Evidence of fetal cerebral vasodilatation induced by submaximal maternal dynamic exercise in human pregnancy
| Autor: | Carole Bazzi-Grossin, Philippe Bonnin, E. Savin, Jacques H. Ravina, Jean Paul Martineaud, Olivier Bailliart, Antoni W. Kedra, Nicole Ciraru-Vigneron |
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| Rok vydání: | 1997 |
| Předmět: |
Adult
medicine.medical_specialty Hemodynamics Physical exercise Blood Pressure Heart Rate Pregnancy Internal medicine Fetal hemoglobin Heart rate medicine Humans Exercise Fetus business.industry Uterus Obstetrics and Gynecology Brain medicine.disease Vasodilation Endocrinology medicine.anatomical_structure Pediatrics Perinatology and Child Health Circulatory system Vascular resistance Female Vascular Resistance business |
| Zdroj: | Journal of perinatal medicine. 25(1) |
| ISSN: | 0300-5577 |
| Popis: | To investigate the relationship between maternal exercise and fetal circulatory responses in humans during the third trimester of pregnancy, changes in uterine, umbilical and fetal cerebral circulations were measured by pulsed-Doppler ultrasound method in 14 healthy volunteer pregnant women before and just after a moderate non-exhaustive exercise. Maternal heart rate increased significantly reaching 80% of the theoretical maximal heart rate (TMHR) while uterine resistance indices did not change. The fetal heart rate and umbilical mean velocity were unchanged while umbilical resistance index decreased slightly (0.58 +/- 0.06 versus 0.62 +/- 0.07, P < 0.05). The fetal internal carotid artery mean velocity increased (23.2 +/- 5.3 versus 20.4 +/- 4.1 cm/s, P < 0.02) and the cerebral resistance index decreased (0.71 +/- 0.11 versus 0.80 +/- 0.10, P < 0.01). We conclude that submaximal maternal exercise at 80% of TMHR does not significantly alter uterine perfusion but involves a slight fetal cerebral vasodilation which could be due to a moderate fetal hemoglobin desaturation. |
| Databáze: | OpenAIRE |
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