Understanding the stroke volume calculator
A stroke volume calculator is a very useful tool that will allow you to see how efficiently your heart can pump blood per beat. This stroke volume calculator conveniently shows you what your stroke volume index and cardiac index is. The meaning of these values will be explained later in this article.
For now, you simply need to know that a stroke volume calculator allows you to have a better understanding of your heart’s status quo.
Looking at the stroke volume calculator at first glance, you’ll notice the three main values needed: cardiac output, heart rate, and stroke volume. Below, I’ll discuss what each of these values represent, as well as how to acquire them so you can input them into the stroke volume calculator.
Cardiac output is the amount of blood pumped by the heart per minute. This value can will depend on several different variables such as what your current cholesterol levels are, your blood pressure, and much more. If you’re unsure of what your cardiac output is, you should try using our interactive cardiac output calculator to give you the accurate results you need to find out your stroke volume index.
In this stroke volume calculator, the heart rate value is in beats per minute (bpm). Knowing your heart rate is an essential component to getting accurate results on the stroke volume calculator. You can easily find out your heart rate by lightly pressing your index and middle finger over the blood vessels on the radial side of your wrist or on the carotid artery of your neck (on the side of your windpipe).
Stroke volume is the volume of blood pumped from the left ventricle in the heart per beat. This is especially important as it is the left ventricle that pumps oxygenated blood out of the heart toward the rest of the body to nourish and replenish working tissues. Essentially, the stronger and thicker the left ventricle is, the greater force it will be able to generate as it pumps blood throughout the body.
What is a cardiac index?
Cardiac index is an assessment of the cardiac output value that is based on the patient’s size . This is a very important value to take into consideration due to the fact that people come in all different shapes and sizes, which may skew the results. Having a cardiac index in the stroke volume calculator gives you a greater level of accuracy and knowledge about your heart’s status quo.
What is a stroke volume index?
At the very bottom of the stroke volume calculator you’ll see the stroke volume index. The stroke volume index is the volume of blood pumped by the heart with each beat divided by the body surface area. This allows direct comparison of the stroke volume index of large and small patients .
1. “Cardiac Output and Cardiac Index – What’s the Difference?”. Wolters Kluwer. http://www.nursingcenter.com/ncblog/december-2016-(1)/cardiac-output-and-cardiac-index-%E2%80%93-what-s-the-diff. Accessed on Aug 2017.
2. “Stroke Volume Index”. University Health Network. http://pie.med.utoronto.ca/CA/CA_content/CA_cardiacPhys_strokeVolume.html. Accessed on Aug 2017.
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