2011 Fiscal Year Final Research Report
Evaluation of fetal cardiac function by measurement of systolic time intervals
| Project/Area Number |
22791033
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Embryonic/Neonatal medicine
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| Research Institution | Kyushu University |
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Principal Investigator |
YUMOTO Yasuo 九州大学, 大学病院, 助教 (00452772)
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| Project Period (FY) |
2010 – 2011
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| Keywords | 胎児医学 / 循環器 / 超音波医学 / 生理学 |
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| Research Abstract |
STI was calculated in the left ventricle of 93 normal fetuses at 20-40 weeks gestation. The isovolumetric contraction time(ICT), ejection time(ET) and isovolumetric relaxation time(IRT) were measured using Pulse Doppler signals of the opening and closing of the mitral and aortic valve. Throughout gestation, ICT and ET remained constant. IRT slightly increased(IRT=39+ 0. 36×gestational age). The trend of ICT, ET and IRT during normal pregnancy was shown by interval time of the opening and closing of the mitral and aortic valves using a Pulse Doppler cardiography system.
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