拡張末期容積 end-diastohc volume
拡張終期容積
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- the 5th letter of the Roman alphabet (同)e
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In cardiovascular physiology, end-diastolic volume (EDV) is the volume of blood in the right and/or left ventricle at end load or filling in (diastole) or the amount of blood in the ventricles just before systole. Because greater EDVs cause greater distention of the ventricle, 'EDV is often used synonymously with preload, which refers to the length of the sarcomeres in cardiac muscle prior to contraction (systole). An increase in EDV increases the preload on the heart and, through the Frank-Starling mechanism of the heart, increases the amount of blood ejected from the ventricle during systole (stroke volume).
Contents
- 1 Parameters affecting EDV
- 2 Sample values
- 3 See also
- 4 References
Parameters affecting EDV
Because nearly two-thirds of the blood in the systemic circulation is stored in the venous system, end-diastolic volume is closely related to venous compliance.
- Increasing venous compliance elevates the capacitance of the veins, reducing venous return and therefore end-diastolic volume.
- Decreasing venous compliance has the opposite effect. For example, activation of the baroreceptor reflex (occurring, for instance, in acute hemorrhage) causes vasoconstriction, which decreases venous compliance, improves venous return, and therefore increases end-diastolic volume.
Sample values
The values below are for the left ventricle:
Measure
|
Typical value |
Normal range |
end-diastolic volume (EDV) |
120 mL[1][non-primary source needed] |
65–240 mL[1][non-primary source needed] |
end-systolic volume (ESV) |
50 mL[1][non-primary source needed] |
16–143 mL[1][non-primary source needed] |
stroke volume (SV) |
70 mL |
55–100 mL |
ejection fraction (Ef) |
58% |
55–70%[2] |
heart rate (HR) |
75 bpm |
60–100 bpm[3] |
cardiac output (CO) |
5.25 L/minute |
4.0–8.0 L/min[4] |
The right ventricular end-diastolic volume (RVEDV) ranges between 100 and 160 mL.[4] The right ventricular end-diastolic volume index (RVEDVI) is calculated by RVEDV/BSA and ranges between 60 and 100 mL/m2.[4]
See also
- End-systolic volume
- Stroke volume
References
- ^ a b c d Schlosser, Thomas; Pagonidis, Konstantin; Herborn, Christoph U.; Hunold, Peter; Waltering, Kai-Uwe; Lauenstein, Thomas C.; Barkhausen, Jörg (2005). "Assessment of Left Ventricular Parameters Using 16-MDCT and New Software for Endocardial and Epicardial Border Delineation". Am J Roentgenol 184 (3): 765–73. doi:10.2214/ajr.184.3.01840765. PMID 15728595. Values:
- End-diastolic volume (left ventricular) – average 118 and a range of 68 – 239mL and
- End-systolic volume (left ventricular) – average 50.1 and range, 16 – 143 mL:
- Also, ejection fraction was estimated in this study to be average 59.9% ± 14.4%; range, 18 – 76%, but secondary source (see above) is used in this article instead.
- ^ O'Connor, Simon (2009). Examination Medicine (The Examination). Edinburgh: Churchill Livingstone. p. 41. ISBN 0-7295-3911-3.
- ^ Normal ranges for heart rate are among the narrowest limits between bradycardia and tachycardia. See the Bradycardia and Tachycardia articles for more detailed limits.
- ^ a b c Edwards Lifesciences LLC > Normal Hemodynamic Parameters – Adult 2009
UpToDate Contents
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- Carlsson M, Heiberg E, Toger J, Arheden H.Source1Department of Clinical Physiology.
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- We aimed to quantify kinetic energy (KE) during the entire cardiac cycle of the left ventricle (LV) and right ventricle (RV) using 4D phase contrast (PC) magnetic resonance imaging (MRI). KE was quantified in healthy volunteers (n=9) using an in-house developed software. Mean KE through the cardiac
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- Circulation journal : official journal of the Japanese Circulation Society 75(2), 376-382, 2011-01-25
- … Summed stress score (SSS), summed difference score (SDS), poststress ejection fraction (EF) and resting end-diastolic volume (EDV) were calculated. … P<0.001), resting EDV (Wald 53.8; …
- NAID 10027427099
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★リンクテーブル★
[★]
- 英
- ejection fraction, EF
- 関
- 心不全、左室内径短縮率
- 左室:左室駆出率 = SV / LVEDV x 100 = ( LVEDV - LVESV ) / LVEDV x 100
正常値
ICU.222
- 右室EF:0.50-0.55
- 左室EF:0.40-0.50
YN.C-78
疾患との関連
評価方法
- 左室EF:経胸壁心エコー図検査
- 右室EF、:経食道心エコー法
[★]
- 同
- end-diastolic volume, EDVI
- 同
- EDV, end-diastohc volume
[★]
- 英
- end-diastolic volume, EDV
- 同
- 拡張末期容量
- 関
[★]
- 同
- EDVI, 拡張末期容積
- 同
- EDV
[★]
- 英
- end diastolic volume, EDV
[★]
- 同
- left ventricular end-diastolic volume, 左室拡張末期容積
左室収縮期容積 left ventricular end-diastolic volume
redirect 左室拡張末期容積
- 関
- left ventricular end-diastolic volume
[★]
- 同
- end-diastolic volume, 拡張末期容積
[★]
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