[Urolithiasis and pregnancy. Presentation of results and management norm at the National Institute of Perinatology].
OBJECTIVE
Urolithiasis associated to pregnancy has an incidence of 1:1,500. It is more frequent in multiparity patients and is a risk factor for preterm labor in more than 40%.


OBJECTIVE
To know the incidence of urolithiasis associated to pregnancy at the National Institute of Perinatology; to determine the prevalence of: symptoms and signs, hydronephrosis, urinary tract infections, uropathogens, use of catheters and perinatals results.


METHODS
A cohort study was made from January 1998 to October 2003, to identify pregnant patients with urolithiasis. The clinical files were reviewed; Fisher's exact test was used for statistical analysis.


RESULTS
Twenty-one patients were diagnosed with urolithiasis; 71% had lumbar pain; 57.1% hematuria; 47.6% bilateral urolithiasis; and 33% bilateral hydronephrosis. All the patients who had lumbar pain, hematuria or were catheterized developed urinary tract infection, even with antibiotics prophylaxis. The 52.4% had at least one urinary tract infection episode. The average gestational age at birth was 38.5 weeks (+/- 5.6 weeks). The 84.22% were preterm births.


CONCLUSIONS
Our incidence is similar to the one reported in the literature. The 71.26% has at least one of the symptoms from the classic triad of urolithiasis. The prevalence of urinary tract infection in these patients is very high therefore; antibiotics prophylaxis and urine cultures are required. A lower prevalence of preterm births was obtained. A flow chart for diagnosis and follow-up was presented in order to decrease and to face the possible complications of this pathologic entity.
Romero Nava
Luis Eduardo
LE
Uroginecólogo de la Clínica de Urodinamia Ginecológica, Hospital Angeles del Pedregal.
Velázquez Sánchez
María del Pilar
Mdel P
Kunhardt Rasch
Jorge Ralph
JR
D000328:Adult; D015331:Cohort Studies; D003663:Decision Trees; D005260:Female; D006801:Humans; D015994:Incidence; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy; D015995:Prevalence; D014545:Urinary Calculi / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy