Calciuria and preeclampsia.
Urinary calcium excretion has been reported to be diminished in preeclampsia. The objective of the present study was to determine urinary calcium excretion in pregnant patients with chronic arterial hypertension (CAH) and preeclampsia (PE), and in normotensive patients (N). Forty-four pregnant patients (gestational age, 20-42 weeks; 18 CAH, 17 PE, 9 N) were evaluated for calciuria, proteinuria, plasma uric acid and blood pressure. Patients with PE (82 +/- 15.1 mg/24 h) showed significantly lower calciuria (P < 0.05) than the group with CAH (147 +/- 24.9 mg/24 h) and the N group (317 +/- 86.0 mg/24 h) (P < 0.05, Student t-test). Plasma uric acid was significantly higher in the PE group (6.1 +/- 0.38 mg/dl) than the CAH group (5.0 +/- 0.33 mg/dl; P < 0.05), which also presented higher proteinuria levels, although the difference was not statistically significant. Diastolic and systolic blood pressure did not differ between the PE (164 +/- 105 mmHg) and CAH (164 +/- 107 mmHg) groups. Calciuria was significantly lower in the group with preeclampsia than in the group with chronic arterial hypertension. We conclude that calciuria can be a further factor for identifying preeclampsia.
Departamento de Ginecologia e Obstetrícia, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil.
J G
JG
Ramos
S H
SH
Martins-Costa
J B
JB
Kessler
C A
CA
Costa
E
E
Barros
D002118:Calcium / Q000652:urine*; D002908:Chronic Disease; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D006973:Hypertension / Q000652:urine*; D011225:Pre-Eclampsia / Q000150:complications / Q000175:diagnosis / Q000652:urine*; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular; D011262:Pregnancy Trimester, Second / Q000652:urine; D011263:Pregnancy Trimester, Third / Q000652:urine; D011446:Prospective Studies; D014527:Uric Acid / Q000097:blood
D014527:Uric Acid; D002118:Calcium