Urine tract infection is the most frequent infectious condition during pregnancy and may result in severe consequences for mother, fetus and newborn.This study tries to determine the features of urine tract infections in pregnant patients attending the prenatal clinic in the Ampliacion paucarpata health center of the ministry of health . Our objectives were:To determine the rate of urine infections, to identify the most frequent causative organisms , and to determine the sensitivity to antibiotics used in treatment of UTIs.It was descriptive, prospective, cross sectional study, with a sample of 88 pregnant patients between 12 and 40 gestational weeks, any parity with or without urine infection symptoms seen in the outpatient office between March and December 2010 .Urine samples were collected after giving their informed consent . Samples were studied by sedimentation, complete urine exam...