Carotene and Vitamin A in Pregnancy and the Early Puerperium.

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Abstract
The mean level for carotene and vitamin A in pregnant patients at term was 169 and 22 [mu]g/100 ml plasma, respectively, and differed significantly (P<.001) from levels found in non-pregnant women where carotene was 148 and vitamin A 38 [mu]g/100 ml. plasma. Puerperal values for carotene and vitamin A changed immediately following delivery and were significantly different (P < .005) from the pregnant group. Puerperal plasma values through the 5th day were 128, 122, 114, 115, 129 for carotene and 30, 32, 33, 29 and 30 [mu]g/l00 ml plasma for vitamin A and showed no apparent difference from values obtained in nonpregnant women. Carotene/vitamin A ratios for non-pregnant, pregnant and puerperal women were 3.9, 7.7, and 4.0, respectively, and this ratio appears to be a better parameter for detecting changes occurring in their metabolism. The association of vitamin A and carotene with changes in lipids during pregnancy was considered.

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