Doppler echocardiographic assessment of fetal blood flow redistribution during maternal hyperoxygenation
| Autor: | H. Almström, S.-E. Sonesson |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Aortic valve
Fetus medicine.medical_specialty Radiological and Ultrasound Technology business.industry Cerebral arteries Obstetrics and Gynecology Hemodynamics Umbilical artery General Medicine medicine.anatomical_structure Reproductive Medicine Anesthesia medicine.artery Descending aorta Internal medicine Mitral valve Middle cerebral artery medicine Cardiology Radiology Nuclear Medicine and imaging business |
| Zdroj: | Ultrasound in Obstetrics and Gynecology. 8:256-261 |
| ISSN: | 0960-7692 |
| DOI: | 10.1046/j.1469-0705.1996.08040256.x |
| Popis: | Sixteen normal human fetuses were studied at both 20–23 and 30–33 weeks of gestation to investigate whether hemodynamic changes in the heart and major fetal arteries occurred in response to maternal hyperoxygenation in normal pregnancy. Velocity waveforms from the mitral valve, aortic valve, middle cerebral artery, aortic isthmus and umbilical artery were recorded before and during maternal breathing of 100% oxygen. The cerebral artery pulsatility index (PI) increased with oxygen administration at the first examination (1.56 ± 0.25, mean ± 1 SD, to 1.72 ± 0.28, p < 0.05). At the second examination this increase in cerebral artery PI was more consistent (1.89 ± 0.43 to 2.22 ± 0.43, p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text