Cardiac output is a measure of the amount of blood that is pumped by the heart in one minute. It is calculated by multiplying the heart rate by the stroke volume. Knowing your cardiac output can be important in diagnosing and treating certain medical conditions. In this article, we will discuss what cardiac output is, when you need to know it, decreased cardiac output symptoms, how to calculate it, what to expect during the test, what type of results you get and what they mean, some factors affecting cardiac output, and how to improve it.
What is Cardiac Output?
Cardiac output is a measure of the amount of blood that is pumped by the heart in one minute. It is calculated by multiplying the heart rate by the stroke volume. The heart rate is the number of times the heart beats per minute, and the stroke volume is the amount of blood that is pumped out of the heart with each beat. The normal range for cardiac output is 4-8 liters per minute.
When Do You Need to Know Cardiac Output?
Cardiac output is important in diagnosing and treating certain medical conditions, such as heart failure, shock, and arrhythmias. It can also be used to monitor the effectiveness of treatments for these conditions.
Decreased Cardiac Output Symptoms
Decreased cardiac output can cause symptoms such as fatigue, shortness of breath, lightheadedness, and chest pain. It can also lead to organ damage if left untreated.
How to Calculate Cardiac Output
Cardiac output is calculated by multiplying the heart rate by the stroke volume. The heart rate is the number of times the heart beats per minute, and the stroke volume is the amount of blood that is pumped out of the heart with each beat.
What to Expect During the Test
The test for measuring cardiac output is usually done in a hospital or clinic. You will be asked to lie down and a device will be placed on your chest to measure your heart rate and stroke volume. The test usually takes about 30 minutes.
What Type of Results Do You Get and What Do the Results Mean?
The results of the test will show your cardiac output in liters per minute. A normal range is 4-8 liters per minute. If your results are outside of this range, it may indicate a medical condition that needs to be treated.
Some Factors Affecting Cardiac Output
There are several factors that can affect cardiac output, including age, activity level, medications, and underlying medical conditions. It is important to talk to your doctor about any factors that may be affecting your cardiac output.
How to Improve Cardiac Output
Improving your cardiac output can be done by making lifestyle changes, such as exercising regularly, eating a healthy diet, and quitting smoking. Your doctor may also recommend medications or other treatments to help improve your cardiac output.
References
- American Heart Association. (2020). Cardiac Output. Retrieved from https://www.heart.org/en/health-topics/cardiac-output
- Mayo Clinic. (2020). Cardiac Output. Retrieved from https://www.mayoclinic.org/tests-procedures/cardiac-output/about/pac-20384590
- MedlinePlus. (2020). Cardiac Output. Retrieved from https://medlineplus.gov/ency/article/003890.htm
Keywords: cardiac output, heart rate, stroke volume, symptoms, test, results, factors, improve