This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
Which one of the following is true about catheter associated UTI? 
Select and explain. 
A. Most catheter associated UTI patients are symptomatic, B. Significant bacteriuria occurs in patients catheterized longer than 2 weeks, C. Most commonly infection is due to staph & streptococcus, D. All of the above
A: Most catheter associated UTI patients are symptomatic
Answer: A: Most catheter associated UTI patients are symptomatic 
Explanation: (A) Most catheter associated UTI patients are symptomatic# Catheter associated urinary tract infections account for 40 percent of all nosocomial infections and is the most common source of gram-negative bacteremia in hospitalized patients> Diagnosis of catheter-associated urinary tract infection can be made when the urine culture shows 100 or more CFU per mL of urine from a catheterized patient.> Microbiology of catheter-associated urinary tract infections includes E. coli and Proteus, Enterococcus, Pseudomonas, Enterobacter, Serratia & Candida species> Risk factors: Prolonged catheterization >6 days Female gender Diabetes Malnutrition Azotemia (creatinine >2.0 mg/dL Ureteral stent Antimicrobial-drug therapy