RESUMEN
Ocular signs and serum vitamin A concentration are commonly used tor the diagnosis of vitamin A deficiency. Recently, impression cytology was suggested as a method for early detection of vitamin A status. Twenty patients with normal eyes and digestive disease, and 111 children with normal eyes were evaluated by serum vitamin A concentration, relative-dose-response and conjunctival impression cytology test. About 90% of the patients with normal conjunctival impression cytology has normal vitamin A status. About 70% of the patients with abnormal conjunctival impression cytology has abnormal vitamin A status despite their seemingly normal clinical ocular examination, and so did the children. These results suggest that impression cytology can identify individuals with preclinical vitamin A deficiency.
RESUMEN
The energy expenditure in the late stage of pregnancy was studied. The workers of three kinds including spinner, sewers and kindergartners were selected, and ten healthy pregnant women were matched to non-pregnant as subjects. Energy consumption was measured by indirect method and calculated from dietary survey. The results showed that the energy expenditure for spinner, sewer and kindergartner in pregnancy was 9.5474, 10.1253 and 8.7287 MJ/day, but for non-pregnant woman was 9.4453 10.1281 and 8.1567 MJ/day respectively. Calorie intake was 10.8910, 11.2424 and 9.9830 MJ/day for pregnant women, but 9.2215, 10.4474 and 8.6734 MJ/ day for the non-pregnant women respectively. The difference of energy consumptions between the pregnant and non-pregnant women was not significant, but the calorie intake for the pregnant women was signigicantly higher (0.8368 MJ/day) than the non-pregnant. According to the energy consumption, we recommend the calorie intakes in the late stage of pregnancy may increase 0.8368 MJ/day.