Doctor insights on:
What Happens When The Pericardium Of The Heart Is Removed
V-fib???: V-fib that lasts more than a few seconds is typically lethal and results in sudden death. Atrial fibrillation (a-fib) is a different thing entirely, which is a common heart rhythm abnormality. Some people live in constant afib, some people their afib is come-and-go. If it is afib you are referring to, it is commonly managed with a combination of medications and procedures. ...Read more
Lungs: Normally the lungs do not receive blood from the left atrium. Blood travels from the right atrium to the right ventricle to the lungs and then comes back from the lungs to the left atrium to the left ventricle and is then pumped out through the aorta to the rest of the body. ...Read more
See below: Absence of blood circulating to the brain. ...Read more
The sinus node: The sinus node is a group of specialized pacemaker cells that is located in the upper right atrium. These cells react to circulating chemicals, such as adrenaline, and there are nerve connections from the brain that modify the heart rate in response to the body's needs. ...Read moreSee 1 more doctor answer
Aortic valve: If there isn't a valve to keep the blood from sloshing back into the left ventricle when the left ventricle relaxes, the systemic blood flow will be compromised and the left ventricle will be volume overloaded. This is what happens with severe major aortic valve insufficiency. ...Read more
Pericardial effusion: There is no particular area as almost all effusions affect the heart function. However, that being said the worst would be any restriction on ventricular function. ...Read more
Many : The pericardium isolates the heart from surrounding organs, prevents the heart from over expanding when blood volume increases, limits heart motion, and keeps a small amount of fluid around the heart that severs as a lubricant which reduces friction with surrounding tissue as the heart beats. ...Read moreSee 1 more doctor answer
1.2 max: As measured at the very end of diastole it's 0.6 to 1.2 cm. ...Read more
Just out of interest, which ventricle chamber (the left or right) Is supposed to be the biggest in the heart(not the muscle)?
Anatomy: The volumes of the ventricles are the same if all is normal. The mass of the left ventricle is normally more than the right. The shapes of the ventricles are different. ...Read more
Is a v fib, where the bottom of the heat flutters and the blood does not go to the rest of the body, considered a heart attack?
No: Ventricular fibrillation is a type of arrhythmia (abnormal heart rhythm) that can result from a heart attack. A heart attack implies a blockage of one of the coronary arteries resulting in lack of blood supply (and oxygen) to a portion of the heart. However, ventricular fibrillation has many other potential causes. ...Read moreSee 2 more doctor answers
Please explain why is it that the blood pressure cuff normally is wrapped around the arm at the same level as the heart?
Is the hearts output in one beat the only thing that makes the BP what it is or could the pressure on the arteries be effected by something else?
More Information: Your question is interesting when I see that you have had a number of "sophisticated" cardiac tests. Yes one heartbeat initiates circulation at a given pressure but a lot of disorders affect the VESSELS which require the heart to beat at a higher pressure. Hope this helps! Dr Z ...Read more
Survival: All transplants are for end stage disease, not amenable to other therapies- or failing those. The immunosupression was an amazing advance as well as matching for best survival. The surgical, techniques are relatively straightforward compared to, some other heart operations. ...Read moreSee 1 more doctor answer
Could you tell me what is the percentage of oxygen returned to the heart after it leaves the lungs?
What happens when henle is shortened, to the extent that they could not reach the medullary region of the kidney?
Question unclear: Loop of henle is part of an individual nephron (1 immion/kidney) & situated between glomerulus (mini filter) in kidney cortex & collecting duct in kidney medulla. Nephron cells would form into a cyst if obstructed or perhaps as u say "could not reach medullary region". ...Read more
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