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Cardiovascular Health

Cardiovascular means anything of, relating to, or involving the heart and the blood vessels (arteries and veins) A healthy heart and circulatory system is vital to life. Ask questions here about how to keep the cardiovascular system pumping.

6,671 Questions

What are the three pathways of circulation?

Systemic circulation is the portion of the cardiovascular system which carries oxygenated blood away from the heart, to the body, and returns deoxygenated blood back to the heart.

Arteries always take blood away from the heart, regardless of their oxygenation, and veins always bring blood back. In general, arteries bring oxygenated blood to the tissues; veins bring deoxygenated blood back to the heart. In the case of the pulmonary vessels, however, the oxygenation is reversed: the pulmonary artery takes deoxygenated blood from the heart to the lungs, and oxygenated blood is pumped back through the pulmonary vein to the heart. As blood circulates through the body, oxygen and nutrients diffuse from the blood into cells surrounding the capillaries, and carbon dioxide diffuses into the blood from the capillary cells.

The release of oxygen from red blood cells or erythrocytes is regulated in mammals. It increases with an increase of carbon dioxide in tissues, an increase in temperature, or a decrease in pH. Such characteristics are exhibited by tissues undergoing high metabolism, as they require increased levels of oxygen.

Pulmonary circulation is the portion of the cardiovascular system which carries oxygen-depleted blood away from the heart, to the lungs, and returns oxygenated blood back to the heart.

De-oxygenated blood enters the right atrium of the heart and flows into the right ventricle where it is pumped through the pulmonary arteries to the lungs. Pulmonary veins return the now oxygen-rich blood to the heart, where it enters the left atrium before flowing into the left ventricle. From the left ventricle the oxygen-rich blood is pumped out via the aorta, and on to the rest of the body.

The Coronary circulatory system provides a blood supply to the heart.

What is Flutter and fibrillation and heart block?

3 different heart rhythms... though flutter and fibrillation when talking about the atria are very very similar... many different kins of heart block... if its 3rd its time to goto the hospital and get a pacemaker. even some of the higher type II's

What is white coat syndrome in relation to blood pressure?

White coat (office) hypertension

a stress-induced syndrome found in patients who have elevated blood pressure when being examined by health-care personnel, but otherwise have normal blood pressure.

What is the principle of epikia?

(philosophy)(theology) The principle in ethics that a law can be broken to achieve a greater good. http://en.wiktionary.org/wiki/epikeia

Why do athletes have a higher cardiac output?

regular aerobic exercise strengthens heart muscles which increases stroke volume (the volume of blood ejected with each contraction). since cardiac output = stroke volume * heart rate, this ultimately increases cardiac output.

What are the ECG characteristics of Atrial flutter?

1- Inverted P waves (F waves) in II, III and AVF.

2- saw-tooth pattern between QRS complexes in II,III and AVF.

3- Atrial rate is 250-400 and regular but ventricular rate depends on AV node and between 60-150 and typically regular.

4- QRS is not wide

5- T waves not identifiable.

What regulates the flow of blood through the heart?

Once blood enters the heart it's flow is regulated by the bicuspid and tricuspid valve which connects the atriums to the ventricles.

Why is good cardiovascular levels important in netball?

a netball injury can take great effect on your cardiorespiratory system because if your injured how are you going to do the workouts that you need to get your cardiorespiratory system up

What is myocardial contractility?

Cardiac contractility is the force of contraction possible for any given length of the cardiac muscle. It is related to the intracellular calcium levels.

What happens when summation occurs in cardiac muscle?

Basic muscle summation -an increase in the frequency with which a muscle is stimulated increases the strength of contraction. With increased stimuli to the heart if summation occurred the contractions would keep increasing.

Why cant you exercise after a tattoo?

Exercise may lead to sweating. This can cause the ink to run, if it has not had enough time to properly set.

A condition of clot formation is called?

Symptoms include: pain, swelling, paralysis, weakness, or loss of sensation.

Can heart palpitations be fatal?

No, not most of the time anyway. Heart palpitations are irregular rhythms of the heart which are usually 160-220 bpm. But they can lead to more serious conditions if left too long or mixed with underlying heart problems/disease.

For example, I had a palpitation for 17 hours, was shocked 3 times and it didn't work so I started to go into heart failure. If the 4th shock hadn't of worked, I would have went into heart failure. As we know, heart failure is curable and especially with me being an active teenager. But for older people this can be fatal, leading to cardiac arrest.

But once again, only if left too long.

If you shoot yourself in the heart does it hurt?

There is no way to find out how a shooting in the heart feels, considering anyone who has experienced such has probably died. If they have lived, I imagine that it was painful.

What are lung crepitations?

the popping or the crackling sound of the lungs that is heart during inspiration or expiration(more common) while listening through a stethescope.these crepitations can either be coarse or fine.

coarse crepitations are usually seen due to fluid in the lungs whereas fine crepitations are due to fibrosis,mainly.

How long does it take to lower your cholesterol levels on a vegetarian diet?

So far I've been at it about four months with only small decrease (about 5 points still 236) I will keep at it and try to get back here if I don't die first :)

Deficiencies of what could cause abnormally slow blood clotting time?

Slow clotting time means that bleeding takes a longer time to stop. It could be caused by

- platelet deficiency or,

- insufficient/missing clotting factors

- anticoagulant therapy

Platelets (normally) are tiny disc-shaped fragments of a big cell (megakaryocyte). They form a temporary plug over the injury site. They also release certain chemicals which help with coagulation if the plug is not enough to stop the bleeding.

The condition, in what the absolute platelet numbers are less than sufficient, is called Thrombocytopenia. That could be the result of either the

- bone marrow does not make enough platelets (leukaemia, radiotherapy), or

- the platelets are destructed faster than the bone marrow makes them (immune disorders, drug therapy).

It also could the caused by

- viral infections,

- Disseminated intravascular coagulation disease

- Vitamin B12/folic acid deficiency

- menstruation.

Clotting factors are chemicals made mostly by the liver and some by the platelets.

The clotting factors are either twelve or thirteen in numbers, (depending on how number V, Proaccelerin, and number VI, Accerelin is included in the count), include four factors that the liver can only make if there is enough Vitamin K in the body.

Therefore, Vitamin K deficiency could also be one reason.

Certain bleeding disorders can interfere with clotting. They might be caused by:

- liver or renal disease, and again,

- Vitamin K deficiency,

- autoimmune diseases (Acquired Haemophilia, Acquired von Willebrand disease)

- Genetic disorders (where certain clotting factors are not made: Von Willebrand disease, Haemophilia A, and Haemophilia B, the Christmas disease)

Anticoagulant therapy

- Warfarin

- Heparin

- Aspirin

also do prolong the clotting time.

You have chest pain and the feeling of burping what is it?

This might be the early signs of a cardiac problem. Consult a professional now

How long does cardiovascular disease last?

til death unless you prevent it by going to the hospital and getting checked or you can prevent it by eating right or even exercising more.....!!!!

good luck??!!!

Who invented Nicotine?

Nicotine was not invented. It is a naturally occurring chemical. Nicotine was first isolated from the tobacco plant in 1828 by chemists Posselt & Reimann; its chemical formula was described by Melsens in 1843, its structure was discovered by Garry Pinner in 1893, and it was first synthesized by A. Pictet and Crepieux in 1904.

Nicotine was first found in tobacco leaves. It is also found in several other nightshade family plants, but in microscopic quantities. These plants include tomato, green pepper, potato and eggplant.