2009 Fiscal Year Final Research Report
How does the relaxation velocity and/or the compliance of the left ventricle adjust to the increasing exercise intensity?
| Project/Area Number |
19500429
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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 |
Medical systems
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| Research Institution | Himeji Dokkyo University |
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Principal Investigator |
IZUMI Tadafumi Himeji Dokkyo University, 医療保健学部, 教授 (40278990)
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| Co-Investigator(Kenkyū-buntansha) |
SUGAWARA Motoaki 姫路獨協大学, 医療保健学部, 教授 (60010914)
HANYA Shizuo 姫路獨協大学, 医療保健学部, 教授 (80075522)
TANAKA Midori 姫路獨協大学, 医療保健学部, 講師 (50441332)
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| Research Collaborator |
SUMINOE Isao 姫路赤十字病院, 検査技術部
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| Project Period (FY) |
2007 – 2009
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| Keywords | 拡張不全型心不全 / 運動耐容能 / 超音波医科学 / 左室拡張能 / パルスドップラ法 / 組織ドップラ法 / ランプ負荷 |
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| Research Abstract |
The responses of the left ventricular dilatation to the gradual increase of the exercise intensity in the normal subjects were investigated by using the ultrasound cardiogram. As a result, though the amplitude of the E wave (early diastolic flow) and the A wave (atrial contraction flow) in the transmitral flow pattern were increased, Em value, i.e.mitral annulus velocity was increased and E/Em value was invariable. The excellent responses of the left ventricular dilatation during the exercise might mean the appropriate increasing of the cardiac output in the normal subjects. These results suggests the possibility that the above-mentioned indicators may describe left ventricular diastolic performance during the exercise.
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