A velocidade sistólica máxima aumenta na artéria cerebral média de fetos normais da 22.a a 38.a semana de gestação.
To assess peak systolic velocity values in middle cerebral artery (PSMCA) of normal fetuses from 22nd to 38th week of gestation.We made a prospective study of 33 healthy fetuses from 22nd to 38th to determine peak systolic velocity by Doppler velocimetry. Doppler ultrasound was performed by a single...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Ordem dos Médicos
2006-08-01
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| Series: | Acta Médica Portuguesa |
| Online Access: | https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/922 |
| Summary: | To assess peak systolic velocity values in middle cerebral artery (PSMCA) of normal fetuses from 22nd to 38th week of gestation.We made a prospective study of 33 healthy fetuses from 22nd to 38th to determine peak systolic velocity by Doppler velocimetry. Doppler ultrasound was performed by a single observer, always using the same apparatus. The Doppler tracing was obtained with a sample volume of 1 mm; placement was on the anterior middle cerebral artery, as close as possible to the skullcap. The insonation angle was kept below 20 degrees and the wall filter was adjusted to a frequency of 50-100 Hz. The PSMCA increases from 26.3 cm/s to 57.7 cm/s in middle cerebral artery from 22nd to 38th week of gestation (p < 0.05). There was a significant positive correlation between PSMCA and the gestational values (p < 0.001, r2 = 60.5%).In normal fetuses, the PSMCA increases from 22nd to 38th week of gestation. The Doppler velocimetry values for normal fetuses could be compared with those obtained during fetal anemia. |
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| ISSN: | 0870-399X 1646-0758 |