الفهرس 
Morphological Changes of the Urinary System during PregnancyOnly 14 pages are availabe for public view
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Abstract
T
he most frequent medical disorder during pregnancy is urinary tract infection (UTI). The presence of 100,000 microbe per million of urine taken from a clean catch mid-stream urine specimen with no symptoms referable to the urinary system is defined as asymptomatic bacteriuria (ASB). The latter occurs in 10-15% of pregnant women and if untreated will develop symptomatic urinary tract infection in 30 - 40 % of cases (Hoston, 2002; Hazir et al., 2007; Tomas et al., 2017; USPSTF, U.S. Preventive Service Task Force, 2008). ASB may lead to complications that affect both mother & fetus; as pyelonephritis, maternal anemia and sepsis, preterm labor, low birth weight (Gilbert and Macones, 2013).