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Doctor insights on: Causes Of Stroke Volume

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What does decrease in stroke volume implies?

What does decrease in stroke volume implies?

Weak heart: Decrease in stroke volume means the heart muscle is not contracting as strongly as it should. This may result in thrombus formation and brain stroke. Check with your md on this. ...Read more

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An increased stroke volume would be a consequence of what?

Stroke volume: Stroke volume is the amount of blood pumped by the heart with each beat. This could be due to increased fluid volume in the body, fever and tachycardia in the face of normal blood volume, increased catecholamine state is another. There are other possibilities also. ...Read more

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Why does a higher stroke volume reduce angina ?

Why does a higher stroke volume reduce angina ?

Stroke volume: Stroke volume is the amount of blood ejected from the heart with each beat. A higher stroke volume implies increased cardiac contractility which means more oxygen demands by the heart muscle. In the presence of significant coronary artery disease, this increased contractility will increase, not reduce, angina. ...Read more

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Why must stroke volume for both ventricles be the same?

Why must stroke volume for both ventricles be the same?

Stroke volume (SV): The left and right sided chambers of your heart are like 2 pumps. All the volume from the first pump should be equal to what's used in the second. Too little blood=anemia, Smaller SV in one pump suggests a leak (shunt) versus bad pump (heart failure). Your body is always fighting to maintain a balance. When balance is disrupted, that is often when you feel ill. ...Read more

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Why must the stroke volume for each ventricle be the same?

Why must the stroke volume for each ventricle be the same?

Circuits in series: Since the left (systemic) and right (pulmonary) circuits are in series with each other, the blood that each ventricle pumps is the blood that has just come from the other ventricle! now, this is not always true in congenital heart disease where there are connections (shunts) between the two systems. ...Read more

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How are stroke volume and cardiac output distinguished from each other?

How are stroke volume and cardiac output distinguished from each other?

Cardiac output: Stroke volume times heart rate equals cardiac output. Stroke volume relates to myocardial contractility, vascular resistance, vascular volume, anemia and metabolic state. There are subcomponents to all of these. ...Read more

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How much would 40 minutes a day exercise increase the overall stroke volume of the heart in 3 months in a male 22?

Stroke volume: 3 months of aerobic exercise as described might make no change in stroke volume, if it did it would be subtle. It takes a long time to begin to see benefits from exercise and usually at least 6 weeks to see anything. Stroke volume would likely take 6mo to a year to measure something real. ...Read more

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I have an EF of 48%, and a stroke volume of 46.9 mL, and my cardiologist isn't concerned. I'm 25 years old. I'm super worried, what should I do?

I have an EF of 48%, and a stroke volume of 46.9 mL, and my cardiologist isn't concerned. I'm 25 years old. I'm super worried, what should I do?

Re-test: For an otherwise healthy young person an EF of 48% is not Normal. Not sure by what imaging modality that was quantified, but it ought to be re-done, preferably without radiation exposure. See another cardiologist, get a second opinion, perhaps at an academic center. ...Read more

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In what way damage to the conduction system of the heart impact stroke volume?

Lower stroke volume: If part of your heart are not properly innervated, the muscle will not contract as needed and the stroke volume may diminish. Uneven contraction may lead to thrombus formation and potentially stroke, check with your cardiologist. ...Read more

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Which value of cardiac output is considered high?My stroke volume 90ml, by 75 bpm, that means cardiac out:6, 7l/min;cardiac index would be 3, 5l/min*m2.Tx

Which value of cardiac output is considered high?My stroke volume 90ml, by 75 bpm, that means cardiac out:6, 7l/min;cardiac index would be 3, 5l/min*m2.Tx

Cardiac Output: Numbers such as you list can be normal especially in a smoker. Numbers alone without clinical correlation don't necessarily mean a lot. You should discuss these data with the physician(s) who know you and your specifics. ...Read more

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EF is 48% without dilation and normal dimensions. Stroke volume low. How possible with normal structure? Recheck confirmed it. I'm 25, confused.

EF is 48% without dilation and normal dimensions. Stroke volume low. How possible with normal structure?  Recheck confirmed it. I'm 25, confused.

LVEF is 48% without dilation: Yes , the LVEF is diminished, normal is 55-70%. Did you drink in the past?, smoker?, what is your weight, and your height, have you had multiple viral infections, family history of heart failure ( mother, father, uncles, grand-parents, brothers etc), The condition is called "cardiomyopathy". The different types of the disease have different causes, signs and symptoms, and outcomes. Cardiomyopathy can be acquired or inherited. "Acquired" means you aren't born with the disease but you develop it due to another disease, condition, or factor. "Inherited" means your parents passed the gene for the disease on to you. In many cases, the cause of cardiomyopathy isn't known. Cardiomyopathy can affect people of all ages. However, certain age groups are more likely to have certain types of cardiomyopathy. This document focuses on cardiomyopathy in adults. Some people who have cardiomyopathy have no signs or symptoms and need no treatment. For other people, the disease develops rapidly, symptoms are severe, and serious complications occur. Treatments for cardiomyopathy include lifestyle changes, medicines, surgery, implanted devices to correct arrhythmias, and a nonsurgical procedure. These treatments can control symptoms, reduce complications, and stop the disease from getting worse. Dilated cardiomyopathy is the most common type of the disease. It mostly occurs in adults aged 20 to 60. Men are more likely than women to have this type of cardiomyopathy. Dilated cardiomyopathy affects the heart's ventricles and atria. These are the lower and upper chambers of the heart, respectively. The disease often starts in the left ventricle, the heart's main pumping chamber. The heart muscle begins to dilate (stretch and become thinner). This causes the inside of the chamber to enlarge. The problem often spreads to the right ventricle and then to the atria as the disease gets worse. When the chambers dilate, the heart muscle doesn't contract normally. Also, the heart can't pump blood very well. Over time, the heart becomes weaker and heart failure can occur. Symptoms of heart failure include fatigue (tiredness); swelling of the ankles, feet, legs, and abdomen; and shortness of breath. Dilated cardiomyopathy also can lead to heart valve problems, arrhythmias, and blood clots in the heart. ...Read more

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Is my cardiac output too high? Results from echo:stroke volume 100ml, by 70 bpm, that means cardiac out:7l/min; cardiac index would be 3, 57l/min*m2.

Is my cardiac output too high? Results from echo:stroke volume 100ml, by 70 bpm, that means cardiac out:7l/min; cardiac index would be 3, 57l/min*m2.

Cardiac output: Your measured cardiac output is high for someone at rest, but not at all if you do any exertion or are under stress. Co can reach 15 l/min in healthy men without any difficulty. ...Read more