Bronchoalveolar lavage (BAL) Gram stain: Introduction, Report-Interpretation, Clinical Significance, and Keynotes

Gram negative cocobacilli in Gram staining of BAL and pus cells

Introduction Bronchoalveolar lavage (BAL) is a diagnostic procedure used to collect specimens from the lower respiratory tract, particularly from the alveolar spaces. It is performed by instilling sterile saline into a segment of the lung via a bronchoscope and then aspirating it back. Gram staining …

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Acinetobacter ursingii: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynote

Introduction Acinetobacter ursingii is a Gram-negative, non-fermentative, opportunistic bacterium belonging to the genus Acinetobacter. It is an uncommon species compared to Acinetobacter baumannii, but it has been increasingly recognized in healthcare-associated infections (HAIs). Reported cases include bacteremia, septicemia, pneumonia, urinary tract infections, and bloodstream infections, …

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Acinetobacter baumannii-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Acinetobacter baumannii in Gram staining of sputum

Introduction Acinetobacter baumannii is a Gram-negative, non-fermenting, aerobic coccobacillus. It is an opportunistic pathogen increasingly associated with nosocomial infections, particularly in critically ill or immunocompromised patients. Notorious for its antibiotic resistance, it has become a major global health concern, particularly in ICU settings. Morphology Pathogenicity …

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Proteus hauseri-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Proteus hauseri colony morphology on MacConkey agar of urine culture

Introduction Proteus hauseri is a Gram-negative, facultatively anaerobic bacillus in the Enterobacteriaceae family. It is closely related to other Proteus species and commonly found in soil, water, and the human gastrointestinal tract. Though less prevalent than P. mirabilis, P. hauseri can cause opportunistic infections—especially in …

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Pseudomonas fluorescens: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Gram negative rods (GNRs) of Pseudomonas fluorescens in Gram staining of culture

Introduction Pseudomonas fluorescens inhabits diverse environments and thrives in soil and water. Moreover, it plays a significant role in nutrient cycling. The bacterium exists in numerous ecological niches and adapts quickly to changes. Furthermore, researchers study it for its beneficial and harmful properties. It interacts …

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MDR ESKAPE-Introduction, Group of Pathogens, Clinical Importance, and Keynotes

Mucoid -lactose fermenting (MLF) colony of Klebsiella pneumonie on MacConkey agar of blood culture

Introduction MDR ESKAPE refers to a group of bacteria that resist multiple antibiotics. Firstly, these pathogens escape the effects of standard treatments. Moreover, they spread easily in healthcare settings. Additionally, they cause serious hospital-acquired infections. Consequently, clinicians face challenges treating these infections. Furthermore, MDR ESKAPE …

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Serratia odorifera-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Serratia odorifera-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Introduction Serratia odorifera is a Gram-negative bacterium from the Enterobacteriaceae family. Moreover, it inhabits environmental and clinical settings. Additionally, it shows potential as an opportunistic pathogen. Furthermore, it often causes nosocomial infections in vulnerable patients. Morphology The bacterium appears as a short, rod-shaped cell. It …

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Foley Catheter Culture and Sensitivity- Introduction, Report, Clinical Significance, Common Pathogens, and Keynotes

Foley Catheter Culture and Sensitivity- Introduction, Report, Clinical Significance, Common Pathogens, and Keynotes

Introduction The Foley catheter culture and sensitivity test identifies bacteria from catheterized urine samples. Additionally, it detects infections linked to catheter use. Furthermore, clinicians order the test for precise diagnosis. Moreover, the test distinguishes contamination from true infection. Consequently, it improves patient management. Report The …

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