Placental Growth during Normal Pregnancy - A Magnetic Resonance Imaging Study
© 2016 S. Karger AG, Basel..
OBJECTIVE: To investigate normal human placental growth longitudinally throughout the second and third trimesters using MRI.
METHODS: Twenty normal, first-time singleton pregnancies were scanned 7 times between the 14th and 38th week of gestation, at 4-week intervals, using MRI. Placental volumes were measured in both sagittal and transversal slices. All placentas were weighed after delivery to make a comparative study.
RESULTS: Sixteen of the 20 women had increasing placental volumes from the 14th to 38th week of gestation. The 6th and 7th scan showed that 4 women had placentas of the same size. The mean placental volume increases linearly from the 14th till the 38th week of gestation, with a constant mean growth rate of 29.97 ml/week. The median placental volume extrapolated to delivery was to 856 ml (range 602-1,050 ml). The median weight of the exsanguinated placenta after delivery was 640 g (range 500-787 g). All pregnancies were carried to term, resulting in the delivery of healthy infants with good correlation between placental size and birth weight (R = 0.56, p = 0.009).
CONCLUSION: Placental growth was measured systematically in a longitudinal study through the second and third trimesters using MRI. MRI provides a safe and feasible method to measure placental growth. The mean placental growth was linear throughout the second and third trimesters.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2017 |
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| Erschienen: |
2017 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:82 |
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| Enthalten in: |
Gynecologic and obstetric investigation - 82(2017), 5 vom: 30., Seite 462-467 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Langhoff, Lasse [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 12.06.2018 Date Revised 12.06.2018 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1159/000452661 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM267086377 |
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| 500 | |a Date Revised 12.06.2018 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2016 S. Karger AG, Basel. | ||
| 520 | |a OBJECTIVE: To investigate normal human placental growth longitudinally throughout the second and third trimesters using MRI | ||
| 520 | |a METHODS: Twenty normal, first-time singleton pregnancies were scanned 7 times between the 14th and 38th week of gestation, at 4-week intervals, using MRI. Placental volumes were measured in both sagittal and transversal slices. All placentas were weighed after delivery to make a comparative study | ||
| 520 | |a RESULTS: Sixteen of the 20 women had increasing placental volumes from the 14th to 38th week of gestation. The 6th and 7th scan showed that 4 women had placentas of the same size. The mean placental volume increases linearly from the 14th till the 38th week of gestation, with a constant mean growth rate of 29.97 ml/week. The median placental volume extrapolated to delivery was to 856 ml (range 602-1,050 ml). The median weight of the exsanguinated placenta after delivery was 640 g (range 500-787 g). All pregnancies were carried to term, resulting in the delivery of healthy infants with good correlation between placental size and birth weight (R = 0.56, p = 0.009) | ||
| 520 | |a CONCLUSION: Placental growth was measured systematically in a longitudinal study through the second and third trimesters using MRI. MRI provides a safe and feasible method to measure placental growth. The mean placental growth was linear throughout the second and third trimesters | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a MRI | |
| 650 | 4 | |a Obstetric | |
| 650 | 4 | |a Placenta | |
| 650 | 4 | |a Pregnancy | |
| 700 | 1 | |a Grønbeck, Lene |e verfasserin |4 aut | |
| 700 | 1 | |a von Huth, Sebastian |e verfasserin |4 aut | |
| 700 | 1 | |a Axelsson, Anna |e verfasserin |4 aut | |
| 700 | 1 | |a Jørgensen, Connie |e verfasserin |4 aut | |
| 700 | 1 | |a Thomsen, Carsten |e verfasserin |4 aut | |
| 700 | 1 | |a Vejlstrup, Niels |e verfasserin |4 aut | |
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