Journal article
A feasibility study of the use of UmbiFlow™ to assess the impact of heat stress on fetoplacental blood flow in field studies
- Abstract:
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Objective
To evaluate the use of UmbiFlowTM in field settings to assess the impact of heat stress on umbilical artery resistance index (RI).
Methods
This feasibility study was conducted in West Kiang, The Gambia, West Africa; a rural area with increasing exposure to extreme heat. We recruited women with singleton fetuses who performed manual tasks (such as farming) during pregnancy to an observational cohort study. The umbilical artery RI was measured at rest, and during and at the end of a typical working shift in women at 28 weeks or more of pregnancy. Adverse pregnancy outcomes (APO) were classified as stillbirth, preterm birth, low birth weight, or small for gestational age, and all other outcomes as normal.
Results
A total of 40 participants were included; 23 normal births and 17 APO. Umbilical artery RI demonstrated a nonlinear relationship to heat stress, with indication of a potential threshold value for placental insufficiency at 32°C by universal thermal climate index and 30°C by wet bulb globe temperature.
Conclusions
The Umbiflow device proved to be an effective field method for assessing placental function. Dynamic changes in RI may begin to explain the association between extreme heat and APO with an identified threshold of effect.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Version of record, pdf, 735.9KB, Terms of use)
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- Publisher copy:
- 10.1002/ijgo.14480
Authors
- Publisher:
- Wiley
- Journal:
- International Journal of Gynecology and Obstetrics More from this journal
- Volume:
- 160
- Issue:
- 2
- Pages:
- 430-436
- Publication date:
- 2022-10-10
- Acceptance date:
- 2022-09-26
- DOI:
- EISSN:
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1879-3479
- ISSN:
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0020-7292
- Pmid:
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36165637
- Language:
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English
- Keywords:
- Pubs id:
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1282793
- Local pid:
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pubs:1282793
- Deposit date:
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2022-12-15
- ARK identifier:
Terms of use
- Copyright holder:
- Bonell et al.
- Copyright date:
- 2022
- Rights statement:
- © 2022 The Authors. International Journal of Gynecology & Obstetrics published by John Wiley & Sons Ltd on behalf of International Federation of Gynecology and Obstetrics. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
- Licence:
- CC Attribution (CC BY)
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