Cargando…

Seatbelt paths of the pregnant women sitting in the rear seat of a motor vehicle

PURPOSE: Seatbelt use during pregnancy is important to improve maternal and fetal survival after motor vehicle collisions. However, because the rear seatbelt of a motor vehicle tends to make contact with the neck, even if it is adequately used, some pregnant women sitting in the rear seat opt not to...

Descripción completa

Detalles Bibliográficos
Autores principales: Hitosugi, Masahito, Koseki, Takeshi, Kinugasa, Yuka, Hariya, Tomokazu, Maeda, Genta, Motozawa, Yasuki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5832453/
https://www.ncbi.nlm.nih.gov/pubmed/29198717
http://dx.doi.org/10.1016/j.cjtee.2017.06.007
_version_ 1783303324399828992
author Hitosugi, Masahito
Koseki, Takeshi
Kinugasa, Yuka
Hariya, Tomokazu
Maeda, Genta
Motozawa, Yasuki
author_facet Hitosugi, Masahito
Koseki, Takeshi
Kinugasa, Yuka
Hariya, Tomokazu
Maeda, Genta
Motozawa, Yasuki
author_sort Hitosugi, Masahito
collection PubMed
description PURPOSE: Seatbelt use during pregnancy is important to improve maternal and fetal survival after motor vehicle collisions. However, because the rear seatbelt of a motor vehicle tends to make contact with the neck, even if it is adequately used, some pregnant women sitting in the rear seat opt not to fasten the belt. The purpose of this study is to explore seatbelt–neck contact for pregnant women sitting in the rear seat of a motor vehicle. METHODS: We carried out an anthropometric study. Japanese women who were ≥30 weeks pregnant (n = 12) sat in the left side of the rear seat of a typical mid-size passenger sedan and fastened the seatbelt. Seating posture was investigated by measuring the coordinates of the anthropometric data points of the pregnant women (head, shoulder, hip joint, and knee joint). The belt path was analyzed by measuring the clearance between the belt and the sternum or navel. RESULTS: Among the 12 pregnant women at 33.9 week ± 3.3 week gestation, the shoulder belt deviated to the right side and subsequently contacted to the neck in four pregnant women (Contact group). The height of the Contact group was significantly shorter than that of Non-contact group (152.3 cm ± 3.0 cm vs. 159.0 cm ± 3.3 cm, p = 0.008). Regarding the relative position of the seatbelt to the subject's body, the distances from the top of the sternum to the center of the shoulder belt were significantly shorter in Contact group (3.9 cm ± 3.5 cm) than that in the Non-contact group (8.0 cm ± 1.6 cm, p = 0.03). However, no significant difference was found for the distance from the umbilicus to the center of the lap belt. CONCLUSION: Our findings show that because of short height and late term of pregnancy with protrusion of the abdomen, the shoulder belt deviates to the right or left, avoiding the protruded uterus, and subsequently makes contact with the neck. Seatbelt systems for rear seats need to be developed to improve passenger safety, especially for pregnant women.
format Online
Article
Text
id pubmed-5832453
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher Elsevier
record_format MEDLINE/PubMed
spelling pubmed-58324532018-03-06 Seatbelt paths of the pregnant women sitting in the rear seat of a motor vehicle Hitosugi, Masahito Koseki, Takeshi Kinugasa, Yuka Hariya, Tomokazu Maeda, Genta Motozawa, Yasuki Chin J Traumatol Original Article PURPOSE: Seatbelt use during pregnancy is important to improve maternal and fetal survival after motor vehicle collisions. However, because the rear seatbelt of a motor vehicle tends to make contact with the neck, even if it is adequately used, some pregnant women sitting in the rear seat opt not to fasten the belt. The purpose of this study is to explore seatbelt–neck contact for pregnant women sitting in the rear seat of a motor vehicle. METHODS: We carried out an anthropometric study. Japanese women who were ≥30 weeks pregnant (n = 12) sat in the left side of the rear seat of a typical mid-size passenger sedan and fastened the seatbelt. Seating posture was investigated by measuring the coordinates of the anthropometric data points of the pregnant women (head, shoulder, hip joint, and knee joint). The belt path was analyzed by measuring the clearance between the belt and the sternum or navel. RESULTS: Among the 12 pregnant women at 33.9 week ± 3.3 week gestation, the shoulder belt deviated to the right side and subsequently contacted to the neck in four pregnant women (Contact group). The height of the Contact group was significantly shorter than that of Non-contact group (152.3 cm ± 3.0 cm vs. 159.0 cm ± 3.3 cm, p = 0.008). Regarding the relative position of the seatbelt to the subject's body, the distances from the top of the sternum to the center of the shoulder belt were significantly shorter in Contact group (3.9 cm ± 3.5 cm) than that in the Non-contact group (8.0 cm ± 1.6 cm, p = 0.03). However, no significant difference was found for the distance from the umbilicus to the center of the lap belt. CONCLUSION: Our findings show that because of short height and late term of pregnancy with protrusion of the abdomen, the shoulder belt deviates to the right or left, avoiding the protruded uterus, and subsequently makes contact with the neck. Seatbelt systems for rear seats need to be developed to improve passenger safety, especially for pregnant women. Elsevier 2017-12 2017-11-04 /pmc/articles/PMC5832453/ /pubmed/29198717 http://dx.doi.org/10.1016/j.cjtee.2017.06.007 Text en © 2017 Daping Hospital and the Research Institute of Surgery of the Third Military Medical University. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Original Article
Hitosugi, Masahito
Koseki, Takeshi
Kinugasa, Yuka
Hariya, Tomokazu
Maeda, Genta
Motozawa, Yasuki
Seatbelt paths of the pregnant women sitting in the rear seat of a motor vehicle
title Seatbelt paths of the pregnant women sitting in the rear seat of a motor vehicle
title_full Seatbelt paths of the pregnant women sitting in the rear seat of a motor vehicle
title_fullStr Seatbelt paths of the pregnant women sitting in the rear seat of a motor vehicle
title_full_unstemmed Seatbelt paths of the pregnant women sitting in the rear seat of a motor vehicle
title_short Seatbelt paths of the pregnant women sitting in the rear seat of a motor vehicle
title_sort seatbelt paths of the pregnant women sitting in the rear seat of a motor vehicle
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5832453/
https://www.ncbi.nlm.nih.gov/pubmed/29198717
http://dx.doi.org/10.1016/j.cjtee.2017.06.007
work_keys_str_mv AT hitosugimasahito seatbeltpathsofthepregnantwomensittingintherearseatofamotorvehicle
AT kosekitakeshi seatbeltpathsofthepregnantwomensittingintherearseatofamotorvehicle
AT kinugasayuka seatbeltpathsofthepregnantwomensittingintherearseatofamotorvehicle
AT hariyatomokazu seatbeltpathsofthepregnantwomensittingintherearseatofamotorvehicle
AT maedagenta seatbeltpathsofthepregnantwomensittingintherearseatofamotorvehicle
AT motozawayasuki seatbeltpathsofthepregnantwomensittingintherearseatofamotorvehicle