Age-related changes in the heart and blood vessels
The Aging Of The Human Body / / April 28, 2016
aging of the human body
Some changes in the heart and blood vessels, usually occurs with age, however, take place, and many other changes that are common, caused by age-factors that can lead to heart disease if theirleft untreated.
The heart has two sides - the atrium.The right atrium pumps blood to the lungs to receive oxygen and get rid of carbon dioxide.The left atrium delivers oxygen-rich blood to the body.
blood flows from the heart through the arteries, which branch out and get smaller and smaller as they go into the tissues.In the tissues, they become tiny capillaries.
Capillaries are where the blood gives oxygen and nutrients to the tissues, and receives carbon dioxide and waste products from the tissues back.Then the vessels begin to come together in large veins that return blood to the heart.
Age-related changes in the heart
The heart has a natural pacemaker system that controls the heartbeat.In some way this system can develop fibrous tissue and fat (cholesterol).The heart m
These changes can slow down the heart rate.
slight increase in the size of the heart, especially the left ventricle, is not uncommon.heart wall thickens, so the amount of blood which may contain camera can actually be reduced despite the increase in the overall size of the heart.The heart may fill with blood more slowly.
Heart changes cause, as a rule, changes in the ECG.Cardiogram normal, healthy older people will be a little different from the ECG of healthy young adults.Anomalies rhythms (arrhythmias) such as atrial fibrillation are more common in older people.They can be caused by heart disease.
Normal changes in the heart and related to the accumulation in it "aging pigment," lipofuscin.Cardiac muscle cells degenerate slightly.The valves inside the heart that control the direction of blood flow, thicken and become stiffer.Heart murmurs are caused by valve stiffness often in the elderly.
Age-related changes in blood vessels
receptors called baroreceptors, control blood pressure and make changes that help the body maintain nearly constant blood pressure when a person has changed position or the pace of activity.Baroreceptors become less sensitive to aging.This may explain why many older people suffer orthostatic hypotension, a condition in which blood pressure drops when a person moves from a lying or sitting position to a standing position.This results in dizziness because reduced blood flow to the brain.
capillary walls thicken slightly.This can lead to some slower rate of metabolism and waste.
main heart artery (aorta) becomes thicker, stiffer and less flexible.This is probably due to changes in the connective tissue of the blood vessel walls.This increases blood pressure and causes the heart to work harder, which can lead to thickening of the heart muscle (hypertrophy).Other arteries also thicken and become stiffer.In general, the majority of older people experience a moderate increase in blood pressure.
Age-related changes in blood
blood itself changes slightly with age.Normal aging causes a decrease in total body water.Under this reduced fluid involved in the circulation, so the blood volume decreases somewhat.
number of red blood cells (and, therefore, hemoglobin, and hematocrit) are reduced.This contributes to fatigue.Most white blood cells remain at the same level, even though some white blood cells responsible for immunity (lymphocytes), reduced in quantity, and reducing the ability to fight bacteria.This reduces the body's ability to resist infection.
Influence of age-related changes
Under normal circumstances, the heart continues to supply enough blood to all parts of the body.However, several heart aging can impair the ability to transfer high loads, since due to age-related changes decreased the possibility of additional pumping blood to the heart, so the backup function of the heart become lower.
Some factors that may increase the burden on the heart:
- Some medications
- Emotional stress
- Extreme physical
Disease - Infections
Angina pectoris (chest pain caused by a temporary decrease in blood flow to the heartmuscle), shortness of breath with exertion, and heart attacks may lead to coronary heart disease.
may be different types of abnormal heart rhythms (arrhythmias).
Anemia is also possible, this is due to malnutrition, chronic infections, blood loss from the gastrointestinal tract, or other complications of disease or side effects of different drugs.
Atherosclerosis (hardening of the arteries) is very common.Fat deposits (cholesterol plaques) inside the blood vessels causing narrowing them and can completely block the blood vessels.
Heart failure is also very common among the elderly.In people older than 75 years, congestive heart failure occurs 10 times more often than in younger adults.
Coronary heart disease is relatively common, often as a result of atherosclerosis.
heart disease and blood vessel as is quite common in the elderly.Common disorders include high blood pressure and orthostatic hypotension.
Diseases of the heart valves are fairly common.Aortic stenosis, or narrowing of the aortic valve is the most common valve disease in the elderly.
Transient ischemic attack (TIA) or stroke can happen if blood flow to the brain is disrupted.
Other problems with the heart and blood vessels, include the following:
- Blood clots
- Deep vein thrombosis
- Peripheral vascular disease, as a result of intermittent pain in the legs when walking (claudication)
- Varicose veins
Prevention of age-related changes in the cardiovascular system
you can help your circulatory system (heart and blood vessels).Cardiovascular diseases are risk factors that you have to control and try to reduce:
- high blood pressure,
Eat healthy food for the heart with reduced saturated fat and cholesterol, and control your weight.Follow your doctor's recommendations for treatment of high blood pressure, high cholesterol or diabetes.Reduce tobacco consumption, or even quit.
Exercise may help prevent obesity, and it helps people with diabetes control their blood sugar.Exercise can help you keep your skills as much as possible and reduce stress.
the need for regular check-ups and examinations of your heart:
- Check your blood pressure.If you have diabetes, heart disease, kidney or other medical conditions, your blood pressure should be checked more closely.
- If your cholesterol level is normal, you should double-check it every 5 years or more.If you have diabetes, heart disease, kidney or other diseases, cholesterol levels should be checked more closely.
- Moderate exercise is one of the best things you can do to your heart and the rest of the body as a possible stay healthy longer.Consult with your doctor before starting a new exercise program.
- Exercise moderately and perform within their capabilities, but do it regularly.
- People who consume less fat and smoke less, as a rule, tend to have fewer problems with blood pressure and less heart disease than smoking lovers of fatty foods.
19 May, 2016
19 May, 2016