Publications by authors named "Hideo Kamata"

Objective: The objective was to study the relationship between a decrease in gross fetal movement during maternal night sleep counted by an objective method and abnormal perinatal outcomes.

Methods: This was a prospective cohort study. A total of 470 pregnant women recorded fetal movement with the fetal movement acceleration measurement recorder weekly after 28 weeks.

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Article Synopsis
  • A study was conducted to determine if assisted reproductive technology (ART) impacts fetal movement by comparing 65 women who conceived using ART and 211 women who conceived naturally.
  • Fetal movements were recorded weekly after 28 weeks of pregnancy using a specific measurement device, looking at both active movements and periods without movement.
  • The results showed no significant differences in fetal movement parameters or no fetal movement periods between the ART and control groups, indicating that ART does not affect gross fetal movement.
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Placenta accreta is a high-risk condition causing obstetric crisis and hemorrhage; however, its pathogenesis remains unknown. We aimed to identify the factors contributing to trophoblast invasiveness and angiogenic potential, which in turn drive the pathogenesis of placenta accreta. We focused on the transforming growth factor (TGF)-β1-Smad pathway and investigated the intrinsic relationship between the time- and dose-dependent inhibition of the ubiquitinating enzyme UCHL5 using bAP15, a deubiquitinase inhibitor, after TGF-β1 stimulation and the invasive and angiogenic potential of two cell lines, gestational choriocarcinoma cell line JEG-3 and trophoblast cell line HTR-8/SVneo.

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Background: There is no consensus on the relationship between maternal glucose levels and fetal movements.

Objective: This study aimed to investigate the correlation between gross fetal movements and maternal glucose levels in the hours around food intake.

Study Design: This was an observational study with 2 newly developed technologies, which were a glucose monitoring system and a fetal movement acceleration measurement recorder.

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Aim: To investigate the effect of ritodrine hydrochloride infusion on fetal movement.

Method: We gathered 20 pregnant women who received ritodrine hydrochloride infusion as the treated group, and 147 pregnant women who did not as the control group. All women recorded gross fetal movement with the fetal movement acceleration measurement recorder after 28 gestational weeks.

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We used the fetal movement acceleration measurement recorder to count gross fetal movement in two fetuses with gastroschisis. In conclusion, both fetuses moved as much as normal fetuses, which suggested that normal fetal movement could indicate reassuring status also in fetuses with malformation when they have normal neurological developments.

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The development of the fetal movement acceleration measurement (FMAM) recorder has enabled the accurate counting of gross fetal movements. The aim of the study was to investigate whether gross fetal movement is related to a newborn's size. A total of 90 pregnant women who delivered singleton infant at term were recruited.

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Introduction: The fetal movement acceleration measurement (FMAM) recorder has made it possible to count gross fetal movements over many hours. Our purpose was to examine the relationship between umbilical cord length and fetal movements as counted by the FMAM recorder.

Methods: Sixty-two pregnant women recorded fetal movements weekly from 28 weeks to term.

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Our purpose was to clarify whether small-for-gestational (SGA) infants is associated with a decrease in fetal movements (FMs) even in the absence of hypoxia. We used a fetal movement acceleration measurement (FMAM) recorder, which enabled counting gross FMs for hours at a time.1) Parameters of FMs for 13 women who delivered SGA infants were plotted over normal reference value curves made from 64 normal pregnant women in another study.

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BackgroundA newly developed fetal movement acceleration measurement recorder has made it possible to count gross movements for hours. The purpose of this study was to determine the normal reference values for such movements.MethodsOne hundred and six pregnant women recorded fetal movements by themselves when they slept at home weekly from 28 weeks to term.

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Objective: To clarify the degree of fetal hiccup occurrence by using a fetal movement acceleration measurement recorder.

Methods: A total of 23 pregnant women recorded fetal movements weekly or biweekly between 28 and 39 gestational weeks at home with the recorder. Fetal hiccups were defined as regular sharp oscillations - which occurred at 2-4 second intervals, more than 15 times per minute - on the maternal abdomen.

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Purpose: To investigate changes in uterine flexion after cesarean delivery in comparison with vaginal delivery, and their relationship with the presence of deficient cesarean section scars.

Methods: In 147 women who had a vaginal delivery and 101 women who had a cesarean delivery, transvaginal ultrasonographic photographs of the uterus were obtained at the first trimester of pregnancy and at 1 month postpartum, and they were reviewed to determine changes in uterine flexion. The presence of a deficient cesarean section scar was also reviewed in women with a cesarean section.

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Fetal movement is an important biological index of fetal well-being. Since 2008, we have been developing an original capacitive acceleration sensor and device that a pregnant woman can easily use to record fetal movement by herself at home during sleep. In this study, we report a newly developed automated software system for analyzing recorded fetal movement.

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A fetal movement acceleration measurement (FMAM) recorder was developed for home monitoring of fetal movements. We provided a 32-year-old pregnant woman with the FMAM recorder to home monitor fetal movements, thereby self-recording decreased fetal movements at 30 weeks' gestation. On routine checkup, a non-stress test revealed scant fetal heart rate accelerations.

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Objective: Fetal Movement Acceleration Measurement (FMAM) recorder was developed to facilitate gross fetal movement counting. The aim was to assess its reliability.

Methods: Using the recorder, six pregnant women recorded fetal movements by themselves when they slept at their home weekly from 30 weeks to term.

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Fetal movement is one index of fetal well-being. We designed and built a new recorder based on fetal movement acceleration measurement (FMAM). The FMAM recorder has a newly developed, capacitive acceleration sensor that can detect the oscillations of the maternal abdominal wall caused by fetal movements.

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