@article{oai:shiga-med.repo.nii.ac.jp:00004083,
 author = {田中, 克典 and 本澤, 養樹 and 髙橋, 健太郎 and 槇, 徹雄 and 一杉, 正仁 and TANAKA, Katsunori and MOTOZAWA, Yasuki and TAKAHASHI, Kentaro and MAKI, Tetsuo and HITOSUGI, Masahito},
 issue = {1},
 journal = {Healthcare (Switzerland)},
 month = {Dec},
 note = {pdf, We clarified factors affecting the severity of placental abruption in motor vehicle collisions by quantitively analyzing the area of placental abruption in a numerical simulation of an unrestrained pregnant vehicle driver at collision velocities of 3 and 6 m/s. For the simulation, we constructed a novel finite element model of a small 30-week pregnant woman, which was validated anthropometrically using computed tomography data and biomechanically using previous examinations of post-mortem human subjects. In the simulation, stress in the elements of the utero–placental interface was computed, and those elements exceeding a failure criterion were considered to be abrupted. It was found that a doubling of the collision velocity increased the area of placental abruption 10-fold, and the abruption area was approximately 20% for a collision velocity of 6 m/s, which is lower than the speed limit for general roads. This result implies that even low-speed vehicle collisions have negative maternal and fetal outcomes owing to placental abruption without a seatbelt restraint. Additionally, contact to the abdomen, 30 mm below the umbilicus, led to a larger placental abruption area than contact at the umbilicus level when the placenta was located at the uterus fundus. The results support that a reduction in the collision speed and seatbelt restraint at a suitable position are important to decrease the placental abruption area and therefore protect a pregnant woman and her fetus in a motor vehicle collision., Journal Article},
 title = {Factors Affecting the Severity of Placental Abruption in Pregnant Vehicle Drivers : Analysis with a Novel Finite Element Model},
 volume = {10},
 year = {2021}
}