Total body water in pregnancy: assessment by using bioelectrical impedance
| Autor: | E J Nielsen, William A. Siders, Henry C. Lukaski, C. B. Hall |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Adult
Radioisotope Dilution Technique medicine.medical_specialty Body water Medicine (miscellaneous) Hematocrit Body weight Body Mass Index fluids and secretions Body Water Pregnancy Reference Values medicine Humans Deuterium Oxide skin and connective tissue diseases Nutrition and Dietetics medicine.diagnostic_test Obstetrics business.industry Body Weight Postpartum Period Sodium medicine.disease Gestation Female sense organs business Bioelectrical impedance analysis Body mass index Postpartum period |
| Zdroj: | The American Journal of Clinical Nutrition. 59:578-585 |
| ISSN: | 0002-9165 |
| Popis: | Determinations of total body water (113W) cal- culated from deuterium dilution spaces and bioelectrical-impe- dance measurements were made serially in a group of 15 women before, during, and after pregnancy. Similar measurements were made once in a group of 50 nonpregnant women and intermit- tently in another group of 10 women during pregnancy and post- partum. TBW increased significantly during pregnancy, then de- creased postpartum. Estimates of TBW in pregnancy and post- partum calculated with models derived from nonpregnant and pregnant women were similar to measured values. Changes in reactance and resistance explained more of the variance in pre- dicting changes in TBW than did body weight, abdominal cir- cumference, or hematocrit (50-75% vs 4-50%, respectively). Changes in TBW estimated with the nonpregnancy impedance model were significantly different than either the measured changes or changes predicted with the pregnancy impedance model. These findings indicate that the impedance method is a practical and valid method for determining longitudinal changes in TBW. Am J Cli,, Nutr 1994;59:578-85. |
| Databáze: | OpenAIRE |
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