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Adaptive responses of cardiac function to fetal postural change as gestational age increases

OBJECTIVE: The cardiovascular system maintains homeostasis through a series of adaptive responses to physiological requirements. However, little is known about the adaptation of fetal cardiac function to gravity, according to gestational age. In the present study, we aimed to evaluate the adaptive r...

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Autores principales: Kim, Woo Jin, Choi, Hye Jin, Yang, Sun Young, Koo, Boo Hae, Ahn, Ki Hoon, Cho, Geum Joon, Hong, Soon Cheol, Oh, Min-Jeong, Kim, Hai-Joong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Society of Obstetrics and Gynecology; Korean Society of Contraception and Reproductive Health; Korean Society of Gynecologic Endocrinology; Korean Society of Gynecologic Endoscopy and Minimal Invasive Surgery; Korean Society of Maternal Fetal Medicine; Korean Society of Ultrasound in Obstetrics and Gynecology; Korean Urogynecologic Society 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5120061/
https://www.ncbi.nlm.nih.gov/pubmed/27896244
http://dx.doi.org/10.5468/ogs.2016.59.6.427
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author Kim, Woo Jin
Choi, Hye Jin
Yang, Sun Young
Koo, Boo Hae
Ahn, Ki Hoon
Cho, Geum Joon
Hong, Soon Cheol
Oh, Min-Jeong
Kim, Hai-Joong
author_facet Kim, Woo Jin
Choi, Hye Jin
Yang, Sun Young
Koo, Boo Hae
Ahn, Ki Hoon
Cho, Geum Joon
Hong, Soon Cheol
Oh, Min-Jeong
Kim, Hai-Joong
author_sort Kim, Woo Jin
collection PubMed
description OBJECTIVE: The cardiovascular system maintains homeostasis through a series of adaptive responses to physiological requirements. However, little is known about the adaptation of fetal cardiac function to gravity, according to gestational age. In the present study, we aimed to evaluate the adaptive responses of cardiac function to postural changes, using Tei index measurements. METHODS: Fetal echocardiography and Doppler examination were performed on 114 women with vertex singleton pregnancies at 19 to 40 weeks' gestation. Participants were placed in an upright seated position, and the Tei index for fetal left ventricular cardiac function was measured. The women were then moved into a supine position and the Tei index was re-measured. RESULTS: The mean Tei index when measured in an upright seated position was significantly lower than that measured in a supine positioning for all fetuses (0.528±0.103 vs. 0.555±0.106, P=0.014, respectively). This difference was also noted in fetuses with a gestational age of 28–40 weeks (0.539±0.107 vs. 0.574±0.102, P=0.011, respectively). However, there was no difference in the Tei index between an upright seated and a supine position among fetuses with a gestational age of <28 weeks (0.505±0.091 vs. 0.516±0.103, P=0.571, respectively). CONCLUSION: Postural changes from an upright seated to a supine position result in an increased Tei index after a gestational age of 28 weeks. This appears to reflect maturation in the adaptive responses of the fetal cardiovascular system to postural changes.
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spelling pubmed-51200612016-11-28 Adaptive responses of cardiac function to fetal postural change as gestational age increases Kim, Woo Jin Choi, Hye Jin Yang, Sun Young Koo, Boo Hae Ahn, Ki Hoon Cho, Geum Joon Hong, Soon Cheol Oh, Min-Jeong Kim, Hai-Joong Obstet Gynecol Sci Original Article OBJECTIVE: The cardiovascular system maintains homeostasis through a series of adaptive responses to physiological requirements. However, little is known about the adaptation of fetal cardiac function to gravity, according to gestational age. In the present study, we aimed to evaluate the adaptive responses of cardiac function to postural changes, using Tei index measurements. METHODS: Fetal echocardiography and Doppler examination were performed on 114 women with vertex singleton pregnancies at 19 to 40 weeks' gestation. Participants were placed in an upright seated position, and the Tei index for fetal left ventricular cardiac function was measured. The women were then moved into a supine position and the Tei index was re-measured. RESULTS: The mean Tei index when measured in an upright seated position was significantly lower than that measured in a supine positioning for all fetuses (0.528±0.103 vs. 0.555±0.106, P=0.014, respectively). This difference was also noted in fetuses with a gestational age of 28–40 weeks (0.539±0.107 vs. 0.574±0.102, P=0.011, respectively). However, there was no difference in the Tei index between an upright seated and a supine position among fetuses with a gestational age of <28 weeks (0.505±0.091 vs. 0.516±0.103, P=0.571, respectively). CONCLUSION: Postural changes from an upright seated to a supine position result in an increased Tei index after a gestational age of 28 weeks. This appears to reflect maturation in the adaptive responses of the fetal cardiovascular system to postural changes. Korean Society of Obstetrics and Gynecology; Korean Society of Contraception and Reproductive Health; Korean Society of Gynecologic Endocrinology; Korean Society of Gynecologic Endoscopy and Minimal Invasive Surgery; Korean Society of Maternal Fetal Medicine; Korean Society of Ultrasound in Obstetrics and Gynecology; Korean Urogynecologic Society 2016-11 2016-11-15 /pmc/articles/PMC5120061/ /pubmed/27896244 http://dx.doi.org/10.5468/ogs.2016.59.6.427 Text en Copyright © 2016 Korean Society of Obstetrics and Gynecology http://creativecommons.org/licenses/by-nc/3.0/ Articles published in Obstet Gynecol Sci are open-access, distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Kim, Woo Jin
Choi, Hye Jin
Yang, Sun Young
Koo, Boo Hae
Ahn, Ki Hoon
Cho, Geum Joon
Hong, Soon Cheol
Oh, Min-Jeong
Kim, Hai-Joong
Adaptive responses of cardiac function to fetal postural change as gestational age increases
title Adaptive responses of cardiac function to fetal postural change as gestational age increases
title_full Adaptive responses of cardiac function to fetal postural change as gestational age increases
title_fullStr Adaptive responses of cardiac function to fetal postural change as gestational age increases
title_full_unstemmed Adaptive responses of cardiac function to fetal postural change as gestational age increases
title_short Adaptive responses of cardiac function to fetal postural change as gestational age increases
title_sort adaptive responses of cardiac function to fetal postural change as gestational age increases
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5120061/
https://www.ncbi.nlm.nih.gov/pubmed/27896244
http://dx.doi.org/10.5468/ogs.2016.59.6.427
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