疗剂量的范围。
大环内酯类耐药性的日益增加表明,包括加雷沙星在内的新一代喹诺酮类药物作为中度至重度CAP的单药治疗或联合治疗的临床有用治疗策略具有临床作用。