Commonest organism giving rise to urinary tract infection –
Correct Answer: E. coli
Description: • Most UTIs are caused by a single bacterial species.
• At least 80% of the uncomplicated cystitis and pyelonephritis are due to E. coli, with most of pathogenic strains belonging to the O serogroups.
• Other less common uropathogens include Klebsiella, Proteus, and Enterobacter spp. and enterococci.
• In hospital acquired UTIs, a wider variety of causative organisms is found, including Pseudomonas and Staphylococcus spp.
• UTIs caused by S. aureus often result from hematogenous dissemination.
• Group B beta-hemolytic streptococci can cause UTIs in pregnant women.
• In children, Klebsiella and Enterobacter spp. are common causes of UTI.
• Anaerobic bacteria, lactobacilli, corynebacteria, streptococci (not including enterococci) and S. epidermidis are found in normal periurethral flora. They do not commonly cause UTIs in healthy individuals and are considered common urinary contaminants.
Category:
Surgery
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now