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A 48-year-old member asked:

What's cardiac output?

2 doctor answers13 doctors weighed in
Dr. Francis Uricchio
Cardiology 40 years experience
Heart pump volume: The cardiac output is the volume of blood per minute pumped by the heart. Cardiac output is equal to heart rate multiplied by stroke volume (the volume of blood ejected with each heartbeat).
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Nassir Azimi
Interventional Cardiology 25 years experience
Amound of blood: The cardiac output is the amount of blood cycled through the heart each minute and is usually reported as litres per minute. It correlates with weight and to standardize the cardiac output it is divided by the body surface area in meters squared which is the cardiac index.
Created for people with ongoing healthcare needs but benefits everyone.

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Canada
A 37-year-old female asked:

Is cardiac output the same as ef%?

2 doctor answers9 doctors weighed in
Dr. Bennett Werner
Cardiology 46 years experience
No : Ef is the percentage of blood ejected with each heart beat. >55% is normal. Cardiac output is the amount of blood in ccs or milliliters ejected per minute and is dependent on heart rate and stroke volume (the volume of blood pumped in a single beat) co depends on body size but a typical measurement is in the range of 5 liters per minute.
Created for people with ongoing healthcare needs but benefits everyone.
A 30-year-old member asked:

How do you ?Measure cardiac output?

1 doctor answer1 doctor weighed in
Dr. Mark Rasak
Cardiology 35 years experience
Several: Can use 2d echo, mra of heart, and right heart cath. Cardiac output is the measure of how many liters per minute the blood is being circulated in the body.
Created for people with ongoing healthcare needs but benefits everyone.
CA
A 23-year-old member asked:

What is cardiac output influenced by?

2 doctor answers6 doctors weighed in
Dr. Charles Jost
Cardiology 38 years experience
Disease & more: Congenital heart disease, vitamin b1 defiency, anemia, thyroid problem, renal disease, liver disease, brain disease, vascular disease, blood disease, atherosclerosis, valve disease - these are the biggest influencers of cardiac output.
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old member asked:

What influences cardiac output?

2 doctor answers5 doctors weighed in
Dr. Francis Uricchio
Cardiology 40 years experience
Multiple things: Cardiac output is the product of heart rate in stroke volume. Thus, an increase in heart rate results in an increase in cardiac output. Stroke volume can be affected by changes in preload, afterload, and contractility (strength of contraction). Preload is "priming the pump". Afterload is the resistance to ejection during systole (contraction).
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old member asked:

What are the components of cardiac output?

2 doctor answers6 doctors weighed in
Dr. Samuel Hahn
Cardiology 30 years experience
HR x SV: Cardiac output in its most simple form is heart rate x stroke volume.
Created for people with ongoing healthcare needs but benefits everyone.

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Last updated Mar 4, 2019

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