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November 9, 1970

Antibiotic Usage in Urinary Tract Infections

Author Affiliations

Madison, Wis

JAMA. 1970;214(6):1122. doi:10.1001/jama.1970.03180060095028

To the Editor.—  The specific answers for the points Dr. Rosenthal raises in his letter are as follows:The definition of urinary tract infections used during the prevalence studies is essentially as follows:

Asymptomatic Bacteriuria.—  This term is applied to those persons having colony counts in urine of greater than 100,000 organisms per milliliter without previous or current manifestations of infection; such asymptomatic urinary tract infections should be classified as nosocomial if an earlier urine culture was negative at a time when the patient was not receiving antibiotics. If a patient is admitted to the hospital with a urinary tract infection, subsequent culture of a new pathogen in numbers greater than 100,000 organisms per milliliter should be regarded as a nosocomial infection.

Other Urinary Tract Infections.—  The onset of clinical signs or symptoms of urinary tract infection (fever, dysuria, costovertebral angle tenderness, suprapubic tenderness, etc) in a hospitalized patient in