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[Alpha-amylase in the course of normal pregnancy and puerperium. II. Urine].

The study was carried out in a group of 176 women (39 non-pregnant women, 30 women in I trimester of pregnancy, 37--in II trimester, 35--in III trimester and 35 women on 3rd day of puerperium). All the women were healthy, had no renal diseases and did not report the history of urinary tract diseases. They did not have hypertension either. In all the women the authors determined the activity of alpha-amylase in the urine by the Caravay method. The urine collection was done according to Kokot. The results were determined in enzymes/h, and were calculated statistically. It was found that the activity of alpha-amylase increases as pregnancy progresses. In the women on 3rd day of puerperium the activity of the enzyme examined in the urine comes back to the values found in non-pregnant women.