Bacterial Profile of Lower Respiratory Tract Infections in Adults and their Antibiotic Susceptibility Pattern with Detection of MRSA, ESBLs and MBLs

Background: Lower respiratory tract infections (LRTIs) is one of the most common causes of mortality and morbidity across all age groups. In recent years, antibiotic resistance is constantly increasing. Thus, there is a need to monitor the bacteriological profile of pathogenic organisms. The present study aims to identify bacterial pathogens and their antibiotic susceptibility pattern.Methods: A prospective, observational, single centered study was conducted at tertiary care hospital for a period of 1 year i.e. from March 2016 to March 2017. A total of 733 sputum samples were collected and analyzed in microbiology lab. The samples went subjected to microscopy testing, culture and antibiotic sensitivity using suitable bacteriological methods.Results: From 733 sputum samples, about 51.34% were males and 48.56% were females. Approximately 49.65% of total samples were growth positive. Klebsiella was found to be the predominant microorganism followed by Methicillin sensitive Staphylococcus aureus (MSSA) and streptococcus. The gram-negative bacteria showed highest sensitivity for piperacillin/tazobactam, imipenem and ciprofloxacin. The gram-positive bacteria were found to be more susceptible for vancomycin, teicoplanin and amikacin.Conclusions: LRTIs are contagious form of disease and can rapidly disseminate among community. The irrational use of antibiotics complicates the management due to the antibiotic resistance. Local trend of antibiotic susceptibility pattern should be known as it helps in increasing the appropriate use of the antibiotics, decreasing the mortality and morbidity and reduces the anti-microbial resistance.

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Current Trend in the Antibiogram of Bacterial Pathogens of Adult Lower Respiratory Tract Infections in a Nigerian Tertiary Hospital

Asian Journal of Research in Infectious Diseases ◽

10.9734/ajrid/2021/v8i330237 ◽

2021 ◽

pp. 10-18

Author(s):

Oluwalana T. Oyekale ◽

Bola O. Ojo ◽

Damilola E. Oguntunmbi ◽

Oluwatoyin I. Oyekale

Keyword(s):

Respiratory Tract ◽

Antibiotic Susceptibility ◽

Lower Respiratory Tract ◽

Respiratory Tract Infections ◽

Bacterial Pathogens ◽

Empirical Treatment ◽

Gram Negative Bacteria ◽

Lower Respiratory Tract Infections ◽

Gram Negative ◽

Tract Infections

Background: Lower respiratory tract infections (LRTIs) are among the commonest infectious diseases requiring hospitalization. There is an increasing resistance development of bacterial pathogens of LRTIs to the commonly prescribed antibiotics necessitating regular surveillance for these bacteria and their antibiogram. Aim: To identify bacterial pathogens of adult LRTIs, determine their antibiotic susceptibility pattern, and suggest the best empirical treatment of adult LRTIs in the setting. Study Design: Descriptive cross-sectional study. Methods: A total of 194 respiratory samples from 194 consecutive consenting adult in-patient of a Federal Teaching Hospital were processed. Identification of isolated bacteria and antibiotic susceptibility testing of the isolates were carried out following the standard protocol. Results: Bacteria isolation was seen in 52.1% of all specimens, highest isolation rate was from sputum (55.2%). Isolation was higher in males (54.9%) than females (48.1%) but no significant difference was seen (P=0.36). Gram negative bacteria were predominantly isolated (64.4%) and Klebsilla pneumoniae was the most common (33.7%). Eight extended-spectrum beta-lactamase (ESBL) producers and 3 methicillin-resistant Staphylococcus aureus (MRSA) were also detected. All isolates were sensitive to imipenem and meropenem. All MRSAs were sensitive to vancomycin. There was poor sensitivity pattern seen against most antibiotics tested. Conclusion: Gram negative bacteria were the predominant bacterial pathogen isolated, and isolates were resistant to most antibiotics tested, though, all were sensitive to carbapenems. Levofloxacin plus gentamicin, and carbapenems were the suggested first and second line empirical treatment of choice respectively for adult LRTIs in this and similar settings.

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Antibiotic susceptibility of bacterial strains and bacteriological profile from patients with lower respiratory tract infections in a teaching hospital

Panacea Journal of Medical Sciences ◽

10.18231/j.pjms.2021.066 ◽

2021 ◽

Vol 11 (2) ◽

pp. 326-330

Author(s):

Ritu Vaish

Keyword(s):

Respiratory Tract ◽

Teaching Hospital ◽

Antibiotic Susceptibility ◽

Lower Respiratory Tract ◽

Respiratory Tract Infections ◽

Bacterial Isolates ◽

Lower Respiratory Tract Infections ◽

Female Ratio ◽

Gram Negative ◽

Tract Infections

Lower respiratory tract infections (LRTI) are one of the commonest health problems demanding frequent consultation and hospitalization. Unnecessary and inappropriate initial antibiotic therapy is a potentially modifiable factor that is associated with increased mortality in patients with serious infections. To study bacterial profile and susceptibility pattern of lower respiratory tract infections in a teaching hospital.Prospective study done in the department of Microbiology at Prathima Institute of Medical Sciences, Nagunuru, Karimnagar, Telangana., Tover a period of 18 months ie from January 2019 to July 2020. A total of 120 samples from respiratory tract were studied for bacterial isolates and antibiotic susceptibility. A total of 120 cases were studied. The male to female ratio was 2:1. Among the bacterial isolates, 76.6% were Gram negative bacilli and 23.3% were gram positive cocci. Among Gram negative bacteria, the predominant bacterial isolate was Klebisella. pneumoniae (45.8%) followed by Pseudomonas. aeruginosa (28.3%.)Present study, was based on the pattern of resistance to commonly used antibiotics by organisms causing lower respiratory tract infections (LRTIs) in our institute. This may help us to study the more susceptible group of drugs in our institute which would help prepare an antibiogram and develop a policy for rational antibiotic prescription.

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