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How Do Potassium Levels Affect Cardiac Output
Not directly: Cardiac output is the amount of blood flow generated by the heart over a given time frame. Potassium is a critical electrolyte for body health and cardiac function, especially its rhythm. Although high or low potassium levels can create major, potentially fatal, irregularities in the heart rhythm, those levels do not directly affect the cardiac output per se. ...Read more
5 liters/min: A typical cardiac output is approximately 5 l per minute. This can vary with the size of the patient with a larger patient having larger cardiac output. When the cardiac output is normalized for the size of the patient, this is called the cardiac index. A typical cardiac index would be 2.5. A number of medical conditions, such as fever or anemia, can increase the cardiac output. ...Read more
My potassium, serum level was marked as low at (3.5.) I have a cardiac arrhythmia. Can this level potassium worsen it?
"Normal lab values": A value of 3.5 is "low normal". If there is a concern for cardiac rhythm disturbances a value of 4.0 is preferred. Below 3.5 increases risk of arrhythmia. ...Read more
If someone goes into cardiac arrest from extremely low potassium blood level. Would the defibrillator work? Or do they need the potassium
Cardiac arrest?: Defibrillator r used in case of emergency to treat a cardiac arrest but it is important to check the reasons for the arrest and correct any lab abnormality. ...Read more
Cardiac output: Is stroke volume times heart rate. If stroke volume goes down more than heart rate goes up, cardiac output won't increase. Stroke volume depends on preload (filling of the heart), afterload (resistance to flow), and contractility (how much the heart pumps for how much it is filled. For instance, if the heart rate goes up but the the heart doesn't have time to fill, output won't increase. ...Read more
Low blood pressure: Cardiac output is related to the heart rate, and volume of blood the heart can pump with each heart beat. A low cardiac output occurs when the pump function of the heart is compromised by an event such as a heart attack or when the blood volume is reduced by and event such as dehydration, or bleeding. ...Read more
Cardiac output: In strict physiologic terms, cardiac output is determined by something called stroke volume and heart rate. Heart rate is self-explanatory. Stroke volume is the amount of blood that the heart pumps out with each beat. This in turn is dependent on blood pressure, total blood volume, and how strong the heart contracts. ...Read more
In general four: Cardiac output is influence by the amount of blood the heart recieves, the resistance against which the blood is ejected, the strength of contraction and the heart rate. For ex. CO increases with heart rate, increase in blood volume, increase in cardiac contraction and less resistance to ejection because of lower peripheral resistance. Clinical conditions that affects any 4 will alter cardiac output ...Read more
CO=need: Your cardiac output will match your need. The difference between an athlete and a non-athlete is that the athlete can increase their co and reduce their need at peak exertion through conditioning and the rest of us can't. Think of a race car and an oldsmobile (both 8 cyl) traveling at 25 mph. They both use the same amount of gas but the former can go 200 mph, while the latter is sputtering at 100. ...Read more
Low cardiac output: Cardiac output depends on heart rate and stoke volume. Therefore, the cardiac output increases when heart rate goes up in normal heart. However, when the heart is failing the stroke volume is lower as well as the cardiac out which is called heart failure. Sometimes, heart failure could occur when cardiac output is high due to other medical problems such as a severe anemia, hyperthyroidism, etc ...Read more
Generally: Increases due to less resistance.Get a more detailed answer ›
Two ways: It can cause the heart muscle to get thick and stiff so that it does not relax and fill up with blood properly. It could also cause the heart muscle to become weak so that it does not squeeze or contract as forcefully. These are called diastolic dysfunction (too thick) or systolic dysfunction (weak and flabby). ...Read more
20: Around 20%. Can double after a meal. ...Read more
Hyperthyroidism: Hyperthyroidism is a excess metabolic state. If other systems are normal it will usually cause increased heart rate and cardiac output. In the face of a weak heart, it could be associated with decrease in cardiac output. Chronic hyperthyroidism can be associated with a cardiomyopathy causing decreased heart function. ...Read more
Related but not the: Same. Co is a mathematical calculation of the amount of blood pump by the left ventricle of your heart in one minute (stroke volume x hr). The ejection fraction is a measurement of the percentage of blood leaving your left ventricle every time contract. Can be measure by 2d echocardiogram, cardiac catheterization, nuclear scan, mri. Hope it help. ...Read more
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