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Doctor insights on: Human Heart Function Animation

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Non sustained VT<30sec more concern in patients with Left Ventricular Impaired function compared to Normal LV function normal heart ejection fraction?

Non sustained VT<30sec more concern in patients with Left Ventricular Impaired function compared to Normal LV function normal heart ejection fraction?

Yes, but concern: NS Ventricular tachycardia has a higher degree of concern in patients with impaired ejection fraction. However, the larger concern is that having runs of nonsustained VT are not particularly common in the normal population, so even in patients with normal EF, would still be concerned about ischemic heart disease in patients who are having runs of NS VT. ...Read more

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Define respiration seen in human beings?

Define respiration seen in human beings?

Breathing: Respiration usually just means breathing. There is another more technical meaning when describing the biochemical processess within your body - "cellular respiration" is the process of combining oxygen inside your cells, in the mitochondria, where your cells create the chemical energy that drives your body. ...Read more

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What area of the brain has the greatest effect on visceral functions (e.g. heart rate and hormone production)?

What area of the brain has the greatest effect on visceral functions (e.g. heart rate and hormone production)?

Hormones: Please go online to Yahoo Images or something similar and look for images of the Pituitary Gland. There is usually a small comment with the images. Fell free to contact me again if there are things on the web you don't fully understand. You can of course also discuss these items with your doctor. ...Read more

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Does The Amount of HGH Human Growth Hormone correlate a Person Jaw Size and Cranial Capacity?

To a limited: extent. After puberty, growth hormone secreting tumors can lead to changes in jaw and head dimensions. This is called acromegaly. Why do you ask? Hopefully you're not taking growth hormone without a medical reason, as this is stupid and dangerous. ...Read more

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Why are pig heart valves suitable as replacements for damaged heart valves in humans?

Why are pig heart valves suitable as replacements for damaged heart valves in humans?

Tissue valves: The size of pig and cow valves approximates the size of human valves. They are chemically treated to decrease the likelihood of tissue rejection. The porcine valves are more commonly used than the bovine. ...Read more

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How does heart failure affect the kidneys relating to anatomy and physiology?

How does heart failure affect the kidneys relating to anatomy and physiology?

HF and kidney: In advanced heart failure the blood flow to the kidneys decrease and then this will lead to less blood perfusion and kidneys get affected. ...Read more

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Can adrenal hypo function affect the heart rate?

Can adrenal hypo function affect the heart rate?

Yes: Symptoms of adrenal insufficiency include hypoglycemia, dehydration, weight loss, and disorientation. Symptoms may also include weakness, tiredness, dizziness, low blood pressure that falls further when standing (orthostatic hypotension), cardiovascular collapse (failure), muscle aches, nausea, vomiting, diarrhea, etc... Heart rate can increase if there is dehydration or low blood pressure. ...Read more

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What is the normal function of human growth hormone?

What is the normal function of human growth hormone?

HGH: Read Wikipedia: Too many effects in the body. Read a comprehensive article here http://en.Wikipedia.Org/wiki/growth_hormone#gh_in_human_medicine. Review my previous answers about it. ...Read more

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Dr. Joseph Oh Dr. Oh
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How are static & dynamic lung compliance measured in children?

Dr. Joseph Oh Dr. Oh
3 doctors agreed:
How are static & dynamic lung compliance measured in children?

Spirometry: Compliance and many other aspects of lung function can be measured in children with PFTs (pulmonary function tests) using a spirometer. The child has to be old enough to follow directions. You will find this piece of equipment in a pediatric pulmunology or allergy/immunology office. Why do you ask? ...Read more

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How does electrical stimulation of the heart coordinate the overall cardiac cycle?

How does electrical stimulation of the heart coordinate the overall cardiac cycle?

Millisecond timing: The 2 atria act as reservoirs for returning blood; the 2 ventricles are the "pumpers". The 4 chambers must be coordinated with millisecond timing to maximize the amount of blood pumped (cardiac output). This is done by a network of specialized cells which are found in tracts or bundles that conduct a micro-electrical current to time motion. A gross analogy: think of the distributor in your car. ...Read more

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Why is it that the human body does not reject bovine or pig heart valves. Can cells from different animals survive in humans?

Why is it that the human body does not reject bovine or pig heart valves.  Can cells from different animals survive in humans?

Medical technology: The valves are derived from pig or bovine but are treated in a laboratory to remove the antigens that would cause a reaction against them in a human body. Medical technology is amazing! ...Read more

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BP 117/72, LBBB, slight elevated EDP 20,EF 50-55, heart function fine. Arteries large, clear. Exercise limited at times.Diseased or dysfunction?cure?

BP 117/72, LBBB, slight elevated EDP 20,EF 50-55, heart function fine.  Arteries large, clear. Exercise limited at times.Diseased or dysfunction?cure?

Diastolic: It sounds like you have diastolic dysfunction. You should discuss with your cardiolologist to get an explanation of what is possible in diagnosis and therapy. ...Read more

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What is the physiology that explains how a high heart rate influences coronary artery perfusion and myocardial oxygen delivery?

What is the physiology that explains how a high heart rate influences coronary artery perfusion and myocardial oxygen delivery?

Circular question: By itself, a high heart rate will result in higher oxygen demand and utilization, but delivery should also increase to compensate. So everything should balance if the heart is healthy. If the heart isn't healthy to begin with a high heart rate is not desirable. ...Read more