❤️ 每搏输出量计算器（SV、心指数、搏出指数、射血分数）Stroke Volume Calculator (SV, Cardiac Index, Stroke Volume Index, Ejection Fraction)
三种方法求每搏输出量 SV：心输出量 ÷ 心率；舒张末期容积 − 收缩末期容积（同时得到射血分数 EF）；或超声多普勒法 LVOT 面积 × VTI。输入身高体重可求体表面积和搏出指数、心指数。仅供学习参考。本地处理。Three ways to get stroke volume: cardiac output ÷ heart rate; end-diastolic minus end-systolic volume (which also gives the ejection fraction); or the Doppler method, LVOT area × VTI. Add height and weight for body surface area, stroke volume index and cardiac index. For learning only. Processed locally.
使用说明与常见问题How-to & FAQ
「每搏输出量计算器（SV、心指数、搏出指数、射血分数）」是什么？What is the Stroke Volume Calculator (SV, Cardiac Index, Stroke Volume Index, Ejection Fraction) tool?
三种方法求每搏输出量 SV：心输出量 ÷ 心率；舒张末期容积 − 收缩末期容积（同时得到射血分数 EF）；或超声多普勒法 LVOT 面积 × VTI。输入身高体重可求体表面积和搏出指数、心指数。仅供学习参考。本地处理。Three ways to get stroke volume: cardiac output ÷ heart rate; end-diastolic minus end-systolic volume (which also gives the ejection fraction); or the Doppler method, LVOT area × VTI. Add height and weight for body surface area, stroke volume index and cardiac index. For learning only. Processed locally.
如何使用「每搏输出量计算器（SV、心指数、搏出指数、射血分数）」？How do I use the Stroke Volume Calculator (SV, Cardiac Index, Stroke Volume Index, Ejection Fraction) tool?
在「每搏输出量计算器（SV、心指数、搏出指数、射血分数）」中，填写「方法」、「心输出 mL/min」、「心率」、「舒张末期容积 EDV mL」、「收缩末期容积 ESV mL」等参数，结果会随输入实时计算并显示在下方。In the Stroke Volume Calculator (SV, Cardiac Index, Stroke Volume Index, Ejection Fraction): Fill in "Method", "Cardiac output mL/min", "Heart rate", "End-diastolic volume EDV mL", "End-systolic volume ESV mL"; results are recalculated instantly as you type.
每搏输出量是什么？What is stroke volume?
心脏每跳一次左心室射出的血量。成人静息时通常约 60–100 mL。SV = 心输出量 ÷ 心率，例如 5000 mL/min ÷ 70 次/分 ≈ 71 mL。The volume of blood the left ventricle pumps with each beat, usually about 60–100 mL in a resting adult. SV = cardiac output ÷ heart rate, so 5000 mL/min ÷ 70 bpm ≈ 71 mL.
射血分数怎么算？How is ejection fraction calculated?
EF = (EDV − ESV) ÷ EDV × 100 %。例如 EDV 120 mL、ESV 50 mL，SV = 70 mL，EF ≈ 58 %。正常约 52–72 %，需结合临床判断。EF = (EDV − ESV) ÷ EDV × 100 %. With EDV 120 mL and ESV 50 mL, SV = 70 mL and EF ≈ 58 %. Normal is about 52–72 %, interpreted clinically.
多普勒法是什么？What is the Doppler method?
超声心动图常用：SV = LVOT 截面积 (π × (直径/2)²) × 速度时间积分 VTI。直径测量误差会被平方放大。本页仅供学习，不能替代医疗评估。Common in echocardiography: SV = LVOT area (π × (diameter/2)²) × velocity-time integral. Errors in the diameter are squared. This page is for learning and does not replace medical assessment.
哪些输入会被检查？Which inputs are validated?
「每搏输出量计算器（SV、心指数、搏出指数、射血分数）」会检查这些输入——「心输出 mL/min」、「舒张末期容积 EDV mL」、「LVOT 直径 cm」、「LVOT VTI cm」：所选方式用到时必须填写，须大于 0；「心率」：须大于 0；「收缩末期容积 ESV mL」：所选方式用到时必须填写，不能为负数；「身高 cm（可选）」、「体重 kg（可选）」：不能为负数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Stroke Volume Calculator (SV, Cardiac Index, Stroke Volume Index, Ejection Fraction) checks its inputs — "Cardiac output mL/min", "End-diastolic volume EDV mL", "LVOT diameter cm", "LVOT VTI cm": required when the chosen option uses it, must be greater than 0; "Heart rate": must be greater than 0; "End-systolic volume ESV mL": required when the chosen option uses it, cannot be negative; "Height cm (optional)", "Weight kg (optional)": cannot be negative; numbers above 10¹⁵ in absolute value are rejected too.…
有哪些选项可以调整？What options can I adjust?
「每搏输出量计算器（SV、心指数、搏出指数、射血分数）」的设置：「方法」可选 心输出 ÷ 心率、EDV − ESV、LVOT 直径与 VTI（默认 心输出 ÷ 心率）；「心输出 mL/min」默认 5000；「心率」默认 70；「舒张末期容积 EDV mL」默认 120；「收缩末期容积 ESV mL」默认 50；「LVOT 直径 cm」默认 2.0；「LVOT VTI cm」默认 20；「身高 cm（可选）」可留空；「体重 kg（可选）」可留空。每次生成结果都按当前设置处理。Settings in the Stroke Volume Calculator (SV, Cardiac Index, Stroke Volume Index, Ejection Fraction) — "Method": Cardiac output ÷ heart rate, EDV − ESV, LVOT diameter and VTI (default Cardiac output ÷ heart rate); "Cardiac output mL/min" default 5000; "Heart rate" default 70; "End-diastolic volume EDV mL" default 120; "End-systolic volume ESV mL" default 50; "LVOT diameter cm" default 2.0; "LVOT VTI cm" default 20; "Height cm (optional)" optional; "Weight kg (optional)" optional. The result always uses the current…
结果可以代替医生的建议吗？Can this replace medical advice?
不能。「每搏输出量计算器（SV、心指数、搏出指数、射血分数）」基于常用公式给出估算，个体差异较大，如有健康问题请咨询医生或专业人士。No. The Stroke Volume Calculator (SV, Cardiac Index, Stroke Volume Index, Ejection Fraction) gives estimates from common formulas; individuals differ, so consult a doctor or professional for health decisions.
「每搏输出量计算器（SV、心指数、搏出指数、射血分数）」免费吗？需要注册吗？Is the Stroke Volume Calculator (SV, Cardiac Index, Stroke Volume Index, Ejection Fraction) free? Do I need an account?
「每搏输出量计算器（SV、心指数、搏出指数、射血分数）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Stroke Volume Calculator (SV, Cardiac Index, Stroke Volume Index, Ejection Fraction) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.