229x Filetype PPTX File size 0.67 MB Source: pathology.sbmu.ac.ir
Percentage distribution of etiologic agents of urinary tract infections among outpatients and inpatients, by ... Specimen Collection Suprapubic aspiration: the best method to avoid contamination. Invasive and uncomfortable. Straight catheter technique: The next-best technique for obtaining urine specimens with minimal contamination Too labor intensive, costly for routine use and invasive Clean-catch midstream technique neither invasive nor uncomfortable. simple and inexpensive. can be performed in almost any clinical setting. there is no risk of introducing bacteria into the bladder there is no risk of complications. Colony counts from urine specimens collected by this method correlate reasonably well with those of specimens collected via suprapubic aspiration or straight catheterization The obvious disadvantage : the urine sample passes through the distal urethra and can become contaminated with commensal bacteria. Discouraged specimens for culture Specimens from urinary catheters in place for more than a few hours if required, the specimen must be taken from the sampling port of a newly inserted device. Foley catheter tips specimens from urinary diversions such as ileal loops Chronic nephrostomy collections and bagged urine collections . Simple procedures to decrease the contamination rate: cleansing of skin and mucous membranes adjacent to the urethral orifice before micturition collecting urine for culture from the midstream Mandatory information on the test requisition slip method of collection date and time of specimen collection patient demographic information any clinically relevant information (e.g., whether the patient was treated with antimicrobial agents or whether anatomic abnormalities, stones, or an indwelling urinary catheter were present)
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