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Doctor insights on: Can You Define Cardiac Output And Ejection Fraction

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I have congestive heart failure with a 30% ejection fraction, hypertrophic cardiomyopathy , and left bundle branch block is it safe for me to fly?

I have  congestive heart failure with a 30% ejection fraction, hypertrophic cardiomyopathy , and left bundle branch block is it safe for me to fly?

Depends: It depends on your overall health. Do you have an icd, are you on daily oxygen, daily medications, can you sit for exended lengths of time, how long is the flight? Commercial airlines have cabin pressures set to about 7000ft. So if you can tolerate that altitude (denver is about 5600ft), air travel may be ok. Discuss with your doctor. Tsa will need to know if you have an icd. ...Read more

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Dr. Cynthia Archer
917 doctors shared insights

Cardiac Output (Definition)

Cardiac output is a measurement of the amount of blood a person's heart can pump out during a set amount of time. The measurements help doctors figure out how strong or weak ...Read more


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Resting HR 120-160 found in notes I also have Left ventricular ejection fraction 52% been passing out a lot should I be worried/is this the cause?

Unfortunately yes: You could be having a dangerous heart rhythm, leading to the passing out. The ejection fraction of 52% is still within the normal range; however, you are tachycardic at baseline, and the fast heart rate may overestimate your true ejection fraction as well as lead to heart damage. If you pass out again, I recommend calling 911, otherwise, see cardiologist ASAP. ...Read more

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Can you define cardiac output and ejection fraction?

Can you define cardiac output and ejection fraction?

Related: Cardiac output is the amount of blood pumped out by heart in each minute (typically around five liters per minute). Ejection fraction is the fraction of blood that heart recieves in each heart beat that is pumped out (typically 55-65% being normal). ...Read more

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Does anyone know about interpreting cardiac output and ejection fraction?

Does anyone know about interpreting cardiac output and ejection fraction?

I hope so!: It's part of what cardiologists do for a living. Ejection fraction is the percentage change in ventricular volume in one beat. 55% or better is normal but >75% suggests a hyperdynamic state which may be physiologic or pathologic. Cardiac output is the volume of blood (in liters per minute) that the heart pumps. Co is the product of stroke volume (blood in ccs per beat) x the heart rate (bpm). ...Read more

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Would low cardiac output show up on an echo? I seem to have the symptoms but echo was fine. Cannot find ejection fraction listed, though.

Cardiac output: If the echo was "fine" then one assumes a normal ejection fraction; there is no generally accepted echo technique to estimate low cardiac output ;with a structurally normal heart it is highly unlikely in absence of other comorbidity to sustain a low CO stete ...Read more

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If left ejection fraction is maintained in diastolic heart failure, why is the cardiac output decreased?

If left ejection fraction is maintained in diastolic heart failure, why is the cardiac output decreased?

Think stiffness: In diastolic dysfunction, the heart muscle tends to be stiff, so that it doesn't "relax" well and fill with blood. So even if the heart can pump blood forward OK, if it doesn't fill up appropriately, then it won't function optimally ... ...Read more

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35-40% cardiac ejection fraction during pregnancy. 11weeks. How serious is this? What shld I do? Do I need to restrict activities, etc?

35-40% cardiac ejection fraction during pregnancy. 11weeks. How serious is this? What shld I do? Do I need to restrict activities, etc?

Important Info: It is important to know if there is history of a depressed EF. One might think that this could be peripartum cardiomyopathy but this usually presents in the final weeks of pregnancy or the week after that. This does not mean that could not happen in the first trimester but it would be unusual. It would be important to rule out any type of congenital disorder in the echocardiogram. ...Read more

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Can ejection fraction of 35% after heart attack... In general be improved by cardiac excersize, or meds only. Is ef based only on amt of damage?

Can ejection fraction of 35% after heart attack... In general be improved by cardiac excersize, or meds only. Is ef based only on amt of damage?

Exercise,time: In general, there will be some improvement in ef over the 6-8 week following a heart attack. This is due to some shrinkage of the scar, and compensation by the undamaged part of the heart. Recovery will be improved with regular aerobic exercise, such as in a cardiac rehab program. Medications will definitely also help the process, and are a recommended part of the treatment. ...Read more

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Ejection Fraction (Definition)

It is a measurement of hearts efficiency.That is the proportion of blood that is pumped from the left ventricle with each heart beat normal ejection fraction is ...Read more


Dr. Warren Foster
5 doctors shared insights

Cardiac (Definition)

Cardiac translates literally to "heart, " and any place the term is seen, such ...Read more