| Fetal cardiac output and its distribution to the placenta at 11-20 weeks of gestation. | |
| | |
MedLine Citation:
|
PMID: 18973262 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVES: To measure serial changes in cardiac output (CO) and its fraction distributed to the placenta at 11-20 weeks of gestation. METHODS: Blood flow velocities, and diameters of the aorta, pulmonary artery and umbilical vein, were measured longitudinally in 143 fetuses using pulsed-wave Doppler and two-dimensional ultrasound examination. RESULTS: Volume blood flow of the aorta (left ventricular CO) and the pulmonary artery (right ventricular CO) increased in a similar manner with advancing gestational age. The combined cardiac output (CCO) increased from 9 mL/min to 121 mL/min, and the placental volume blood flow (Q(uv)) increased from 1.2 mL/min to 25.3 mL/min during 11-20 weeks of gestation. The fraction of CCO diverted to the placenta increased from 14% at 11 weeks to 21% at 20 weeks. CONCLUSIONS: We have established longitudinal reference ranges for fetal CO and Q(uv) at 11-20 weeks of gestation. The fraction of CCO distributed to the placenta increased significantly during this period, reflecting rapid placental growth and establishment of a low-resistance circulation. |
| | |
Authors:
|
T Vimpeli; H Huhtala; T Wilsgaard; G Acharya |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology Volume: 33 ISSN: 1469-0705 ISO Abbreviation: Ultrasound Obstet Gynecol Publication Date: 2009 Mar |
Date Detail:
|
Created Date: 2009-03-04 Completed Date: 2010-02-04 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9108340 Medline TA: Ultrasound Obstet Gynecol Country: England |
Other Details:
|
Languages: eng Pagination: 265-71 Citation Subset: IM |
Copyright Information:
|
(c) 2008 ISUOG. Published by John Wiley & Sons, Ltd. |
Affiliation:
|
Central Maternity Unit, City of Tampere, Tampere, Finland. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adolescent Adult Algorithms Aorta / physiology Blood Flow Velocity / physiology Cardiac Output / physiology* Female Fetal Heart / physiology*, ultrasonography Gestational Age Heart Ventricles / physiopathology, ultrasonography Humans Male Placenta / blood supply*, ultrasonography Pregnancy Prospective Studies Pulmonary Artery / physiology Reproducibility of Results Ultrasonography, Prenatal / methods Umbilical Veins / physiology Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Motor threshold in transcranial magnetic stimulation: the impact of white matter fiber orientation a...
Next Document: Usefulness of repeat cytology at the time of first colposcopy.