Paper I — 2021 May (Supplementary) (2010 Scheme) — Q9

Paper I

2021 May (Supplementary) (2010 Scheme) · 40 marks · 120 min

Question

Define significant bacteriuria. Two examples of bacteria causing UTI

Q92 marksShort Notes★✓

Answer

Significant bacteriuria (Kass’s criterion) is defined as the presence of ≥10⁵ colony-forming units (CFU) per mL of a single bacterial species in a properly collected, clean-catch midstream urine sample — this threshold distinguishes true urinary tract infection from contamination by periurethral/perineal flora. (Lower counts, e.g., ≥10²–10³ CFU/mL, may still be considered significant in symptomatic patients, in suprapubic aspirate samples, or with certain fastidious organisms.)

Two examples of bacteria causing UTI: Escherichia coli (the commonest cause) and Klebsiella pneumoniae.

(Other valid examples: Proteus mirabilis, Staphylococcus saprophyticus, Enterococcus faecalis, Pseudomonas aeruginosa.)

Related Concepts

1. 1Urinary Tract Infection

Other Years Asked

1. 1A 25 year old female patient came to medical O.P with history of high grade fever with chills rigor. She also complaints of painful micturition.  What is your provisional diagnosis  Name four common bacteria causing this condition  Describe in detail the sample collection transport and processing for the laboratory diagnosis of this condition  Name four drugs used for treating this patient  What are the predisposing factors for the above condition (1+2+4+2+1)2019 July (Supplementary) (2010 Scheme)Essay · 10 marks
2. 2A twenty five years old lady presented with frequency in passing urine and pain during micturition along with fever for the last five days. Microscopy of urine showed plenty of pus cells and bacilli . Answer the following:2015 September (Supplementary) (2010 Scheme)Essay · 10 marks
3. 3Describe the etiology, specimen collection and laboratory diagnosis of urinary tract infection. (2+2+4)2023 January (Supplementary) (2019 Scheme)Short Essay · 8 marks
4. 4A 26 years old pregnant lady presented with fever, dysuria suprapubic pain.2023 March (Supplementary) (2010 Scheme)Essay · 7 marks
5. 5Laboratory diagnosis of urinary tract infection2018 February (2010 Scheme)Short Note · 2 marks
6. 6Name four different bacteria causing urinary tract infection2021 February (Supplementary) (2010 Scheme)Short Note · 2 marks
7. 7Enumerate FOUR bacteria causing urinary tract infection2024 August (Supplementary) (2010 Scheme)Short Note · 2 marks