| Project/Area Number |
14571049
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Embryonic/Neonatal medicine
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| Research Institution | Yamaguchi University |
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Principal Investigator |
SASE Masakatsu Yamaguchi University, Hospital, Associate Professor, 医学部附属病院, 助教授 (50243663)
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| Project Period (FY) |
2002 – 2004
|
| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2004: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2003: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2002: ¥700,000 (Direct Cost: ¥700,000)
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| Keywords | fetus / stomach / gastric emptying / peristalsis / human / human fetus / gastric peristalsis / circulation of amniotic fluid / ultrasound / gastric emptying cycle |
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| Research Abstract |
Gastric peristaltic waves were detected at 14 weeks of gestation with ultrasound. The frequency of gastric peristalsis was 2 to 3 times/min as same as adult. The grouped peristaltic waves were detected in all cases after 24 weeks of gestation. The mean duration of the grouped peristalsis was constant for about 15 min after 32 weeks of gestation. The ratio of the change in the gastric area increased after 24 weeks of gestation. It means that the ability of gastric contraction begins to increase at this stage in the human fetus.
Gastric emptying was detected as early as 12 weeks of gestation. The gastric emptying cycles before 24 weeks of gestation were scattered between 30 to 100 min, with low power. At 32 to 35 weeks of gestation, cycles were focused at 〜40 min with increased power.
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