title: [Value of the echography of the maternal kidney during pregnancy].
abstract: Routine ultrasonographic detection of renal tract dilatations in pregnant women is used to define a high risk population for urinary tract infections. In a first group of 96 patients with symptomatic urinary tract infection, 34% of the cases of uncomplicated infection were accompanied by ultrasonographic abnormalities, while 73% of cases of pyelonephritis presented such signs. Antibody coated bacteria were only found in 12% of uncomplicated urinary tract infections and in 30% of cases of pyelonephritis. In a second group of 273 patients, routine ultrasonography revealed abnormalities in 11.5% of cases. 7.5% of patients had dilatations of the upper renal tract, 2% had renal stones and 2% had occult renal malformations. Dilatations of the upper renal tract were associated with asymptomatic urinary tract infections in 30% of cases. Screening for upper renal tract dilatations is recommended between the 17th and 20th weeks of pregnancy. The presence of such lesions constitutes a risk factor for urinary tract infection and appropriate prophylactic treatment should be prescribed.
mesh_terms: D000208:Acute Disease; D004108:Dilatation, Pathologic / Q000175:diagnosis; D005260:Female; D006801:Humans; D007668:Kidney / Q000473:pathology*; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000175:diagnosis*; D011446:Prospective Studies; D011704:Pyelonephritis / Q000175:diagnosis*; D014463:Ultrasonography; D014552:Urinary Tract Infections / Q000175:diagnosis*
vernacular_title: Intérêt de l'échographie du rein maternel pendant la grossesse.